NGSS.4-PS4-1

Why does cupping your hands around your mouth when you shout make the sound travel further?

• The sound spreads out.
• Your voice gets louder.
• You are screaming.
• The sound energy is directed in one direction.

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NGSS.4-PS4-1

Sound waves travel best through —

• gases
• gases
• solids
• vacuums

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NGSS.4-PS4-1

Sound is caused by? 

• force
• vibrations
• instruments

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NGSS.4-PS4-1

When you measure the volume of sound what are you measuring

•  how high or low the sound is
  
  
• how loud or soft the sound is
• how long or short the sound is
• how little or big the sound is

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NGSS.4-PS4-1

How does sound travel?

• Sounds travels in waves
• sound travels slow
• sound travels fast
• sound doesn't travel

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NGSS.4-PS4-1

Sound Waves cause molecules to _______

• Vibrate
• Move
• Dance
• Freeze

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NGSS.4-PS4-1

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

The highest pitch is made by the _______ instrument.

• biggest
• wooden
• smallest
• shiniest

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NGSS.4-PS4-1

When a grasshopper rubs its lets together, a sound is made because

• its legs are hurt

• the movement causes vibrations

• the grasshopper is hungry and tired

• The grasshopper is warning other animals of danger

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NGSS.4-PS4-1

The distance from one crest to the next crest in a wave is

• wavelength

• crest

• trough

• amplitude

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NGSS.4-PS4-1