6.8C Energy Waves

A student creates this model using a rope between two students to show energy moving through a

system:

Student A moves the rope while Student B holds their end steady.

Which statement best explains how this model shows energy transfer?

• The energy causes each part of the rope to move up and down as it travels from Student A to

  Student B

• The energy makes the rope move sideways toward Student B.

• The energy stays only where Student A moves the rope.

• The energy makes the rope stretch longer.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which diagram shows a longitudinal wave?

• Top diagram because the coils move back and forth in the same direction as the wave

• Bottom diagram, because the coils move back and forth in the same direction as the wave

• Bottom diagram, because the coils move up and down perpendicular to the wave direction

Tags

NGSS.MS-PS4-1

A student flicks a line of dominoes as shown in the diagram:

Which type of wave is this model demonstrating?

• A longitudinal wave because the dominoes move up and down as they fall.

• A transverse wave because the energy moves forward as dominoes push in the same direction.

• A longitudinal wave because the energy moves forward as dominoes push in the same direction.

• A transverse wave is caused by the dominoes moving up and down as they fall.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A student observes a small cube floating on water to show how energy moves through the system:

Select TWO statements that correctly explain how this model shows energy transfer.

• The energy only works when the cube moves up.

• The cube moves up and down as energy passes through the water.

• The energy moves through the water while making the cube move up and down.

• The cube stays in one spot on the water.

A student creates a model using a slinky. Points a, b, and c are marked along the slinky as shown:

How will point b move when energy passes through this point in the system?

• Forward along the slinky

• In circles

• Up and down while energy moves through

• Remain still

Tags

NGSS.MS-PS4-1

What causes waves to be produced?

• Gravity

• Vibrations

• Heat

• Light

Answer explanation

Waves are produced by vibrations, not by gravity, heat, or light. When an object vibrates, it creates a disturbance in the surrounding medium, which results in the formation of waves.

What do waves carry?

• Molecules

• Energy

• Matter

• Water

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which diagram best represents the motion of a particle in a transverse wave?

• A
• B
• C
• D