What different kinds of radiation do when absorbed

Answer Key - Grade 11 Science Worksheet - Building Confidence

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

1. 1.

   Planck's constant is 4.135667696 × 10⁻¹⁵ eV·s. What energy does one photon of orange light at 5 × 10¹⁴ Hz carry, to the nearest hundredth, Ari?

   2.07 eV
2. 2.

   Planck's constant is 4.135667696 × 10⁻¹⁵ eV·s. What energy does one photon of violet light at 7.5 × 10¹⁴ Hz carry, to the nearest hundredth, Bo?

   3.1 eV
3. 3.

   Planck's constant is 4.135667696 × 10⁻¹⁵ eV·s. What energy does one photon of red light at 4.3 × 10¹⁴ Hz carry, to the nearest hundredth, Esme?

   1.78 eV
5. 4.

   In the wave diagram, which bands are on the ionizing side of the line, Jun?

   • Radio waves and microwaves
   • X-rays and gamma rays
   • Infrared and visible light
6. 5.

   In the wave diagram, what can ionizing radiation do that the other bands can't, Kira?

   Use the picture in question 4.

   • Knock electrons out of atoms
   • Warm things up
   • Travel at the speed of light
7. 6.

   What do microwaves do when food absorbs them, Milo?

   • They make it glow
   • They warm it
   • They make it radioactive
8. 7.

   A heat lamp shines infrared on a plate of food. What does the absorbed infrared do, Noah?

   • It warms the food
   • It ionizes the food
   • It cools the food
9. 8.

   What do green plants do with the visible light their leaves absorb, Pia?

   • Turn it into radio waves
   • Use its energy to make food
   • Store it as X-rays
10. 9.

    Which part of sunlight causes sunburn, Ren?

    • Ultraviolet
    • Radio waves
    • Visible light
11. 10.

    Why does bright indoor lamplight not cause sunburn, Zee?

    • Lamplight is too slow to reach skin
    • Lamps give off just radio waves
    • Its photons carry less energy than UV photons