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