NGSS.4-PS4-1

Which technique is the boat using to find the distance from the surface of the ocean to the bottom?

• Morse code
• Radio
• Sonar 
• Sound tracking

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NGSS.4-PS4-1

To make a sound from a stringed instrument louder you must

• hit it
• pluck it harder
• hold it higher
• pluck it softer

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NGSS.4-PS4-1

Which letter(s) represent the trough of the wave?

• A
• B & D
• D
• C & G

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NGSS.4-PS4-1

If you walk into an empty gym and yell, why would you hear an echo?

• The gym walls are soft and uneven. 
• The sound waves are being absorbed by the hard smooth walls.
• The sound waves are bouncing off the hard smooth gym walls.
• The gym walls are really clean.

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NGSS.4-PS4-1

Transverse waves are ___.

• Parallel
• Perpendicular
• Weird

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What is vibration?

• how loud a sound is
• the back and forth movement of matter
• how high or low a sound is
• the loudness or softness of a sound

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NGSS.4-PS4-1

light moves in

• waves

• rays

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The pitch of a stringed instrument can be affected by

• the length of the bow being rubbed across strings

• the size of a player's fingers

• the length and thickness of its strings

• how much energy is used when it is plucked

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NGSS.4-PS4-1

Objects that vibrate quickly make sounds with ___________.

• a high volume

• no sound

• a high pitch

• a low volume

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light is a .........

• transverse wave

• longitudinal wave

• both a and b

• none of these

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NGSS.4-PS4-1