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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 13 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.Yes, it needs water, air and light, and it grows
  • B.No, because it stays still
  • C.No, because it is small
2.A cloud moves across the sky and changes shape. Is it alive?
  • A.Yes, because it moves
  • B.No, it does not eat, breathe or have young
  • C.Yes, because it changes shape
3.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
4.A ladybird lays eggs that hatch into baby ladybirds. What does that show?
  • A.Ladybirds are toys
  • B.Living things make young like themselves
  • C.Eggs never hatch
5.How is a real fish different from a toy fish?
  • A.The real fish needs water, food and air to stay alive
  • B.The real fish is shinier
  • C.The toy fish is bigger
6.A seed looks like a tiny stone. How could you find out if it is alive?
  • A.Paint it
  • B.Plant it, water it and see if it grows
  • C.Shake it
7.A kitten drinks, eats and grows bigger. What does that tell you?
  • A.It is not alive
  • B.It is a toy
  • C.It is alive
8.Which of these can grow and have young?
  • A.A rock
  • B.A rabbit
  • C.A teddy bear

LessonPrint · K-LS1-1 · Set 13 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 13. 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.No, it needs nothing and it does not grow
  4. 4.Living things make young like themselves
  5. 5.The real fish needs water, food and air to stay alive
  6. 6.Plant it, water it and see if it grows
  7. 7.It is alive
  8. 8.A rabbit

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