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

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

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

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

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

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

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

A) false
B) true

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

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