NGSS.4-PS4-1

When Mr. Sinyard yells his name in a cave, the sound reflects off the walls of the cave and travels back to his ears.  What is this called?

• refraction
• amplitude
• pitch
• echo

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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

High frequency waves have _________ wavelengths.

• varying
• long
• the same
• short

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NGSS.4-PS4-1

Sound is caused by....

• molecules
• vibrations
• people
• space

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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

Why can't humans hear sounds made by animals such as whales?

• Humans have a great range of sounds that can be heard.

• There are ultrasounds and infrasounds beyond human hearing.

• Whales live in the water where sound is unable to be transmitted.

• Whales are too large to make any sounds.

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NGSS.4-PS4-1

When you strike a key on the piano, one of the _________ begins to vibrate.

• strings

• keys

• pedals

• people

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NGSS.4-PS4-1

How does sound travel?

• in waves

• only through the air

• through magnets

• as thermal energy

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NGSS.4-PS4-1

Are all tsunami waves high?

• no

• yes

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NGSS.4-PS4-1

Which one of these shows how light travels?

¿Cuál de estos muestra cómo viaja la luz?

• 
• 

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NGSS.4-PS4-1