Question

Match the vocabulary terms to their definitions.

(6 points)
Light Energy
Chemical Energy
Kinetic Energy
Mechanical Energy
Thermal Energy
Electrical Energy

Answer 1

Light energy — energy carried by electromagnetic waves (radiant energy); e.g., sunlight or visible light from a bulb.

Chemical energy — energy stored in the bonds of atoms and molecules, released or absorbed in chemical reactions; e.g., energy in food or gasoline.

Kinetic energy — energy of motion; depends on an object's mass and speed (KE = 1/2 mv^2).

Mechanical energy — energy associated with the motion and position of an object; the sum of kinetic and potential energy in a system.

Thermal energy — internal energy from the random motion of particles in a substance (what we sense as temperature/heat).

Electrical energy — energy from the movement or position of electric charges; e.g., current powering a device or energy stored in a battery.