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Questions and Answers
An exosphere is the layer of Earth's atmosphere where weather occurs.
An exosphere is the layer of Earth's atmosphere where weather occurs.
False
Valence electrons are located in the innermost shell of an atom.
Valence electrons are located in the innermost shell of an atom.
False
Metals are elements that tend to gain electrons.
Metals are elements that tend to gain electrons.
False
Ionic compounds are usually formed by covalent bonds.
Ionic compounds are usually formed by covalent bonds.
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The ozone layer is located in the mesosphere.
The ozone layer is located in the mesosphere.
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A physical change involves a change in chemical composition.
A physical change involves a change in chemical composition.
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Sound waves can travel through a vacuum.
Sound waves can travel through a vacuum.
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An atom with a net electric charge is called an ion.
An atom with a net electric charge is called an ion.
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An object in motion will always come to rest if no force is acting on it.
An object in motion will always come to rest if no force is acting on it.
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The formula for calculating work is force times acceleration.
The formula for calculating work is force times acceleration.
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Linear momentum is the product of an object's mass and its acceleration.
Linear momentum is the product of an object's mass and its acceleration.
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Elastic collisions conserve total energy while inelastic collisions do not.
Elastic collisions conserve total energy while inelastic collisions do not.
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Gravitational potential energy increases with height above the ground but not with mass.
Gravitational potential energy increases with height above the ground but not with mass.
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Mechanical waves can travel through a vacuum.
Mechanical waves can travel through a vacuum.
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Transverse waves are waves where the oscillation occurs along the direction the wave is traveling.
Transverse waves are waves where the oscillation occurs along the direction the wave is traveling.
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Electromagnetic waves only have a magnetic component, not an electric one.
Electromagnetic waves only have a magnetic component, not an electric one.
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A nebula is a collection of hundreds of billions of stars clustered together by gravity.
A nebula is a collection of hundreds of billions of stars clustered together by gravity.
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Rocks formed through heat and pressure are called igneous rocks.
Rocks formed through heat and pressure are called igneous rocks.
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The outer core of the Earth is made of mostly solid nickel-iron.
The outer core of the Earth is made of mostly solid nickel-iron.
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The Paleozoic era is known for being the age of mammals.
The Paleozoic era is known for being the age of mammals.
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In the rock cycle, rocks change from one form to another through a set of physical processes.
In the rock cycle, rocks change from one form to another through a set of physical processes.
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The main process responsible for the transportation or removal of material is weathering.
The main process responsible for the transportation or removal of material is weathering.
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The Cenozoic era is also known as the Mesozoic era.
The Cenozoic era is also known as the Mesozoic era.
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Chemical weathering results from mechanical processes.
Chemical weathering results from mechanical processes.
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Acceleration is only related to changes in an object's speed.
Acceleration is only related to changes in an object's speed.
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An inverse relationship between two variables means that increasing one variable leads to an increase in the other variable as well.
An inverse relationship between two variables means that increasing one variable leads to an increase in the other variable as well.
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Conceptual models are used to visualize physical phenomena that can be directly observed.
Conceptual models are used to visualize physical phenomena that can be directly observed.
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A theory in science is a concise statement supported only by scientific evidence.
A theory in science is a concise statement supported only by scientific evidence.
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A computer model is a simple model that does not require calculations.
A computer model is a simple model that does not require calculations.
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The principle of falsification states that all statements in science must be proven true.
The principle of falsification states that all statements in science must be proven true.
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The meter is the base unit of mass.
The meter is the base unit of mass.
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Speed is measured as the amount of space an object occupies per unit time.
Speed is measured as the amount of space an object occupies per unit time.
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An unconformity A is an exposed erosional surface, revealing information about the relative ages of rocks.
An unconformity A is an exposed erosional surface, revealing information about the relative ages of rocks.
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At a transform boundary, tectonic plates are moving apart, leading to volcanic activity but no earthquakes.
At a transform boundary, tectonic plates are moving apart, leading to volcanic activity but no earthquakes.
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Oceanic to continental boundaries result in the formation of volcanic island chains.
Oceanic to continental boundaries result in the formation of volcanic island chains.
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The stratosphere is the layer of Earth's atmosphere that contains the ozone layer.
The stratosphere is the layer of Earth's atmosphere that contains the ozone layer.
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Convection is the transfer of thermal energy through a solid material.
Convection is the transfer of thermal energy through a solid material.
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Transpiration is the evaporation of water from the soil.
Transpiration is the evaporation of water from the soil.
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Groundwater refers to water that is flowing on the ground surface.
Groundwater refers to water that is flowing on the ground surface.
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High-pressure systems (anticyclones) tend to develop in warm areas and create cloudy weather.
High-pressure systems (anticyclones) tend to develop in warm areas and create cloudy weather.
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