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How Do We Know It Is Alive? is a free printable Kindergarten science worksheet on using needs, growth and young as evidence that something is alive, aligned to NGSS performance expectation K-LS1-1. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 16 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

How Do We Know It Is Alive?

K-LS1-1

NameDate

Circle the best answer.

1.A daisy stays in one place all its life. Is it alive?
  • A.No, because it is small
  • B.Yes, it needs water, air and light, and it grows
  • C.No, because it stays still
2.A cloud moves across the sky and changes shape. Is it alive?
  • A.Yes, because it changes shape
  • B.No, it does not eat, breathe or have young
  • C.Yes, because it moves
3.How is a real fish different from a toy fish?
  • A.The toy fish is bigger
  • B.The real fish needs water, food and air to stay alive
  • C.The real fish is shinier
4.Which of these can grow and have young?
  • A.A rock
  • B.A teddy bear
  • C.A rabbit
5.A tree grows new leaves every spring. What does that show?
  • A.It is a building
  • B.It is not alive
  • C.It is alive and growing
6.A kitten drinks, eats and grows bigger. What does that tell you?
  • A.It is not alive
  • B.It is alive
  • C.It is a toy
7.What do all living things need?
  • A.Toys
  • B.Shoes
  • C.Water and air
8.A rock has been in the yard for a hundred years. Is it alive?
  • A.No, it needs nothing and it does not grow
  • B.Yes, because it is in the yard
  • C.Yes, because it is old

LessonPrint · K-LS1-1 · Set 16 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 16. Prints on its own sheet.

  1. 1.Yes, it needs water, air and light, and it grows
  2. 2.No, it does not eat, breathe or have young
  3. 3.The real fish needs water, food and air to stay alive
  4. 4.A rabbit
  5. 5.It is alive and growing
  6. 6.It is alive
  7. 7.Water and air
  8. 8.No, it needs nothing and it does not grow

Last reviewed 2026-09-05. Aligned to K-LS1-1 of the Next Generation Science Standards.