easy · Enhanced ACT science

A student tests the hypothesis that 'darker colored objects absorb more heat.' She places a black t-shirt and a white t-shirt on a table under a 100W lamp for 20 minutes.

What measurement would provide the best evidence to test the dependent variable?

  1. The final temperature of each shirt.
  2. The distance of the shirts from the lamp.
  3. The mass of each t-shirt before heating.
  4. The total light intensity of the lamp.

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