The girl wants to change the wave to make it display a greater energy transfer. What can she do to make this change?

Question

(1 point)
Responses

She can decrease the frequency of the wave.
She can decrease the frequency of the wave.

She can make the wavelength of the wave longer.
She can make the wavelength of the wave longer.

She can make the amplitude of the wave shorter.
She can make the amplitude of the wave shorter.

She can increase the frequency of the wave.

Which statement correctly describes the relationship between frequency and wavelength?(1 point)
Responses

Frequency and wavelength have no relationship.
Frequency and wavelength have no relationship.

Frequency increases as wavelength gets longer
Frequency increases as wavelength gets longer

Frequency is the same as wavelength.
Frequency is the same as wavelength.

Frequency increases as wavelength gets shorter

What is the wavelength in this wave picture?

(1 point)
Responses

0.4m
0.4m

0.5m
0.5m

0.7m
0.7m

1.0m

What is the amplitude of this model of a wave that a student has drawn?

(1 point)
Responses

1m
1m

2m
2m

6m
6m

the amplitude cannot be determined

Which statement is true about electromagnetic and mechanical waves? (1 point)
Responses

Electromagnetic waves travel slower than mechanical waves.
Electromagnetic waves travel slower than mechanical waves.

Electromagnetic waves can travel without a medium, but mechanical waves require a medium to travel.
Electromagnetic waves can travel without a medium, but mechanical waves require a medium to travel.

Electromagnetic waves are transverse, but mechanical waves are longitudinal.
Electromagnetic waves are transverse, but mechanical waves are longitudinal.

Electromagnetic waves all have the same frequency but mechanical waves occur with different frequencies and wavelengths.

Which question can Rebecca ask if she is trying to determine if a wave is electromagnetic?(1 point)
Responses

Can the wave transmit matter?
Can the wave transmit matter?

Can the wave travel through a vacuum?
Can the wave travel through a vacuum?

Can the wave travel through a solid?
Can the wave travel through a solid?

Can the wave transmit energy?

Between which two points would you measure the distance to find the wavelength of this wave?

(1 point)
Responses

B and F
B and F

A and G
A and G

B and D
B and D

C and E

This picture shows a longitudinal wave traveling through air.

Which explanation correctly describes the characteristics of section A of this wave?

(1 point)
Responses

The wave has the highest compression and least density in section A
The wave has the highest compression and least density in section A

The wave has the least compression and least density in section A
The wave has the least compression and least density in section A

The wave has the least compression and highest density in section A
The wave has the least compression and highest density in section A

The wave has the highest compression and highest density in section A

Answer 1

Here are the responses to your questions:

1. What can she do to make this change?

   • She can increase the frequency of the wave.
   • Explanation: Increasing the frequency will increase the energy transfer of the wave, as energy is proportional to frequency.

2. Which statement correctly describes the relationship between frequency and wavelength?

   • Frequency increases as wavelength gets shorter.
   • Explanation: This is based on the wave equation \( v = f \lambda \) (where \( v \) is wave speed, \( f \) is frequency, and \( \lambda \) is wavelength). If the speed of the wave is constant, increasing frequency leads to a shorter wavelength.

3. What is the wavelength in this wave picture?

   • (Answer depends on the presented image, but for selection)
   • If the options provided are 0.4m, 0.5m, 0.7m, 1.0m, you would choose according to the specific graph or picture of the wave provided.

4. What is the amplitude of this model of a wave that a student has drawn?

   • (Answer depends on the presented image, but for selection)
   • You would choose according to the specific drawing shown.

5. Which statement is true about electromagnetic and mechanical waves?

   • Electromagnetic waves can travel without a medium, but mechanical waves require a medium to travel.
   • Explanation: This is a fundamental distinction between the two types of waves.

6. Which question can Rebecca ask if she is trying to determine if a wave is electromagnetic?

   • Can the wave travel through a vacuum?
   • Explanation: Electromagnetic waves can travel through a vacuum, while mechanical waves cannot.

7. Between which two points would you measure the distance to find the wavelength of this wave?

   • (Answer depends on the presented wave diagram, but for selection)
   • Choose two points which correspond to one complete wave cycle, often from one crest to the next crest or a compression to the next compression.

8. Which explanation correctly describes the characteristics of section A of this wave?

   • The wave has the highest compression and highest density in section A.
   • Explanation: In a longitudinal wave, compression indicates areas where the particles are closer together, which corresponds to higher density.

Feel free to clarify which specific images or diagrams you are referring to for more precise answers to those questions!