Physics Chapter on Waves and Light
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Questions and Answers

What is required for mechanical waves, such as sound waves, to travel?

  • A medium (correct)
  • An electrical source
  • A frequency
  • A vacuum

What happens to the amplitude of light when it passes through sunglasses?

  • It is completely blocked
  • It is lowered (correct)
  • It increases significantly
  • It remains unchanged

Which of the following statements about electromagnetic waves is true?

  • They are mechanical waves.
  • They can only travel through solids.
  • They can move through outer space. (correct)
  • They require a medium to travel.

How is the color of an object determined?

<p>By the color of light reflected off of it (C)</p> Signup and view all the answers

What is the relationship between the amplitude of a wave and the brightness of light?

<p>Higher amplitude represents brighter light. (D)</p> Signup and view all the answers

What happens to light when it strikes an opaque object?

<p>It is absorbed or reflected, but none passes through. (D)</p> Signup and view all the answers

Which statement correctly describes translucent materials?

<p>They bend light in many different directions, causing fuzziness. (D)</p> Signup and view all the answers

What is the primary characteristic of a transparent material?

<p>It transmits enough light for clear visibility. (B)</p> Signup and view all the answers

How does light behave when blocked by an object?

<p>It creates a shadow and proves light travels in a straight path. (B)</p> Signup and view all the answers

Which best describes the interaction of light with sunglasses?

<p>Light is transmitted, absorbed, and reflected depending on the material of the lens. (B)</p> Signup and view all the answers

Flashcards

Light travels in a straight line

Light moves directly from its source to the object it encounters, without bending.

Light interacts with matter

When light hits an object, it can be reflected, absorbed, or transmitted.

Opaque objects

Objects that block all light from passing through them.

Transparent objects

Objects that allow light to pass through them clearly.

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Translucent objects

Objects that allow some light to pass through them, but scatter it in different directions.

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Mechanical Waves

Waves that need a medium (solid, liquid, or gas) to travel.

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Electromagnetic Waves

Waves that do not need a medium to travel.

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Sound Waves

Mechanical waves that travel through a medium to create sound.

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Wave Amplitude

The height (or distance) of a wave, related to brightness.

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Sunglasses and Light

Sunglasses reduce the height of light waves, making light dimmer.

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