1) What do waves carry from place to place a) energy, but not matter b) matter, but not energy c) both energy and matter d) neither energy nor matter 2) What type of waves can travel through empty space? a) mechanical waves b) sound waves c) water waves d) electromagnetic waves 3) Waves that need a medium to travel through are called? a) medium waves b) mechanical waves c) Longitudinal waves d) electromagnetic waves 4) What is the highest point of a wave a) crest b) trough c) amplitude d) frequency 5) What is the lowest point of a wave? a) crest b) trough c) amplitude d) frequency 6) What is the distance between the center of a wave and its crest? a) crest b) trough c) amplitude d) frequency 7) What direction does the energy travel in TRANSVERSE waves? a) parallel  b) perpendicular c) diagonal d) upside down 8) What direction does the energy travel in LONGITUDINAL waves? a) parallel  b) perpendicular c) diagonal d) upside down

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