Y7 sound waves

travels through solids fastest because the molecules are closer together

• speed of sound
• wavelength
• frequency
• amplitude

Tags

NGSS.MS-PS4-2

Material (matter) through which a wave travels

• medium
• Doppler Effect
• sound
• pitch

Tags

NGSS.MS-PS4-2

How high or low a sound is; depends on the frequency (greater frequency= higher pitch)

• pitch
• frequency
• sound
• medium

Tags

NGSS.HS-PS4-1

The part of a longitudinal wave where the particles of the medium are close together.

• rarefaction
• compression
• crest
• trough

A part in a longitudinal wave where the particles are spread apart

• compression
• rarefaction
• crest
• trough

What might happen to an object sitting on top of a speaker if loud music is played through the speaker?

• Absolutely nothing would happen to the object.

• The object could move due to the vibrations of the sound.

• The object could appear a different color because the sound is absorbed.

• The object could stop the sound from being transmitted out of the speaker because sound cannot travel through a solid.

Tags

NGSS.4-PS4-1

NGSS.4-PS3-2

NGSS.3-PS2-1

How does sound travel?

• in waves

• only through the air

• through magnets

• as thermal energy

Tags

NGSS.4-PS4-1

NGSS.4-PS3-2

Which TWO of the following statements about sound are NOT true?

• Sound is produced through vibrations.

• Sound travels in waves.

• Sound can travel through outer space

• Sound waves can bounce off of objects to create an echo.

• Sound waves can only travel through the air.

Tags

NGSS.4-PS4-1

Sound waves can travel through all three states of matter. Which of the following best explains why sound travels most quickly through a solid?

• Solids always produce an echo, which makes the sound seem louder to the human ear.

• Only solids allow the vibrations to travel from one atom (particle) to another.

• In solids, the atoms (particles) are closest together, which allows the vibrations to travel rapidly from one to another through the object.

• Sound does not travel quickly through a solid. It travels most rapidly through a gas.

Tags

NGSS.4-PS4-1

Why can't sound travel through outer space?

• There is almost no matter in outer space, so the vibrations have no way to travel through the atmosphere. There is nothing to carry the sound waves through space.

• Sound actually travels very quickly through outer space because there is no matter to slow down the sound waves.

• There are too many planets and stars in outer space that absorb all of the sound waves, so they cannot travel to the human ear.

• Because outer space is a "vacuum," the vibrations are irregular and travel in too many directions for us to detect the sound.

Tags

NGSS.4-PS4-1