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11th grade What different kinds of radiation do when absorbed worksheet

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What different kinds of radiation do when absorbed

Grade 11 Science Worksheet

NameDate

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

  1. A microwave oven rated 800 W runs for 30 s, and 0.25 kg of water absorbs all of it. With c = 4182 J/(kg·°C), how much does the water warm, to 0.1 °C, Ari?

  2. A microwave oven rated 700 W runs for 45 s, and 0.3 kg of water absorbs all of it. With c = 4182 J/(kg·°C), how much does the water warm, to 0.1 °C, Esme?

  3. Read this first

    Energy carried by one photon (worked out with E = hf)

    BandFrequency (Hz)Energy per photon (eV)
    FM radio100,000,0000.00000041
    green light600,000,000,000,0002.48
    ultraviolet1,500,000,000,000,0006.2
    X-ray3,000,000,000,000,000,00012,407

  4. Using the table, which photon carries the most energy, Jun?

    • The green light photon
    • The X-ray photon
    • The FM radio photon

  5. Using the table, how does a photon's energy change as frequency rises, Luz?

    • It rises in step with frequency
    • It falls
    • It stays the same

  6. A radio tower sends out a very powerful signal. Does that make its radio waves ionizing, Milo?

    • No: each photon has too little energy
    • Yes: a powerful enough beam ionizes
    • Yes: radio waves are ionizing

  7. A very dim X-ray beam and a very bright lamp shine on a sheet. Which can ionize atoms in it, Noah?

    • Neither of them
    • The bright lamp, since it is brighter
    • The dim X-ray beam

  8. A green laser pointer is turned brighter. What changes about its photons, Pia?

    • Each one carries more energy
    • They change into ultraviolet
    • More arrive each second

  9. RadiologyInfo lists a chest X-ray at 0.1 mSv. About how much natural background radiation is that, Ren?

    • About 1 minute's worth
    • About 10 years' worth
    • About 10 days' worth

  10. Where does most people's yearly radiation dose of about 3 mSv come from, according to RadiologyInfo, Tala?

    • Microwave ovens
    • Radio broadcasts and phone towers
    • Natural background sources

  11. X-ray imaging doses are small. Why are they still kept as low as possible, Zee?

    • X-rays are slower than light
    • X-ray machines warm the whole room
    • The dose is kept to what is needed
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11th grade What different kinds of radiation do when absorbed worksheet – printable
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About this worksheet

What different kinds of radiation do when absorbed. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can find the energy of one photon, E = hf, in eV, and say that it rises with frequency.
  • I can place the ionizing line. The EPA lists radio waves, microwaves and visible light as non-ionizing, and X-rays and gamma rays as ionizing. I can explain that ionizing depends on each photon's energy, not on how bright a beam is.
  • I can describe what absorption does: microwaves and infrared warm (ΔT = Pt ÷ mc), visible light powers plants, and ultraviolet can cause sunburn, which sunscreen helps block.
  • I can compare imaging doses with natural background (a chest X-ray is about 10 days' worth) and check short published-style claims against these facts.

Standard: HS-PS4-4

Words to know

photon: One packet of electromagnetic energy

electron volt (eV): A tiny energy unit for single photons

ionizing: Able to knock electrons out of atoms (EPA)

non-ionizing: Not able to remove electrons; can warm or move molecules

millisievert (mSv): A unit for comparing radiation doses

Common mistakes

Your child divided. A photon's energy is Planck's constant × frequency: E = hf.

Your child left out the water's mass. Temperature rise = energy ÷ (mass × specific heat).

Your child divided the small dose by the large one. To count how many small doses fit in a large one, divide large by small.

Questions parents ask

What is the most common mistake with what different kinds of radiation do when absorbed?

Your child divided. A photon's energy is Planck's constant × frequency: E = hf.

Are these 11th 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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