Waves Intro

Sound is produced when something ______________

• Vibrates

• Moves through empty space

Answer explanation

Sound is produced when something vibrates. Vibrations create pressure waves in the air, which we perceive as sound. Therefore, the correct answer is 'Vibrates'.

Tags

NGSS.MS-PS4-1

This picture is an example of a

• longitudinal wave

• transverse wave

• i do not know and do not wish to answer.

Answer explanation

This picture represents a transverse wave, where the oscillations occur perpendicular to the direction of wave travel, unlike longitudinal waves where oscillations are parallel to the direction of travel.

Tags

NGSS.MS-PS4-1

This picture is an example of which type of wave?

• transverse wave

• longitudinal wave

• ocean wave

• I do not know and do not wish to answer.

Answer explanation

The picture depicts a longitudinal wave, where the particles of the medium move parallel to the direction of wave propagation. This is characteristic of sound waves, distinguishing it from transverse waves where particle movement is perpendicular.

Tags

NGSS.MS-PS4-1

These waves need a medium to travel through.

• Transverse

• Electromagnetic

• Mechanical

• Light

Answer explanation

Mechanical waves require a medium, such as air or water, to travel through. In contrast, transverse and electromagnetic waves can propagate through a vacuum, making 'Mechanical' the correct choice.

What type of wave is this?

• Transverse wave

• Longitudinal wave

• Electromagnetic wave

• Mechanical wave

Answer explanation

A transverse wave is characterized by particle motion that is perpendicular to the direction of wave propagation. This distinguishes it from longitudinal waves, where particle motion is parallel to the wave direction.

Tags

NGSS.MS-PS4-1

What type of wave is this?

• Mechanical

• Electromagnetic

• Transverse

• Longitudinal

Answer explanation

The correct answer is 'Longitudinal' because longitudinal waves are characterized by particle displacement parallel to the direction of wave propagation, such as sound waves, unlike transverse waves where displacement is perpendicular.

Tags

NGSS.MS-PS4-1

These waves move in an up and down motion.

• Transverse

• Longitudinal

Answer explanation

Transverse waves move in an up and down motion, where the particle displacement is perpendicular to the direction of wave propagation. In contrast, longitudinal waves move in a back and forth motion.

Tags

NGSS.MS-PS4-1

Mediums act as "roads" for waves. Mediums are really just types of what?

• Matter

• Waves

• Light

• Energy

Answer explanation

Mediums are substances through which waves travel, making them types of matter. They provide the necessary environment for wave propagation, unlike waves, light, or energy, which are different concepts.

Tags

NGSS.MS-PS4-2

Which options below represent mediums? (select all that apply).

• Water

• Light

• Copper

• Air (gas)

Answer explanation

Mediums are substances through which energy or waves can travel. Water, copper, and air (gas) are all mediums as they can transmit sound or light. Light, however, is not a medium; it is a form of energy.

Tags

NGSS.MS-PS4-2

Waves carry energy, but not _____________.

• Matter

• Waves

• Light

• Sound

Answer explanation

Waves can transport energy through various mediums, but they do not carry matter itself. This is why the correct answer is 'Matter', as waves can exist without transferring any physical substance.