Pre-IB Grade 9 Science Practice Exam

These questions are part of the practice quiz. Start practicing

• Which statement correctly defines scientific notation?
• Which process removes carbon dioxide from the atmosphere and stores carbon in biomass?
• One astronomical unit is approximately how many kilometers?
• Which scientist proposed the nuclear model of the atom after the gold foil experiment, discovering the atomic nucleus?
• Who formulated atomic theory and the law of partial pressures?
• Which term describes a substance made of one type of particle?
• If a population reaches carrying capacity, what happens to its growth?
• Which planet is the sixth planet from the Sun?
• In a series circuit, what is true about the current through the components?
• If you double the amount of matter, which property would double?
• Which planet is the eighth planet from the Sun?
• In hydroelectric systems, why is water often raised to a higher elevation before release?
• Which property describes the ability to be shaped without being damaged?
• Which term best describes organisms that break down dead matter and waste, returning nutrients to the environment?
• Which term describes a heterogeneous mixture whose components are visibly distinct?
• In a food chain, arrows indicate what aspect of energy transfer?
• How many kilometers is 1 AU?
• Conservation of biodiversity refers to?
• Ductility is best defined as which property?
• What term describes the unique role and position of an organism within its community, determined by its behavior, diet, and interactions?
• Which element has the symbol Si and is widely used in computer chips?
• Which feature describes a buried river under GCVI that is connected to storm sewers?
• Electrical discharge is characterized by:
• Which term describes a condition where current flow is stopped, rather than a device that stops current?
• What best defines an ecosystem?
• Which term uses chemical paste instead of a liquid electrolyte and cannot be recharged?
• What term refers to a living form with interacting organs?
• Which is an example of an extensive property?
• The Hydrosphere includes...
• Extirpation refers to a species that is ...
• What is the name of the element with the symbol Na?
• Which statement best describes rehabilitation?
• Quantitative observation is defined as measurement with tools, more precise.
• Which statement about ionic compounds is correct regarding melting points and conductivity when dissolved or molten?
• Which element has the symbol O?
• Which symbol represents Hydrogen?
• Which term best describes celestial bodies that orbit a star and have enough gravity to clear most other objects from their orbital path?
• Which term describes something that has a uniform structure throughout?
• Which statement best captures why we explore space?
• In a series circuit, how is the source voltage Vs related to the voltages across components?
• What is the term for the sequence of organisms where each feeds on the previous?
• Ductility describes which property?
• The electrostatic series helps predict what property of materials in relation to electricity?
• Decomposers break down the dead remains of other organisms and release it back into the environment.
• Which symbol represents Argon?
• Which term means anything with mass and volume?
• Which term means an organism breaking down dead matter to recycle nutrients in ecosystems?
• Which subatomic particle has a negative charge and orbits the nucleus?
• What is a Light Year?
• Which term describes a mixture that forms when one or more substances dissolve in another and is homogeneous?
• How long does light take to travel 1 AU?
• Mass is best described as what?
• Which element has the symbol Ar?
• What are the reactants of photosynthesis?
• Which is not an example of an extensive property?
• In a steam-cycle power plant, what is the role of circulating water after steam passes through the turbine?
• Electric charge is defined as:
• Which statement best differentiates ionic and molecular compounds?
• Which change describes a change in appearance without producing a new substance?
• Which of the following are products of cellular respiration?
• Which space vehicle is designed to transport people and equipment to orbit and return to Earth?
• Which term describes something capable of catching fire or burning?
• Which term describes a pure substance made of only one kind of atom?
• What is the role of predators in an ecosystem?
• What term describes a graphic depiction of feeding relationships within an ecosystem?
• Omnivores are:
• Which statement explains how nutrients differ from matter?
• What is an Astronomical Unit (AU)?
• Which property describes the ability of a material to be bent or hammered into a shape?
• Which term describes a visually distinguishable mixture of different substances?
• A homogeneous mixture has a uniform composition, with particles not visible individually.
• Which term describes a substance that is a shiny solid and conducts electricity well?
• Which property is strongly associated with measuring how much matter is present?
• Most molecular compounds in solid form tend to do what with electricity?
• What is the volume of a cube with side length 2 cm?
• Which term describes a substance that may explode, ignite, or burn and may give off poisonous fumes or cause serious burns?
• What does biomass mean?
• Which statement defines current?
• If a sample has a mass of 200 g and a volume of 100 cm^3, what is its density?
• What is an aquifer?
• Which planet has no atmosphere and a crust blasted off the surface?
• Which term describes materials that are usually non-metals where electrons move through the material at a lesser degree than conductors, including crystalline compounds such as silicon carbide?
• Which term refers to the family of metallic elements in group 2 that are harder and less reactive than group 1?
• Solubility is best defined as the ability of a substance to dissolve in a solvent.
• Which of the following is a physical change?
• Starlight observation allows the study of which of the following?
• Which property depends on the amount of matter?
• Which planet is the third from the Sun?
• What is a limiting nutrient?
• Which property increases with more matter when the substance is unchanged?
• What statement best describes a short circuit?
• Lightning formation involves which of the following processes?
• Which term refers to a rechargeable energy storage device that can be recharged multiple times when current from another source is passed in the opposite direction?
• Which property remains constant for a given substance regardless of sample size?
• Which element has the symbol Si?
• An underground water reservoir is called what?
• Which group consists of organisms that eat both producers and other consumers?
• Which subatomic particle has a negative charge?
• Which term describes organisms that obtain energy by feeding on other living things?
• Which symbol represents Beryllium?
• Which term is composed of molecules?
• Which statement best defines an invasive species?
• What are the products of photosynthesis?
• A mixture is a substance made of more than one type of particle.
• What is a rocket?
• Which symbol corresponds to Argon?
• What is electrical efficiency expressed as?
• Which bond type typically links nonmetal atoms in molecular compounds?
• Which planet is the fifth planet from the Sun?
• The Sun is the ultimate source of energy for all living things.
• Which description best explains an ecosystem?
• Which term describes chemically bonded elements in fixed proportions?
• Organic nutrients contain what atoms?
• Which term describes the accumulation and transfer of substances through food webs?
• Which symbol represents Lithium?
• What is the unit for measuring electric current?
• What is induction in electricity?
• In parallel circuits, how does current flow?
• Which of the following is the basic unit of matter?
• Which of the following is a clue of a chemical change other than color change?
• What term describes the physical form of a substance (gas, solid, or liquid)?
• Which of the following describes ionic properties of compounds?
• Energy levels are defined as
• Which term refers to chemically bonded elements in fixed proportions?
• Which symbol corresponds to Potassium?
• Which planet is described as having the biggest atmosphere among terrestrial planets?
• Which term describes a shiny solid at room temperature that conducts heat and electricity?
• What term is defined as the number indicating how many electrons are lost or gained to form an ion?
• In a series circuit, how many paths does the current have to travel?
• Which term can be recharged multiple times? Recharging happens when electric current from another source is passed in opposite direction.
• Which factors are essential for most organisms to survive?
• What term means the knowledge we have about the world through observation?
• In a series circuit, how is the total resistance Rs computed?
• Which statement best describes fragmentation of habitat?
• Which term describes an element with properties that fall between those of metals and nonmetals?
• Ecological studies are influenced by two main types of factors. Which pair is correct?
• Food chains show what in ecosystems?
• In a parallel circuit, how is the equivalent resistance Rs determined?
• Which statement about meteoroids is accurate?
• Which option is NOT one of the factors affecting resistance?
• The Atmosphere is...
• What is the speed of light in kilometers per second?
• The term for energy consumed when devices are turned off, commonly referred to as standby power, is called what?
• Which term describes a cloudy mixture with visible suspended particles?
• How does hydroelectric energy generate electricity?
• Biodiversity hotspots are defined as?
• Which of the following is a product of photosynthesis?
• Which property is commonly used to describe an extensive property?
• Which term describes a substance made of more than one kind of particle in which the particles are not uniformly scattered and are visible?
• Which statement best defines gravity?
• Herbivores are:
• Which term best describes the transfer of energy through a community as organisms feed on one another, piece by piece?
• Which term describes an animal that eats fresh plants predominantly?
• Which statement best describes noble gases?
• Predators are:
• Which are the products of cellular respiration?
• What does the biosphere refer to?
• Which term refers to spacecraft that transport personnel and equipment to an orbiting spacecraft?
• What term describes a pure substance formed when two or more elements chemically combine?
• Chadwick's discovery involved bombarding atoms with helium nuclei (alpha particles). Which option describes this experiment?
• Which symbol represents Beryllium?
• What term describes a group of atoms bonded together?
• Which object travels around another object in space?
• Which term describes a sequence of organisms in which each member is eaten by the next member?
• During summer, why are days longer and temperatures warmer in that hemisphere?
• Transpiration is the evaporation of water from the leaves of a plant.
• Which element has the symbol Mg?
• Which statement about energy sources is true?
• Which term describes a property that can be measured and has a numerical value, such as temperature and mass?
• What is a meteoroid?
• What is conductivity?
• What describes a galaxy?
• Which factor is biotic?
• Which term describes matter that is a single type of substance with fixed properties and composition?
• Which term describes the physical form of matter?
• Lustre refers to which property?
• Pollution is defined as?
• Which of the following are products of photosynthesis?
• Which statement best describes the Astronomical Unit?
• Which factor does not contribute to seasonal changes?
• What term describes a substance with uniform composition throughout?
• Which planet is the closest to the Sun?
• Which element is commonly used to make beverage cans?
• Which term describes all water on the Earth and near its surface?
• Which planet is the fourth planet from the Sun?
• Which scientist used the cathode ray tube to discover electrons and proposed the plum pudding model of the atom?
• Which element has the symbol B?
• What describes a skeletal chemical equation?
• Which definition best describes ecology?
• Which trend describes halogen reactivity within the group?
• What is the name of the family of metallic elements in group 2 that are harder and less reactive than group 1 elements?
• How many kilometers is one light-year?
• Which term describes distance light travels in one year?
• Which element has the symbol Ne?
• Which term best describes the space facility designed to support long-term human habitation and research in orbit?
• In the GUESS problem-solving method, what does the 'U' stand for?
• Which symbol represents Phosphorus?
• In a parallel circuit, what is the relationship of Vs across components?
• Which term describes a combination of symbols and numbers representing the amount and type of elements that form a particular compound?
• Which property is an intensive property and can be described using colour?
• Which term refers to materials that do not allow electricity to pass through easily?
• Which term describes the ability of a substance to dissolve in a solvent?
• What causes tides on Earth?
• Which term describes any device that stops the flow of electrons?
• Current electricity is defined as the flow of electric charge per second, measured in what unit?
• Which form of carbon is released into the atmosphere?
• Indicator Species are organisms that signal changes in ecosystem health by...
• Which term is described as a source of energy that is replaced in a relatively short time period?
• Which statement best describes halogens?
• Which term describes a mixture that is not uniform throughout?
• Which term describes the initial path of ionized air that travels toward the ground to start a lightning discharge?
• Bioaccumulation is defined as what?
• Which of the following is a statement about carbon sinks?
• Which element has the smallest atomic number among the listed elements?
• Which term refers to the region of space from which nothing can escape due to gravity?
• Which symbol represents Potassium?
• What is the term for the number indicating how many electrons an element has lost or gained to form an ion?
• What does combustion release into the atmosphere?
• What term refers to the environment where a species lives?
• Approximately how much energy is passed from one trophic level to the next?
• Electric fields are best described as:
• How is the Astronomical Unit defined?
• Which of the following expresses the cellular respiration formula in words?
• What term means the unique behavior enabling an organism's survival and reproduction?
• Which term describes a pure substance made of two or more elements chemically combined?
• Detritivores are organisms that eat dead organic matter.
• Odour refers to which characteristic of a substance?
• Which term describes consumers that feed on the remains of dead animals?
• Which unit is commonly used to measure the mass of an object on Earth?
• Which element has the symbol N?
• Which statement best defines viscosity?
• In a parallel circuit, the total current Is is equal to the sum of the branch currents. Which expression shows this?
• Which term refers to an artificial riverbank filled with garbage, potentially leaking toxins?
• Which process uses sunlight to convert water and carbon dioxide into glucose and oxygen?
• What is potential difference measured in?
• A consumer is:
• Which statement describes the concept that electrons move around the nucleus in fixed orbits called electron shells?
• An endangered species is...
• Which term describes a pure substance formed when two or more elements are chemically combined?
• What term describes the building of space between particles of opposite charges?
• What is the center of the atom called?
• Which property would stay the same if you change the amount of matter?
• Qualitative observation is defined as observation without tools, less precise.
• Which process is the evaporation of water from the leaves of a plant?
• Which of the following are products of cellular respiration?
• Which planet is famous for its rings?
• Which feature separates metals from non-metals and metalloids on the periodic table?
• Which subatomic particle has no charge and is located in the nucleus?
• Which term describes a star explosion that briefly becomes extremely luminous?
• What is a battery?
• Which statement correctly identifies a clue of a physical change?
• Which of the following indicates a chemical change?
• Which statement best defines runoff?
• Which term means a visually distinguishable mixture of different substances?
• Which is the correct unit for power?
• Which is not an intensive property?
• Atomic number is defined as which of the following?
• Electrical discharge through air occurs when:
• If an atom has 15 protons and 16 neutrons, what is its mass number?
• Which statement correctly defines an Astronomical Unit (AU)?
• What is the greenhouse effect?
• Which statement describes a Supernova?
• Which term describes the gradual wearing away of a metal due to reactions with oxygen, often accelerated by water (for example rust)?
• According to particle theory, which statement is true about energy, particle speed, and temperature?
• Lustre refers to which property of a substance?
• Which term best completes this definition: a bond formed by positive and negative ions?
• Which term describes a single type of matter with fixed properties and composition?
• What is a Meteor?
• Solubility is defined as the ability of one substance to dissolve in another at a given temperature and pressure.
• Which statement correctly describes power in electrical circuits?
• What is the Hubble Space Telescope best described as?
• Carrying capacity is best defined as:
• What term refers to the horizontal rows in the periodic table?
• Which term describes a mixture formed when substances dissolve in another to form a homogeneous mixture?
• Which process is part of the carbon cycle?
• Which term describes a bond created by positive and negative ions; by a metal and non metal?
• In a series circuit, how is voltage distributed across components?
• Which are the reactants of cellular respiration?
• Which planet is described as blue, green, teal?
• During cellular respiration, which gas is released as a waste product?
• Which term describes elements that are usually dull in appearance, poor conductors of heat and electricity, and can be solids, liquids or gases at room temperature?
• Which of the following describes molecular properties?
• Extirpation means a species is ...
• Which element is a noble gas?
• Which term describes organisms that eat plants and animals?
• What is power?
• Which statement best describes carbon sinks?
• Which statement best describes the general flow in a fossil-fuel power plant?
• Which term describes stopping the flow of electrons?
• Atomic mass is defined as which of the following?
• Which term means capable of destroying or eating away by chemical action, such as a strong acid or base?
• Which statement describes a consumer in an ecosystem?
• What is a likely consequence of a short circuit?
• What is the term for the temperature at which a solid becomes a liquid?
• Which description best fits a comet?
• Which planet is the seventh planet from the Sun?
• Which human activities reduce biodiversity?
• According to Ohm's Law, if voltage is constant and current increases, what happens to resistance?
• Which term describes celestial bodies that orbit a star and have enough gravity to clear most debris from their orbit?
• A molecular compound is
• Which term describes a substance made of more than one type of particle?
• What best defines a short circuit?
• Which element is a halogen?
• Which term describes the environment and conditions a species requires to survive, grow, and reproduce?
• What is evaporation?
• What term describes a group of atoms bonded together?
• Which term describes a combination of two or more substances that are not chemically combined?
• Which of the following is a biotic limiting factor?
• Which factors cause the seasons on Earth?
• What is the name of the 1960s dam managed by GRCA that regulates water levels for recreation?
• Which statement describes an invasive species?
• What happens to objects with the same type of electric charge?
• Which factors influence electrical resistance?
• What describes a space station?
• How do detritivores primarily differ from decomposers?
• For a cube, volume is calculated as which expression?
• Which term is the basic form of matter found on the periodic table?
• How are elements arranged in the periodic table?
• Which term is defined as a concrete barrier across a river that creates a small waterfall and helps aerate the water?
• Which property is not dependent on the amount of matter?
• During decomposition, what happens to carbon?
• Which term describes an organism that eats fresh meat predominantly?
• Which statement is NOT part of Dalton's Atomic Theory?
• Which term refers to a group of stars forming patterns in the night sky?
• An ionic compound is
• What is the chemical symbol for Carbon?
• Chemical energy is defined as:
• Which statement defines electric power most accurately?
• Which term describes a property that does not have a numerical value and is observed, such as colour and odour?
• What are Constellations?
• Which term describes a change in matter that produces one or more new substances?
• What is electron affinity?
• What is a physical property of a substance?
• A binary compound is defined as which of the following?
• What best describes a closed electric circuit?
• Which atomic model describes the atom as having a tiny, dense nucleus surrounded by electrons?
• Which term refers to waste from plants and animals, including dead organisms?
• Which term is defined as a circuit with two or more paths for current, where (-) terminals are connected to each other and (+) terminals are connected to each other?
• Electrical power is defined as:
• Which description correctly defines the Particle Theory of Matter?
• Which term refers to materials that do not allow electricity to pass through easily?
• Which component contains carbon, hydrogen, oxygen and nitrogen atoms and is used by living organisms?
• What is a Meteorite?
• Abiotic limiting factors are nonliving influences on population growth. Which of the following is an abiotic limiting factor?
• Which statement best describes abiotic limiting factors?
• What describes a solar eclipse?
• Which of the following are reactants in photosynthesis?
• Which scientist is credited with discovering the neutron?
• Carnivores are:
• In a chemical reaction, what does the Law of Conservation of Mass state?
• Which element has the symbol F?
• The beam Chadwick observed was not affected by magnets or charged objects. This indicated what about the particles?
• An alloy is
• Which scientist proposed the planetary model, where electrons orbit the nucleus in defined shells?
• What does the Particle Model of Matter describe?
• Which symbol represents Calcium?
• Which subatomic particle has a positive charge and is found in the nucleus?
• Which of the following is a clue of a chemical change?
• Electric charge is best described as:
• Nuclear energy is produced by splitting uranium atoms in a reactor using which substance for control?
• Which of the following is a physical property?
• Which statement best defines energy in relation to power and time, and its unit?
• What happens to the attraction between particles as the distance between them increases?
• What is a greenhouse gas?
• What does a light year measure?
• Energy is ______ as you go through trophic levels?
• Which statement about a closed electric circuit is true?
• Which of the following expresses the photosynthesis formula in words?
• Mass number is defined as which of the following?
• Which symbol represents Helium?
• What is the approximate tilt of Earth's axis?
• Which of the following best describes fossil fuels?
• If you cut the amount of matter in half, which property would halve?
• Which term describes anything with mass and volume?
• What causes tides on Earth?
• In a series circuit, the current Is is the same through all components. Which expression shows this?
• In a nuclear reactor, what is the primary purpose of the cooling water?
• Which term describes the variety of life forms in an ecosystem or area?
• Rust is an example of which process?
• Which of the following is a consequence of global warming?
• Which of the following best describes a feature of the Particle Model of Matter?
• Global warming is generally described as an increase in the earth’s average temperature due to greenhouse gases. Which option correctly reflects this description?
• What does the electrostatic series determine?
• What term refers to the elements found in vertical columns of the periodic table, where elements in the same group share chemical properties?
• Approximately how long does light take to travel from the Sun to Earth?
• Which is a reactant of cellular respiration?
• A carbon sink is defined as...
• Electrical energy is energy produced from which sources?
• Which symbol represents Sulfur?
• Which term describes organisms that make their own food using energy from sunlight?
• Which factor is abiotic?
• Thermal energy is produced by which source in typical power plants?
• Which symbol corresponds to Calcium?
• A substance that is able to destroy metal through chemical action is called what?
• Which property describes the ability to be hammered into sheets?
• Which term describes a pure substance made of only one kind of atom?
• Which symbol represents Chlorine?
• Which statement best defines disruption in an ecological context?
• Respiration as defined here is water vapour evaporating from our breath.
• What term means all populations in an ecosystem?
• What is the function of a switch in a circuit?
• How is the cost of electricity calculated?
• Which term describes a variable composition with different parts visible?
• Which term refers to any type of resistor or device that transforms electrical energy into heat, light, motion, or sound?
• Biodiversity hotspots are typically characterized by...
• What are the units of potential difference?
• Which term describes moving and releasing species back into their native range for recovery?
• Which statement best describes a chemical change?
• What is the name of the family of metallic elements in group 1 that are highly reactive, have low density and melting points, and are soft?
• Which symbol represents Lithium?
• Which process creates static charge on a substance?
• What does the term environment refer to?
• What are products in a chemical reaction?
• Which term describes a change that affects appearance but not the chemical makeup?
• Which description best defines a producer in ecology?
• What are reactants in a chemical reaction?
• Which of the following is a product of cellular respiration?
• Which term refers to energy being consumed when appliances are turned off?
• Which feature refers to former islands that were outlined by large willow trees before river channelization?
• Which term describes a property that involves the ability of a substance to react with other materials to form a new substance?
• What is a satellite?
• What is a Black Hole?
• Which term refers to an explanation or model that is derived from empirical knowledge?
• The Lithosphere is...
• Which term describes an organism that eats a mix of plants and meat?
• Which term describes the struggle between organisms for the same resources?
• Which of the following is an intensive property?
• Which subatomic particle has no charge and is located in the nucleus?
• Valence electrons are defined as
• What is Ohm's Law as given?
• Which term refers to materials that allow electricity to pass through easily?
• What do you call the two-story concrete structure that shows river water levels during floods?
• Which term describes the sequence of organisms where each organism feeds on the one before it in the chain?
• Which type of observation yields numerical data?
• Melting point is defined as the temperature at which a substance changes from solid to liquid.
• Which element has the symbol Al?
• Ductility is the ability to be stretched or pulled into a wire without breaking.
• What are Asteroids?
• Which term describes an energy source that cannot be replaced as quickly as it is used?
• Which term refers to a representation of a chemical reaction in which the reactants and products are written with their chemical formula?
• Which structure is described as a concrete barrier across a river that creates a small waterfall and aids in aeration?
• Which term describes a substance formed by the combination of elements in a definite ratio?
• Electron orbits refer to
• Which term describes an explanation that attempts to account for observations using theory and reasoning, rather than direct experiment?
• Which statement best describes the seasons?
• Which property remains unchanged when the amount of matter changes for a pure substance?
• Which planet is the fifth planet from the Sun?
• Density is defined as which of the following?
• Which term is defined as a circuit with two or more paths for current, where (-) terminals are connected to each other and (+) terminals are connected to each other?
• Producers are defined as:
• What is friction in electricity?
• The process where water vapour evaporates from our breath is called?
• Which term describes a property that can be measured and has a numerical value, such as mass or temperature?
• What does the carbon cycle describe?
• Which term describes the unique adaptations and behaviors that enable an organism to live in its environment?
• Ground in electrical terms refers to:
• Which term refers to materials that are usually non-metals where electrons move through the material but at a lesser degree than conductors, such as crystalline compounds like silicon carbide?
• Which planet is described as an ice giant with an atmosphere of hydrogen, helium and methane?
• Which process contributes to carbon sequestration by storing carbon in sediments?
• Which statement best describes a word equation?
• Reintroduction refers to moving and releasing species back into their native range for recovery.
• In a series circuit, if one device fails open, what happens to the circuit?
• Which statement describes fragmentation of habitat?