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

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

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

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

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

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

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

A) true
B) false

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

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