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

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

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

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

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

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

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

A) true
B) false

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

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