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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 10 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 seed looks like a tiny stone. How could you find out if it is alive?
  • A.Shake it
  • B.Plant it, water it and see if it grows
  • C.Paint it
2.A kitten drinks, eats and grows bigger. What does that tell you?
  • A.It is a toy
  • B.It is alive
  • C.It is not alive
3.A tree grows new leaves every spring. What does that show?
  • A.It is not alive
  • B.It is a building
  • C.It is alive and growing
4.A toy robot moves and beeps. Is it alive?
  • A.No, it does not need food, water or air, and it cannot grow
  • B.Yes, because it makes a noise
  • C.Yes, because it moves
5.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 is small
  • C.No, because it stays still
6.Which of these can grow and have young?
  • A.A teddy bear
  • B.A rabbit
  • C.A rock
7.How is a real fish different from a toy fish?
  • A.The real fish is shinier
  • B.The toy fish is bigger
  • C.The real fish needs water, food and air to stay alive
8.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

LessonPrint · K-LS1-1 · Set 10 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 10. Prints on its own sheet.

  1. 1.Plant it, water it and see if it grows
  2. 2.It is alive
  3. 3.It is alive and growing
  4. 4.No, it does not need food, water or air, and it cannot grow
  5. 5.Yes, it needs water, air and light, and it grows
  6. 6.A rabbit
  7. 7.The real fish needs water, food and air to stay alive
  8. 8.Living things make young like themselves

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