7th Grade #8: Waves and Electromagnetic Radiation

• orange light has a longer distance between crests than green light

• blue light has a shorter distance between crests than red light

• violet light has a longer distance between crests than yellow light

• green light has a longer distance between crests than red light

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NGSS.MS-PS4-1

Rainbows form because of

• refraction

• reflection

• amplication

• absorption

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NGSS.MS-PS4-2

Has the highest frequency

• red

• yellow

• blue

• orange

• violet

Has the lowest frequency

• yellow

• blue

• orange

• green

• red

highest frequency to lowest frequency

• blue, green, orange, violet, red, yellow

• blue, orange, violet, red, green, yellow

• blue, green, red, violet, orange, yellow

• violet, blue, green, yellow, orange, red

Echoes are a result of

• reflection

• refraction

• absorption

• rarefaction

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NGSS.MS-PS4-2

When light waves go from air to water, their speed

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NGSS.MS-PS4-2

When sound waves go from air to water, their speed

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NGSS.HS-PS4-1

When light moves from air to water, it

• bends downward and is refracted

• bends upward and is reflected

• stays straight but moves more quickly

• bends at a 90 degree angle and is absorbed

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NGSS.MS-PS4-2

Choose the ways that electromagnetic waves are used in technology.

• x-raying bones

• radiation to shrink cancerous tumors

• airpods transmitting music to your ears

• a slinky spiraling down the stairs

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NGSS.HS-PS4-5