Forms of Energy

Compare and contrast electromagnetic energy and sound energy.

Electromagnetic and sound are both forms of energy. Electromagnetic is released by the sun and other stars. Sound energy is produced by vibrating matter. Electromagnetic waves can travel through space while sound can only travel through matter.

During photosynthesis, plants change thermal energy to chemical energy.

False

When you plug in a lamp, electromagnetic energy is converted to light energy.

False

__________ energy is the energy of an object that is moving or has the potential to move.

Mechanical

Identify at least three forms of energy involved when a musician plays an electric keyboard.

She uses chemical energy to move her fingers. When they press down on the keys, they have mechanical energy. The keyboard uses electrical energy and produces sound energy. The keyboard and the musician both have thermal energy because atoms are constantly moving.

__________ energy is the total kinetic energy of all the atoms in an object.

Thermal

A stretched rubber band has mechanical energy.

True

The energy stored in food is chemical energy.

True

Write true if the statement is true or false if the statement is false. Stars release electromagnetic energy into space.

True

If two objects have the same mass, which object has greater thermal energy? a. The object with larger atomic nuclei. b. The object with faster-moving atoms. c. The object with faster-moving electrons. d. The object with stronger chemical bonds.

b. The object with faster-moving atoms

Which form of energy travels in waves through empty space? a. sound energy b. electrical energy c. electromagnetic energy d. two of the above

c. electromagnetic energy

The sum of an object's kinetic and potential energy is its: a. thermal energy. b. chemical energy. c. mechanical energy. d. none of the above

c. mechanical energy.

Which energy conversion occurs in a battery? a. electrical energy → chemical energy b. electromagnetic energy → light energy c. chemical energy → light energy d. chemical energy → electrical energy

d. chemical energy → electrical energy

Energy stored in the nucleus of an atom is called: a. electromagnetic energy. b. electrical energy. c. thermal energy. d. nuclear energy.

d. nuclear energy.

The kinetic energy of moving electrons is referred to as __________ energy.

electrical

The energy released when two atomic nuclei fuse together is __________ energy.

nuclear

Energy that travels in waves through matter from a vibrating object is __________ energy.

sound