Question

In the video, what examples of mechanical waves does Mrs. Thomason use? Select all that apply

a
Light
b
Sound
c
Ocean
d
Guitar strings
Question 2 (1 point)
In the video, which is an example of a longitudinal wave that Mrs. Thomason provides?

a
ocean waves moving up and down because the partciles move in a different direction as the wave
b
pushing a spring back and forth because the particles move in the same direction as the wave
c
doing jumping jacks because the partciles move in the same direction as the wave
d
people moving up and down in a stadium because the people move in a different direction as the wave
Question 3 (1 point)
According to the video, what does Mrs. Thomason (movie franchise) love but why does it drive her crazy as a science teacher?

a
She loves star wars but it drives her crazy because in the movies you shouldn't be able to hear sound in outer space because it is a vacuum.
b
She loves star wars but it drives her crazy because in the movies you shouldn't be able to see light in outer space because it is a vacuum.
c
She loves star trek but it drives her crazy because in the movies you shouldn't be able to hear sound in outer space because it is a vacuum.
d
She loves star trek but it drives her crazy because in the movies you shouldn't be able to hear sound in outer space because it is a vacuum.
Question 4 (1 point)
According to the video, Which is correct about electromagnetic and mechanical waves?

a
Electromagnetic waves move much slower than mechanical waves.
b
Electromagnetic waves are transverse but mechanical waves are longitudinal.
c
A mechanical wave needs a medium to travel, but an electromagnetic wave can travel through a vacuum.
d
Electromagnetic waves occur when a charged particle slows down, but mechanical waves occur when charged particles move faster.
Question 5 (1 point)
In the video Mrs. Thomason discusses how how particles move perpendicular to the wave in a transverse wave. The diagram represents a transverse wave moving to the right. Point A represents a particle in the path of the wave.



How will particle A move when the wave passes through its position?

a
the partcile will move from left to right
b
the partcile will move from right to left
c
the partcile will move down and up
d
the particle will not move
Question 6 (1 point)
In the video with Dr. Jeff, what is the first property/setting of the water tank that they change?

a
amplituide
b
wavelength
c
medium
d
the shape
Question 7 (1 point)
According to the video, which of the following correctly shows the part of the wave that represents the wavelength?



a
A
b
B
c
C
d
D
Question 8 (1 point)
According to the video, what is the relationship between wavelength and energy of a wave?

a
The longer the wavelength, the more energy the wave has
b
The shorter the wavelength, the more energy the wave has
c
The shorter the wavelength, the less energy the wave has
d
Wavelength does not affect the energy of the wave
Question 9 (1 point)
Which wave diagram has both wavelength L and amplitude A labeled correctly?

Answer 1

Here are my answers and brief explanations. I couldn’t answer 7 and 9 because they refer to images — please upload or describe the diagrams for those two and I’ll pick them.

1) Examples of mechanical waves (select all that apply)
- b, c, d — Sound, Ocean, Guitar strings
(Light is an electromagnetic wave, not mechanical.)

2) Longitudinal wave example Mrs. Thomason provides
- b — pushing a spring back and forth (particles move in same direction as wave)

3) Movie franchise she loves and why it drives her crazy
- a — She loves Star Wars but it drives her crazy because you shouldn’t be able to hear sound in outer space (vacuum)

4) Correct statement about electromagnetic vs. mechanical waves
- c — A mechanical wave needs a medium to travel, but an electromagnetic wave can travel through a vacuum

5) How particle A moves in a transverse wave moving to the right
- c — the particle will move down and up (particles move perpendicular to wave direction)

6) In Dr. Jeff’s water tank video, the first property/setting they change
- a — amplitude

7) Which shows the wavelength?
- I can’t determine this without the image. (Wavelength = horizontal distance between successive crests or successive troughs.)

8) Relationship between wavelength and energy
- b — The shorter the wavelength, the more energy the wave has

9) Which diagram has both wavelength L and amplitude A labeled correctly?
- I can’t determine this without the image. (Amplitude = vertical distance from equilibrium to crest; wavelength = horizontal distance between successive crests/troughs.)

If you upload or describe the wave diagrams for Q7 and Q9 (which label is A/B/C/D and what each line marks), I’ll pick those answers.