50+ Physical Science worksheets for 9th Grade on Quizizz | Free ... - Free Printable

Problem Analysis:

The image contains a set of multiple-choice questions related to waves in physical science. Below, I will solve each question step by step and provide explanations for the correct answers.

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Question 1:

A sound wave is produced in a metal cylinder by striking one end. Which of the following occurs as the wave travels along the cylinder?

- A. It transfers matter.
- B. Its amplitude increases.
- C. It transfers energy.
- D. Its frequency increases.

#### Explanation:
- Sound waves are mechanical waves that require a medium (such as air, water, or solids) to travel. They transfer energy from one point to another but do not transfer matter.
- The amplitude of a wave decreases over distance due to energy dissipation (e.g., friction or spreading out).
- The frequency of a wave remains constant unless it interacts with a different medium or undergoes reflection or refraction.
- Therefore, the correct answer is that sound waves transfer energy.

#### Correct Answer:
C. It transfers energy.

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Question 2:

A radio station transmits to a receiving antenna. The radio wave sent is a:

- A. Longitudinal Wave
- B. Sound Wave
- C. Transverse Wave
- D. Compression Wave

#### Explanation:
- Radio waves are a type of electromagnetic wave. Electromagnetic waves are transverse waves, meaning their oscillations are perpendicular to the direction of wave propagation.
- Radio waves are not longitudinal waves (which have oscillations parallel to the direction of propagation, like sound waves).
- Radio waves are also not sound waves, as sound waves are mechanical and require a medium to propagate.
- Compression waves are a type of longitudinal wave, so this option is incorrect.

#### Correct Answer:
C. Transverse Wave

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Question 3:

A stretched spring attached to two fixed points is compressed on one end and released as shown in the image. The resulting wave travels back and forth between the two fixed ends of the spring until it comes to a stop. This mechanical wave is an example of a:

- A. Reflection
- B. Longitudinal Wave
- C. Refracted Wave
- D. Transverse Wave

#### Explanation:
- The image shows a spring being compressed and released, causing a wave to travel along its length. This type of wave is a longitudinal wave because the particles of the spring move back and forth parallel to the direction of wave propagation.
- Reflection refers to the bouncing back of a wave when it encounters a boundary, not the type of wave itself.
- Refracted waves occur when a wave changes direction upon entering a new medium, which is not relevant here.
- Transverse waves involve particle motion perpendicular to the direction of wave propagation, which is not the case for the spring wave.

#### Correct Answer:
B. Longitudinal Wave

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Question 4:

Astronauts on the Moon would not be able to hear a landslide because:

- A. the magnetic field of the Moon is too weak to carry sound.
- B. air molecules on the Moon are too far apart to carry sound.
- C. intense sunlight destroys sound waves.
- D. the lunar dust deadens sounds.

#### Explanation:
- Sound waves require a medium (such as air, water, or solids) to propagate. The Moon has no atmosphere, meaning there are no air molecules to carry sound waves.
- The magnetic field of the Moon does not affect the propagation of sound waves.
- Intense sunlight does not destroy sound waves; it affects light waves.
- Lunar dust might absorb some sound, but the primary reason astronauts cannot hear sound on the Moon is the lack of an atmosphere.

#### Correct Answer:
B. air molecules on the Moon are too far apart to carry sound.

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Question 5:

Sound waves cannot carry energy through:

- A. air
- B. water
- C. a mirror
- D. space

#### Explanation:
- Sound waves are mechanical waves that require a medium to propagate. They can travel through solids (like mirrors), liquids (like water), and gases (like air).
- However, sound waves cannot travel through a vacuum, such as outer space, because there are no particles to transmit the wave.

#### Correct Answer:
D. space

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Question 6:

Where does visible light fall on the electromagnetic spectrum?

This question is incomplete in the provided image, so I cannot provide a solution for it. If you can provide more details or the options for this question, I can help solve it as well.

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Final Answers:

1. C. It transfers energy.
2. C. Transverse Wave
3. B. Longitudinal Wave
4. B. air molecules on the Moon are too far apart to carry sound.
5. D. space

If you have any further questions or need clarification, feel free to ask!