What is the main source of energy for most life on Earth?

• Heat from the Earth's core

• The Sun

• Chemical reactions in the atmosphere

• Geothermal energy

Which of the following is an example of chemical energy?

• A moving car

• A battery

• A spinning top

• A heated pan

Where is thermal energy stored in an object?

• In the motion of atoms and molecules

• In the shape of an object

• In the chemical bonds between atoms

• In the object's electrical charge

Kinetic energy depends on which of the following factors?

• Temperature and mass

• Mass and velocity

• Velocity and position

• Temperature and position

What is an example of energy on the move?

• A book sitting on a shelf

• A light bulb converting electrical energy to light

• A person running

• A rock at the top of a hill

What happens to the energy of a system when energy changes form?

• It is lost

• It is conserved

• It increases

• It decreases

Which of the following describes energy being conserved?

• Energy is created during transformations

• Energy is destroyed during transformations

• The total amount of energy remains the same

• Energy only decreases during transformations

Which of the following is an example of potential energy?

• A moving car

• Water flowing in a river

• A stretched rubber band

• A hot cup of coffee

Which type of energy is associated with the position of an object?

• Kinetic energy

• Thermal energy

• Gravitational potential energy

• Chemical energy

What is the main reason energy is transformed from one type to another?

• To increase the total energy of a system

• To keep the energy balanced within a system

• To do work or perform a task

• To reduce the amount of energy used