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Question 11 pts

Fill in the blank to complete the sentence:

If the disturbance transfers energy in a _____ pattern, then a wave is formed and you can see the wave moving continuously.

Question 31.5 pts
Use the drop down menus to complete the wave equation:

The equation for wave
[ Select ]
(v) can be calculated using
[ Select ]
(λ) and
[ Select ]
(f): v = λ × f.

Question 41 pts
Which statement best describes how the particles of a medium behave when a mechanical wave moves through the medium?

Group of answer choices

Particles travel in the direction that is perpendicular to the motion of the wave.

Particles travel in the direction of the wave, away from the source of the wave.

Particles stay in one place as the wave travels past them.

Particles move as the wave passes them but do not move along with the wave.

Question 51 pts
Headphone earpieces can produce sounds that seem very loud to the listener. However, a person standing a meter away may not even be able to hear those same sounds. Why are these sounds so much quieter a short distance away?
Group of answer choices

The amplitude of the waves decreases as the sound spreads out and is absorbed by air.

The wavelengths of the waves are too short to reach a person standing a meter away.

The frequency of the sound is too high to travel a full meter through the air.

Sound waves from headphones do not use air as a medium and travel directly into your ear.

Question 61.5 pts
Match the term to the correct definition:
Group of answer choices
Refraction

[ Choose ]
Reflection

[ Choose ]
Transmission

[ Choose ]

Question 71 pts
Fill in the blanks to complete the passage:

Another issue with using
waves as a source of energy is that they vary in frequency and amplitude. So, any device designed to generate energy using ocean waves must work with
wave frequencies and amplitudes to be efficient and reliable.

Question 92 pts
Apply your understanding of the relationship between frequency, wavelength, and amplitude to complete the paragraph.

The frequency, wavelength, and amplitude of a light wave can change. As the wavelength changes, so does the light’s
[ Select ]
. As the wavelength increases, frequency
[ Select ]
, which means that wavelength and frequency are
[ Select ]
proportional. Changing either of these properties
[ Select ]
the amplitude.

Question 101 pts
As light moves farther from its source, it becomes less bright. How does a wave model of light explain the change in brightness? Select all that apply.
Group of answer choices

light spreads as it moves away from a source

energy is absorbed as it travels through different media

the amount of energy in an area decreases as light moves away from a source

light reflects off boundaries between media

Question 132 pts
Complete the paragraph to describe winter in the Southern Hemisphere.

When the South Pole is tilted
[ Select ]
the sun, the Southern Hemisphere experiences winter. The amount of the sun’s energy that strikes the area
[ Select ]
as compared to the sun’s energy in the summer. The daylight hours are
[ Select ]
, and the area temperatures
[ Select ]
.

1 answer

Here are the answers for each question:

Question 1: If the disturbance transfers energy in a regular pattern, then a wave is formed and you can see the wave moving continuously.

Question 3: The equation for wave velocity (v) can be calculated using wavelength (λ) and frequency (f): v = λ × f.

Question 4: Which statement best describes how the particles of a medium behave when a mechanical wave moves through the medium?

  • Particles move as the wave passes them but do not move along with the wave.

Question 5: Why are these sounds so much quieter a short distance away?

  • The amplitude of the waves decreases as the sound spreads out and is absorbed by air.

Question 6: Match the term to the correct definition:

  • Refraction: The bending of a wave as it enters a different medium.
  • Reflection: The bouncing back of a wave when it hits a surface.
  • Transmission: The passage of a wave through a medium.

Question 7: Another issue with using ocean waves as a source of energy is that they vary in frequency and amplitude. So, any device designed to generate energy using ocean waves must work with varying wave frequencies and amplitudes to be efficient and reliable.

Question 9: The frequency, wavelength, and amplitude of a light wave can change. As the wavelength changes, so does the light’s color. As the wavelength increases, frequency decreases, which means that wavelength and frequency are inversely proportional. Changing either of these properties can affect the amplitude.

Question 10: As light moves farther from its source, it becomes less bright. How does a wave model of light explain the change in brightness? Select all that apply.

  • light spreads as it moves away from a source
  • the amount of energy in an area decreases as light moves away from a source

Question 13: When the South Pole is tilted away from the sun, the Southern Hemisphere experiences winter. The amount of the sun’s energy that strikes the area decreases as compared to the sun’s energy in the summer. The daylight hours are shorter, and the area temperatures drop.

Feel free to reach out if you need further clarification or help!