PS.7.2.2 - Energy Transformations

What type of energy is stored in the bonds of molecules?

• Kinetic energy

• Chemical energy

• Sound energy

• Thermal energy

Which form of energy is associated with the movement of electrons?

• Light energy

• Electricity

• Potential energy

• Radiant energy

What is the energy called that an object has due to its motion?

• Potential energy

• Kinetic energy

• Chemical energy

• Thermal energy

Which type of energy is carried by electromagnetic waves?

• Sound energy

• Radiant energy

• Chemical energy

• Thermal energy

If you stretch a rubber band and hold it, what type of energy does it have due to its position?

• Kinetic energy

• Potential energy

• Thermal energy

• Sound energy

A bell rings and you hear the sound. Which type of energy transfer is primarily involved in this process?

• Light energy

• Sound energy

• Chemical energy

• Radiant energy

When you turn on a lamp, electrical energy is converted into which type of energy that allows you to see?

• Sound energy

• Light energy

• Chemical energy

• Kinetic energy

Which of the following best describes thermal energy?

• Energy stored in chemical bonds

• The total energy of all the particles of an object

• Energy caused by an object's vibrations

• Energy in the form of moving waves of light

A student places a metal spoon in a cup of hot water. After a few minutes, the spoon becomes warm. Explain which type of energy transfer has occurred and why.

• Light energy transfer, because the spoon glows

• Sound energy transfer, because the spoon vibrates

• Thermal energy transfer, because heat moves from the water to the spoon

• Chemical energy transfer, because the spoon reacts with water

A ball is held at the top of a hill and then released. Describe the changes in energy as the ball rolls down the hill.

• The ball's potential energy increases and kinetic energy decreases

• The ball's potential energy decreases and kinetic energy increases

• Both potential and kinetic energy remain the same

• The ball's chemical energy increases