Heat Absorption

Shine a powerful flashlight on a variety of materials, and measure how quickly each material heats up. See how the light angle, light color, type of material, and material color affect heating. A glass cover can be added to simulate a greenhouse.

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LEARNING OBJECTIVES:

  • Observe that objects heat up when they absorb light.
  • Determine the relationship between the angle of the light source and heating.
  • Understand that an object has a certain color because it reflects light of that color.
  • Compare the heating of colored objects under different colors of light.
  • Measure the effect of placing a glass dome over a heated material.
VOCABULARY:
  • absorb, greenhouse, radiation, reflect, thermal energy

LESSON MATERIALS:

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