Dolphins communicate using special vibrations and sounds. How is this possible?

• Dolphins have good hearing.
• Energy flows easily through water.
• Dolphins are loud.
• The energy transfers to other dolphins through sound waves.

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NGSS.MS-PS4-2

Light waves travel in a _______ path.

• Straight
• Curved
• Squiggly

Why are sounds not heard in space?

• Space is too cold.
• There is too much matter in space.
• There is no matter in space for sound to travel through (it's a vacuum)
• Energy cannot move in space.

How does sound energy travel?

• in strings
• in lines
• in waves

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

What can sound waves NOT travel through?

• water
• air
• solids
• empty space

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NGSS.MS-PS4-2

A potato launcher can...

• transfer kinetic energy to thermal energy
• transform kinetic energy to sound energy
• transform stored energy to kinetic energy
• transfer stored energy to kinetic energy

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

When a student plays a guitar, how does the sound travel to your ears?

• using echoes
• through thermal energy
• through sound waves
• through potential energy

Tags

NGSS.MS-PS4-2

___________ is an excellent conductor because it traps heat easily.

• Wood
• Metal
• Plastic
• Wool

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

What's the best description of how sound waves travel?

• in a straight path to your ear
• back and forth from the source
• outwards in all directions
• upwards from the source

The path along which electrical current flows is called...

• circuit
• curciut
• curkit
• surkit