Unit 1: Waves Lesson 1: Introduction to Waves
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Questions and Answers

Waves are disturbances that transfer energy without transferring ______.

matter

Waves propagate through a medium or space by causing oscillations or vibrations in particles or ______.

fields

The highest point of a wave is called the ______.

crest

The lowest point of a wave is called the ______.

<p>trough</p> Signup and view all the answers

The maximum displacement from the rest position to the crest or trough is called the ______.

<p>amplitude</p> Signup and view all the answers

The distance between two consecutive crests or troughs is called the ______.

<p>wavelength</p> Signup and view all the answers

The number of wave cycles passing a fixed point in one second is called the ______.

<p>frequency</p> Signup and view all the answers

Longitudinal waves oscillate parallel to the direction of wave propagation, while ________________ waves oscillate perpendicular to the direction of wave propagation.

<p>transverse</p> Signup and view all the answers

The formula connecting speed (v), frequency (f), and wavelength ( ext{λ}) of a wave is: ________________

<p>Speed (v) = Frequency (f) × Wavelength (λ)</p> Signup and view all the answers

Frequency is the number of wave cycles passing a fixed point per second, measured in ________________ (Hz).

<p>Hertz</p> Signup and view all the answers

Wavelength is the distance between consecutive points of similar phase on a wave. It is denoted by the symbol ________________.

<p>λ</p> Signup and view all the answers

Seismic waves are waves generated by the sudden release of energy in the Earth's ________________.

<p>crust</p> Signup and view all the answers

Primary waves (P-waves) are the fastest, ________________ waves that travel through solids and liquids.

<p>longitudinal</p> Signup and view all the answers

Secondary waves (S-waves) are slower, ________________ waves that only travel through solids.

<p>transverse</p> Signup and view all the answers

Surface waves are a result of the interaction between body waves and the Earth's ________________.

<p>surface</p> Signup and view all the answers

Mechanical waves require a ________________ for propagation.

<p>medium</p> Signup and view all the answers

Sound waves are longitudinal mechanical waves that can travel through ________________, liquids, and gases.

<p>solids</p> Signup and view all the answers

Which type of wave can travel through a vacuum?

<p>Electromagnetic waves</p> Signup and view all the answers

What is the highest point of a wave called?

<p>Amplitude</p> Signup and view all the answers

Which type of wave requires a medium (solid, liquid, or gas) for propagation?

<p>Mechanical waves</p> Signup and view all the answers

What is the distance between two consecutive crests or troughs of a wave called?

<p>Wavelength</p> Signup and view all the answers

Which type of wave oscillates parallel to the direction of wave propagation?

<p>Longitudinal waves</p> Signup and view all the answers

What is the number of wave cycles passing a fixed point in one second called?

<p>Frequency</p> Signup and view all the answers

Which type of wave requires a medium for propagation?

<p>Sound waves</p> Signup and view all the answers

What is the relationship between pitch and frequency in sound waves?

<p>Higher pitch corresponds to higher frequency</p> Signup and view all the answers

What is the maximum displacement from the rest position to the crest or trough called?

<p>Amplitude</p> Signup and view all the answers

Which type of wave can travel through solids and liquids?

<p>Sound waves</p> Signup and view all the answers

What is the formula connecting speed (v), frequency (f), and wavelength (λ) of a wave?

<p>$v = f \times \lambda$</p> Signup and view all the answers

What is the number of wave cycles passing a fixed point in one second called?

<p>Frequency</p> Signup and view all the answers

Which type of wave oscillates parallel to the direction of wave propagation?

<p>Longitudinal waves</p> Signup and view all the answers

What is the distance between two consecutive crests or troughs of a wave called?

<p>Wavelength</p> Signup and view all the answers

What are seismic waves?

<p>Waves generated by the sudden release of energy in the Earth's crust</p> Signup and view all the answers

What is the relationship between volume and amplitude in sound waves?

<p>Higher amplitude results in a louder sound</p> Signup and view all the answers

Study Notes

Wave Characteristics

  • Waves transfer energy without transferring matter.
  • Waves propagate through a medium or space by causing oscillations or vibrations in particles or fields.

Wave Components

  • The highest point of a wave is called the crest.
  • The lowest point of a wave is called the trough.
  • The maximum displacement from the rest position to the crest or trough is called the amplitude.
  • The distance between two consecutive crests or troughs is called the wavelength.

Wave Types

  • Longitudinal waves oscillate parallel to the direction of wave propagation.
  • Transverse waves oscillate perpendicular to the direction of wave propagation.

Wave Formula

  • The formula connecting speed (v), frequency (f), and wavelength (λ) of a wave is: v = fλ.

Frequency and Wavelength

  • Frequency is the number of wave cycles passing a fixed point per second, measured in Hertz (Hz).
  • Wavelength is the distance between consecutive points of similar phase on a wave, denoted by the symbol λ.

Seismic Waves

  • Seismic waves are waves generated by the sudden release of energy in the Earth's interior.
  • Primary waves (P-waves) are the fastest, longitudinal waves that travel through solids and liquids.
  • Secondary waves (S-waves) are slower, transverse waves that only travel through solids.
  • Surface waves are a result of the interaction between body waves and the Earth's surface.

Mechanical Waves

  • Mechanical waves require a medium for propagation.
  • Sound waves are longitudinal mechanical waves that can travel through solids, liquids, and gases.

Wave Propagation

  • Electromagnetic waves can travel through a vacuum.
  • Mechanical waves require a medium (solid, liquid, or gas) for propagation.

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Description

Learn about the basics of waves, including their definition and labeling, as well as the various forms they can take such as sound waves, light waves, water waves, and seismic waves.

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