Diffraction

Diffraction

Assessment

Flashcard

Science

9th - 12th Grade

Hard

Created by

Barbara White

FREE Resource

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11 questions

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1.

FLASHCARD QUESTION

Front

Diffraction Noun

[dih-frak-shun]

Back

Diffraction


The spreading out of waves from a straight-line path as they pass through a narrow opening or around an edge.

Example: Sound waves from Jack bend, or diffract, as they pass through the doorway, allowing Jill to hear him even without a direct line of sight.
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2.

FLASHCARD QUESTION

Front

Huygens' Principle Noun

[hoy-genz prin-suh-pul]

Back

Huygens' Principle


The principle that every point on a wavefront can be considered a source of tiny secondary wavelets that spread forward.

Example: This diagram shows how a wave moves forward: each point on a wavefront acts as a source for a new, smaller wave, and the next wavefront is formed by combining them.
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3.

FLASHCARD QUESTION

Front

Diffraction Pattern Noun

[dih-frak-shun pat-ern]

Back

Diffraction Pattern


The pattern of bright and dark bands produced by the interference of waves after passing through an aperture or around an obstacle.

Example: This image shows that when a wave passes through a narrow gap, it spreads out more (large diffraction effect) than when it passes through a wide gap.
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4.

FLASHCARD QUESTION

Front

Coherent Light Noun

[koh-heer-ent lite]

Back

Coherent Light


Light in which the waves have a constant and predictable phase relationship, allowing for stable interference and diffraction patterns.

Example: This diagram shows how a single light source passing through two narrow slits creates two new sources of light waves whose crests and troughs are perfectly aligned, making them coherent.
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5.

FLASHCARD QUESTION

Front

Monochromatic Light Noun

[mon-oh-kroh-mat-ik lite]

Back

Monochromatic Light


Light that is composed of a single wavelength or a very narrow range of wavelengths, appearing as a single color.

Example: This diagram shows that monochromatic light, like from a laser, consists of light waves of a single frequency, unlike sunlight which has many frequencies.
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6.

FLASHCARD QUESTION

Front

Diffraction Grating Noun

[dih-frak-shun gray-ting]

Back

Diffraction Grating


A device with many small, equally spaced slits or lines that diffracts light to form a pattern for wavelength analysis.

Example: When a beam of white light hits a diffraction grating, the light waves bend and spread out, separating into their individual colors to form a spectrum.
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7.

FLASHCARD QUESTION

Front

Transmission Grating Noun

[trans-mish-un gray-ting]

Back

Transmission Grating


A diffraction grating on a transparent material where light passes through spaces between lines, which act as multiple parallel slits.

Example: When light passes through a transmission grating, it splits into multiple beams, creating a pattern of bright spots called diffraction orders on a screen.
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