Waves

 A wave is a disturbance that transfers ___ from one place to another.

• Water

• Air

• Matter

• Energy

• Electrons

Tags

NGSS.MS-PS4-1

What kind of waves vibrate our eardrums so we can hear?

• Microwaves

• Water Waves

• Light Waves

• Sound Waves

• Radio Waves

Tags

NGSS.MS-PS4-2

What kind of waves require some sort of medium to travel through?

• Mechanical waves

• Electromagnetic waves

• All of the above

• None of the above

Answer explanation

Mechanical waves are waves that require a medium in order to transport their energy from one location to another. Because mechanical waves rely on particle interaction in order to transport their energy, they cannot travel through regions of space that are void of particles.

Tags

NGSS.MS-PS4-1

What kind of waves can travel through a vacuum?

• Mechanical waves

• Electromagnetic waves

• All of the above

• None of the above

Answer explanation

Electromagnetic waves don't require medium to propagate because they are formed by changing magnetic and electric field , and these fields don't require any medium to propagate . Therefore radio-waves don't require medium to propagate .

Tags

NGSS.HS-PS4-3

What kind of waves transfer energy?

• Mechanical waves

• Electromagnetic waves

• All of the above

•  None of the above

Tags

NGSS.MS-PS4-1

Which of the following waves is a mechanical wave?

• Light

• Microwaves

• Radio waves

• X-rays

• Sound

Answer explanation

Sound waves are classed as mechanical waves because they pass through a physical medium such as air, liquids like water, or metals like silver.

Which of the following waves is an electromagnetic wave?

• Water waves

• Seismic waves

• Waves in a spring

• Light

• Sound

Answer explanation

The terms light, electromagnetic waves, and radiation all refer to the same physical phenomenon: electromagnetic energy. This energy can be described by frequency, wavelength, or energy.

Tags

NGSS.MS-PS4-2

 In which of the following waves does the disturbance move in the same direction as the wave?

• Transverse waves

•  Longitudinal waves

• All of the above

• None of the above

Answer explanation

Transverse waves are motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance. Examples of transverse waves include vibrations on a string and ripples on the surface of water.

In which of the following waves does the disturbance move in a perpendicular direction to the wave?

• Transverse waves

• Longitudinal waves

• All of the above

• None of the above

Answer explanation

In longitudinal waves , the vibrations are parallel to the direction of wave travel. Examples of longitudinal waves include: sound waves. ultrasound waves. seismic P-waves.

What type of wave is a sound wave?

• Transverse and mechanical

• Transverse and electromagnetic

• Longitudinal and mechanical

•  Longitudinal and electromagnetic

Answer explanation

Sound waves are longitudinal waves. When longitudinal waves travel through any given medium, they also include compressions and rarefactions. Compression occurs when particles move close together creating regions of high pressure. Sound energy, or energy associated with the vibrations created by a vibrating source, requires a medium to travel, which makes sound energy a mechanical wave.

Tags

NGSS.MS-PS4-2