A) light
B) energy
C) liquid
D) motion

A) energy changing form
B) changes in the state of matter
C) vibrating objects
D) thinking about objects

A) solid objects
B) empty space
C) water
D) matter

A) liquids
B) gels
C) gases
D) solids

A) empty space
B) a mixture of gases
C) a block of iron
D) a pool of water

A) waves
B) circular motions
C) empty space
D) straight lines

A) hear
B) see
C) feel
D) speak

A) false
B) true

A) the substance that does not allow electricity to travel through it
B) a form of energy that travels in waves and can move in empty space
C) the amount of matter in an object
D) a form of energy produced by vibrating objects

A) a form of energy produced by vibrating objects
B) a force that works against motion
C) move back and forth rapidly
D) the measure of the amount of gravity acting on an object's mass