Waves Concepts and Applications

The relationship between wavelength and frequency is λ=c/f.  Calculate the wavelength of light that has a frequency of 5.2 x 10¹² 1/s. The speed of of light is 3.0x 10⁸ m/s.

• 5.8 x 10 ^-5 m
• 5.8 x 10 ^-7 m
• 5.19 x 10 ¹⁴ m
• 1.56 x 10 ²³ m

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NGSS.HS-PS4-1

High frequency waves have _________ wavelengths.

• varying
• long
• the same
• short

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Solve this problems using the equation: 
C = λν
If an AM radio station broadcasts at
9.95 x 10⁵ Hz, what is the wavelength of this radiation?

• 6.59 x 10^-28 m
• 1.01 x 10^-6 m
• 3.32 x 10^-3 m
• 302 m

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NGSS.HS-PS4-1

A microwave oven emits radiation at a wavelength of 0.005 m. What is the frequency of this radiation?

• 6.67 x 10^-7 Hz
• 2.00 Hz
• 1.50 x 10⁶ Hz
• 6.00 x 10¹⁰ Hz

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NGSS.HS-PS4-1

1.  Frieda the fly flaps its wings back and forth 121 times each second. The period of the wing flapping is 

• 0.008 Hz
• 0.008 s
• 121 Hz
• 121 s

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NGSS.HS-PS4-1

1.  A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?

• 500 m/s
• 50 m/s
• 5 m/s
• 0.5 m/s

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NGSS.HS-PS4-1

An argon ion laser emits light at 488 nm. What is the frequency of this radiation? (1 nm = 1x10^-9m)

• 4.07 x 10^-19 Hz
• 6.15 x 10¹⁴ Hz
• 1.46 x 10² Hz
• 2.05 x 10⁶ Hz

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NGSS.HS-PS4-1

An ambulance is driving towards you as you stand on the sidewalk. What happens to the pitch of the siren as it comes towards you?

• It increases

• It decreases

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Light can change color due to the Doppler Effect.

• True

• False

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NGSS.HS-PS4-4

You are driving in a car and honk the horn at a person standing in the street. As you approach the person, what happens to the pitch of the horn according to you in the car?

• It increases

• It decreases

• It stays the same because you are in the car moving with the sound.

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