A) light B) energy C) motion D) liquid
A) vibrating objects B) changes in the state of matter C) energy changing form D) thinking about objects
A) empty space B) solid objects C) matter D) water
A) gases B) gels C) liquids D) solids
A) empty space B) a pool of water C) a block of iron D) a mixture of gases
A) empty space B) waves C) circular motions D) straight lines
A) speak B) feel C) hear D) see
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) a form of energy produced by vibrating objects D) the amount of matter in an object
A) a form of energy produced by vibrating objects B) the measure of the amount of gravity acting on an object's mass C) a force that works against motion D) move back and forth rapidly |