Sound is caused by....

• molecules
• vibrations
• people
• space

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is frequency?

• the number of vibrations per second
• how high or low a sound is
• the loudness or softness of a sound
• the back and forth movement of matter

Tags

NGSS.MS-PS4-1

Measure of how high or low a sound is

• amplitude
• compression
• speed of sound
• pitch

This is the unit used to measure the volume of a sound. 

• Decibel
• Medium
• Vibration
• Oscilloscope

This word refers to any substance that sound can travel through.  Sound can travel through solids, liquids, and gases.

• Decibel
• Medium
• Vibration
• Oscilloscope

This is what you get when soundwaves are reflected, or bounce back, off of a hard surface.

• Amplitude
• Pitch
• Volume
• Echo

Tags

NGSS.MS-PS4-2

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

Tags

NGSS.MS-PS4-2

which is a tool that is used in medicine to view internal organs and pregnancy.

• radar
• doppler
• ultrasound
• sonar

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

When a car moves towards you, the sound of its horn seems relatively...

• Low pitched
• High pitched
• Normal

Tags

NGSS.MS-PS4-1

When the car moves away from you, its horn seems...

• Low pitched
• High pitched
• Normal

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2