Parts of a Wave

The red dot represents a point on a rope. As a transverse wave moves through the rope, which picture shows how the dot will move?

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Answer explanation

In transverse waves, particles (in this case, the rope) moves perpendicular to the direction of the wave. The wave moves from left to right, which the rope itself moves up and down.

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NGSS.MS-PS4-1

Which one of the diagrams represents the longest wavelength?

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Answer explanation

In example B, the waves are the most spread out (5 grid squares wide) AKA the distance from peak to peak is the greatest

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A high frequency is a wave that...

• is tall; there is a big distance between the highest and lowest points

• is long; there is a long distance from one crest to the next

• is thin; there is a short distance from one crest to the next

• is short; there is a small distance between the highest and lowest points

Answer explanation

Frequency is how quickly a wave passes in one second. If the crests are close togther, more of them will pass in one second

Which one of the diagrams represents the shortest wavelength?

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Answer explanation

In example C, the waves are the closest together (about 3 grid squares wide) AKA the distance from peak to peak is the shortest

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NGSS.MS-PS4-1

Which one of the diagrams represents the greatest amplitude?

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Answer explanation

In example D, the waves are the tallest, meaning they have the greatest amplitude

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Select the two statements that are true

• Transverse wave: particle motion is perpendicular to wave motion

• Transverse wave: particle motion is parallel to wave motion

• Longitudinal wave: particle motion is perpendicular to wave motion

• Longitudinal wave: particle motion is parallel to wave motion

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NGSS.MS-PS4-1

How many wavelengths does this wave have?

• 4 and a quarter

• 8 and a half

• 1

• 7

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How many antinodes does this wave have?

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How many nodes does this wave have?

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How many crests does this wave have?

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