Matter and Energy

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Across
  1. 2. We measure it in grams (g) or kilograms (kg)
  2. 4. When objects get hotter, their volume increases
  3. 7. The space a substance occupies
  4. 8. There are many types, including thermal and light
Down
  1. 1. A computer, for example
  2. 3. It has two properties we can measure
  3. 5. An action that makes an object move or changes its shape
  4. 6. A type of simple machine that begins with "p"