Energy from Food & the Sun · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Energy from Food & the Sun

Science · Organisms & Life Processes · ages 10-11
Name ______________________   Date ____________
  1. A rabbit can use sunlight to make its food in the same way grass does.

    Circle one:   True   False

  2. Where do green plants get the energy used in photosynthesis?

    • Sunlight
    • Minerals from soil
    • Water absorbed by roots
  3. Which statement describes what your body uses food energy for?

    • Growth and repair, but not movement or keeping warm
    • Growth, repair, movement, and keeping warm
    • Movement and warmth, but not growth or repair
  4. A fox eats a rabbit that ate grass. Which path traces this food energy from its light source to the fox?

    • Sun to grass to rabbit to fox
    • Sun to rabbit to grass to fox
    • Grass to sun to rabbit to fox
  5. In the energy path sun, grass, rabbit, fox, which living thing passes food energy directly to the rabbit?

    • The fox
    • The rabbit
    • The grass
  6. Jake runs in a race and later heals a scraped knee. What does food supply to power both jobs?

    • Water contained in his food
    • Stored food energy
    • Vitamins contained in his food
  7. A healthy green plant stays in complete darkness with enough water and soil. What happens if it remains there long enough?

    • It uses stored food, then weakens without light.
    • It replaces light energy with minerals taken from the soil.
    • It keeps making food by using water as its energy source.
  8. Mia says, "An orchard worker created the energy stored in this apple." Which explanation should replace her idea?

    • The orchard worker supplies food energy by watering the tree.
    • The apple tree gets its food energy from minerals in the soil.
    • The apple tree captures sunlight energy to make food.
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Answer key

For grown-ups. Fold this page away before handing over the rest.

Energy from Food & the Sun W1-mt_PYPs2yD2sn-s1

  1. False · Grass makes food using light energy. A rabbit gets food energy by eating; sunlight does not replace its food.
  2. Sunlight · Photosynthesis uses light energy to make sugars. Carbon dioxide and water supply materials; minerals do not replace light energy.
  3. Growth, repair, movement, and keeping warm · Growth, repair, movement and keeping warm all use food energy. Neither pair of jobs can be left out.
  4. Sun to grass to rabbit to fox · Grass captures light energy. Eating transfers food energy from grass to the rabbit and then from the rabbit to the fox.
  5. The grass · The rabbit receives food energy by eating grass. Grass is immediately before the rabbit in this path.
  6. Stored food energy · Movement and repair both need energy stored in food. Water and vitamins help the body work but do not supply food energy.
  7. It uses stored food, then weakens without light. · Without light, the plant cannot photosynthesize. Stored food may support it for a while, but those stores eventually run low.
  8. The apple tree captures sunlight energy to make food. · People care for crops, but plants capture light energy through photosynthesis and store energy in food.
Worksheet · LightMySky