Grade 10 · Science · Chemistry

10th grade Light: wavelength, frequency and energy worksheet

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Light: wavelength, frequency and energy

Grade 10 Science Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

Using E = hc ÷ λ with h = 6.626 × 10⁻³⁴ J·s and c = 3.00 × 10⁸ m/s, what energy does a 400 nm photon carry, in units of 10⁻¹⁹ J, Ari?
Using E = hc ÷ λ with h = 6.626 × 10⁻³⁴ J·s and c = 3.00 × 10⁸ m/s, what energy does a 656 nm photon carry, in units of 10⁻¹⁹ J, Bo?
Using E = hc ÷ λ with h = 6.626 × 10⁻³⁴ J·s and c = 3.00 × 10⁸ m/s, what energy does a 250 nm photon carry, in units of 10⁻¹⁹ J, Esme?
4.
How do c = λν and E = hν combine, Jun?
- E = hλ ÷ c
- E = h + c + λ
- E = hc ÷ λ
5.
By E = hc ÷ λ, what happens to photon energy as wavelength shrinks, Kira?
- It shrinks
- It grows
- It stays the same
6.
Milo says radio waves carry more energy per photon because their waves are bigger. Agree or disagree?
- Disagree: longer waves, less energy
- Agree: bigger waves are much stronger
- Agree: radio travels farther
7.
Pia says blue light travels faster than red light in a vacuum. Agree or disagree?
- Agree: blue waves are quicker
- Disagree: all colors travel at c
- Agree: more energy, more speed
8.
A TV remote sends invisible light. Which kind is it, Ren?
- Infrared
- Ultraviolet
- Gamma rays
9.
Why do ultraviolet photons cause sunburn when visible light doesn't, Tala?
- Each UV photon has more energy
- UV is a kind of heat
- UV waves are longer
10.
Compared with visible light, how much energy does each microwave photon carry, Zee?
- Much less
- Much more
- Exactly the same

Light: wavelength, frequency and energy. Every version has 10 questions, and the answer key prints on the second page.

I can use c = λν to find a frequency from a wavelength, with c = 3.00 × 10⁸ m/s.
I can use E = hν, with h = 6.626 × 10⁻³⁴ J·s, and E = hc ÷ λ.
I can order the electromagnetic spectrum and say that shorter waves carry more energy per photon.
I can link a bigger drop on the energy ladder to a bluer photon.

Standard: supports HS-PS4-1

wavelength (λ): The distance from one crest to the next

frequency (ν): Waves passing a point each second, in hertz

photon: One packet of light energy

Planck's constant (h): 6.626 × 10⁻³⁴ J·s; it links a photon's energy to its frequency

electromagnetic spectrum: All kinds of light, from radio to gamma rays

Your child divided the wavelength by the speed. Frequency is c ÷ λ, and energy is hc ÷ λ: the wavelength goes on the bottom.

Your child divided h by the frequency. Energy grows with frequency: E = h × ν.

Your child thought longer waves carry more energy. It's the reverse: shorter waves have higher frequency and more energy per photon.

What is the most common mistake with light: wavelength, frequency and energy?

Your child divided the wavelength by the speed. Frequency is c ÷ λ, and energy is hc ÷ λ: the wavelength goes on the bottom.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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