Energy and Heat Quiz

What is energy?

• The capacity to perform work

• The movement of molecules

• The transfer of heat energy

• The resistance force between objects

How is the sun's energy released?

• In the form of light and heat

• Through chemical reactions

• By creating electromagnetic waves

• By transferring kinetic energy

During a camping trip, you start a fire to cook food. What type of energy does this fire radiate?

• Chemical energy

• Electrical energy

• Mechanical energy

• Heat energy

What is chemical energy?

• Energy from the sun

• Energy from moving molecules

• Energy released during a chemical reaction

• Energy created by electrons moving between atoms

During a thunderstorm, what type of energy is released when we see a flash of lightning?

• Chemical energy

• Electrical energy

• Mechanical energy

• Heat energy

John is studying physics and he came across a term 'mechanical energy'. Can you tell him what it is?

• It is the energy relating to the position of an object, like a book on a shelf

• It is the energy relating to objects in motion, like a car moving on a road

• It is the energy from the sun that moves through space, like sunlight reaching Earth

• It is the energy of moving molecules, like in a heated pot of water

What does the Law of Conservation of Energy state?

• Energy is created and destroyed

• Energy can only be transferred

• Energy can only be transformed

• Energy is never created or destroyed

Answer explanation

The Law of Conservation of Energy states that energy cannot be created or destroyed. This means that the total amount of energy in a closed system remains the same, it can only be transformed from one form to another. Hence, 'Energy is never created or destroyed' is the correct choice, highlighting the essence of this fundamental law in physics.

Temperature is the average kinetic energy of molecules.

• True

• False

What is the primary source of energy for the Earth?

• The moon

• The sun

• Wind energy

• Geothermal energy

What type of energy is stored in a battery?

• Chemical energy

• Electrical energy

• Mechanical energy

• Heat energy