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Science Grade K-1 Answer Key

Science: Keeping Earth Clean - Reduce, Reuse, Recycle

Simple ways to help take care of our planet

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Science: Keeping Earth Clean - Reduce, Reuse, Recycle

Simple ways to help take care of our planet

Science - Grade K-1

Instructions: Read each problem with a teacher or grown-up. Write or draw your answer in the space provided.
  1. 1

    Circle the item that can be recycled: banana peel, plastic bottle, dirty tissue.

    Look for the item made of plastic.

    The plastic bottle can be recycled if it is clean and put in the correct bin.
  2. 2

    You have a paper that is blank on the back. What is one way you can reuse it?

    You can reuse the paper by drawing or writing on the blank back side.
  3. 3

    Draw a line from each item to the best bin: apple core to compost, soda can to recycle, candy wrapper to trash.

    Food scraps can break down in compost.

    The apple core goes in compost, the soda can goes in recycling, and the candy wrapper goes in the trash.
  4. 4

    Which action helps reduce waste: using a lunchbox every day or using a new paper bag every day?

    Reduce means making less trash.

    Using a lunchbox every day helps reduce waste because it can be used again and again.
  5. 5

    A classroom has lights on, but no one is in the room. What should someone do?

    Someone should turn off the lights to save energy.
  6. 6

    Look at the picture of a park. Circle the things that do not belong on the ground.

    Trash should go in the right bin, not on the grass.

    Trash items, such as bottles, wrappers, and cans, do not belong on the ground.
  7. 7

    Which word means to use something again: reduce, reuse, or recycle?

    Reuse means to use something again.
  8. 8

    Mia brings a reusable water bottle to school. Is this a good choice for keeping Earth clean? Tell why.

    Think about using the same bottle many times.

    Yes, it is a good choice because a reusable water bottle makes less trash than many throw-away bottles.
  9. 9

    Color the recycling bin green and draw one thing that can go inside it.

    A clean paper, can, or plastic bottle can go inside a recycling bin.
  10. 10

    Sam sees a wrapper on the playground. What safe choice can Sam make?

    It is important to be safe when picking up litter.

    Sam can tell an adult or use clean hands or gloves to put the wrapper in the trash.
  11. 11

    Which item is better to use again: a cloth towel or a paper towel?

    A cloth towel is better to use again because it can be washed and reused.
  12. 12

    Draw one way your family can make less trash at home.

    Think about shopping, eating, or cleaning up.

    A good answer could show using a reusable bag, eating food instead of wasting it, recycling clean containers, or reusing paper.
  13. 13

    Look at the four items. Put an X on the item that should not go in the recycling bin: clean cardboard box, clean can, clean plastic bottle, leftover sandwich.

    The leftover sandwich should not go in the recycling bin because it is food waste.
  14. 14

    Why is it important to keep trash out of rivers, lakes, and oceans?

    Many animals live in water.

    It is important because trash can hurt animals and make the water dirty.
  15. 15

    Finish the sentence: I can help keep Earth clean by ____.

    A good answer could be: I can help keep Earth clean by recycling, reusing things, picking up litter safely, or making less trash.
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