A) motion B) energy C) light D) liquid
A) vibrating objects B) thinking about objects C) changes in the state of matter D) energy changing form
A) solid objects B) matter C) water D) empty space
A) gases B) gels C) solids D) liquids
A) a block of iron B) a mixture of gases C) empty space D) a pool of water
A) straight lines B) waves C) empty space D) circular motions
A) hear B) feel C) see D) speak
A) true B) false
A) a form of energy produced by vibrating objects B) the substance that does not allow electricity to travel through it C) a form of energy that travels in waves and can move in empty space D) the amount of matter in an object
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 |