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5th Grade Science - Energy

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  • What type of energy is released when a chemical reaction takes place?
    Mechanical energy
    Light energy
    Sound energy
    Chemical energy
  • How is thermal energy, or heat, generated?
    Through the absorption of sound waves
    By the movement of tiny particles within an object
    By the presence of light energy
    By the release of chemical energy
  • How do we get fossil fuels today?
    We drill and mine them from the Earth.
  • What is the biggest risk of using nuclear power?
    The radioactive waste it produces, which is dangerous to humans and the environment.
  • What type of energy transformation happens when wood burns?
    Chemical energy is transformed into light and thermal energy.
  • What are fossil fuels?
    Coal, oil, and natural gas.
  • What energy transformation occurs in a toaster?
    Electrical energy is transformed into thermal energy.
  • Transforming chemical energy into electrical energy isn’t useful to us.
    False
    True
  • How does moving water create energy?
    It spins turbines to generate hydropower.
  • Can energy be created or destroyed?
    No, energy can only be changed from one form to another.
  • What device is used to transform solar energy into electrical energy?
    Solar panels.
  • Energy makes changes and movement possible.
    False
    True
  • Oil, coal and natural gas are all forms of energy.
    False
    True
  • When mechanical energy is released, it can do work.
    True
    False
  • How does burning fossil fuels harm the environment?
    It contributes to global warming, causes air pollution, and leads to acid rain.
  • Does hydropower cause pollution?
    No, but it can affect the habitats of aquatic species.
  • Why is a bow and arrow an example of mechanical energy?
    Because it stores potential energy and releases it as kinetic energy
  • What type of energy is produced by movement?
    Kinetic energy
  • The lighter an object is and the faster it moves, the more kinetic energy it has.
    False
    True
  • Burning fossil fuels can cause acid rain to fall.
    True
    False
  • Radioactive waste is a big risk of using nuclear power.
    True
    False
  • We can use geothermal energy from the sun to do many things.
    False
    True
  • What is electrical energy used for?
    To store food
    To create sound
    To power machines
    To make objects heavier
  • When energy transformations are useful, we say the energy is lost or wasted.
    False
    True
  • Fossil fuels are renewable energy sources.
    True
    False
  • When you jump off a diving board, what energy transformation happens?
    Potential energy is transformed into kinetic energy.
  • Although we may not notice, energy is all around us.
    True
    False
  • Where is potential energy stored?
    In sound waves
    In moving objects
    In food only
    In objects that are still
  • There are some energy sources that will never run out
    False
    True
  • What covered the Earth millions of years ago?
    Swamps with giant ferns and trees.
  • What happens when oil spills into the ocean?
    It causes serious environmental problems and harms marine life.
  • How did fossil fuels form?
    Over millions of years, heat and pressure turned decaying material into coal, oil, or natural gas.
  • What is biomass energy made from?
    Trees, plants, and rubbish.
  • What does chemical energy do in the context of food?
    It produces heat in cold environments
    It absorbs light energy for growth
    It is stored and released when the body digests food
    It creates vibrations that produce sound
  • Why are renewable energy sources good for the environment?
    They do not cause pollution and are not harmful.
  • What happened to dead plants and animals?
    Their remains settled on the ocean bed and in swamps, then got covered by sediment.
  • What is uranium?
    A non-renewable energy source used in nuclear power stations to produce electricity.
  • What is renewable energy?
    Energy that comes from sources that will never run out.
  • What is the primary source of light energy on Earth?
    the earth
    the moon
    fire
    the sun
  • Energy can be created, destroyed and transformed.
    False
    True
  • Energy makes changes and movement possible.
    True
    False
  • Why are fossil fuels non-renewable?
    They take millions of years to form and cannot be replaced once used up.
  • What is energy transformation?
    The process of changing one form of energy into another.
  • Energy is continually transformed.
    True
    False
  • What do wind turbines produce before converting it into electrical energy?
    Mechanical energy.
  • What is geothermal energy?
    Heat energy that comes from the Earth's core.
  • How is sound energy created?
    By the transformation of heat energy
    By the reflection of light
    By the movement of electrons
    By the vibration of objects and air particles
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