Gr. 7 - Heat in the Environment - Lesson 4

What is energy?

• Anything that moves cars and windmills

• Anything that has the capacity to produce a change in matter

• Anything that can be seen or touched

• Anything that comes from food

Which of these is an example of energy being used?

• A tree standing still

• A book sitting on a table

• A car moving thanks to motor combustion

• A rock lying on the ground

What is true about energy?

• It can be created but not destroyed

• It can be destroyed but not created

• It can be created and destroyed

• It can only be transferred or transformed

Which of the following is an example of a renewable energy source?

• Oil

• Coal

• Wind

• Gasoline

What does non-renewable energy mean?

• Energy that never runs out

• Energy that is naturally replenished

• Energy sources that are limited and get used up

• Energy that comes only from wind

When you use a battery in a flashlight, which transformation happens?

• Heat energy → Light energy

• Electric energy → Chemical energy

• Mechanical energy → Thermal energy

• Chemical energy → Electric energy

What happens when hot and cold water are mixed?

• The cold water becomes hotter only

• The hot water becomes colder only

• Energy disappears

• Thermal energy passes from hot water to cold water

How is energy transported to our homes?

• Through electric cables

• By water pipes

• By wind

• Through batteries

What is an example of energy storage?

• Windmills turning

• Mobile phone batteries

• Solar panels heating water

• A car engine running

Mechanical energy is created by:

• The burning of coal

• Movement of two objects

• The flow of water

• The light from the sun