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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 25 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 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
2.How is a real fish different from a toy fish?
  • A.The toy fish is bigger
  • B.The real fish is shinier
  • C.The real fish needs water, food and air to stay alive
3.A tree grows new leaves every spring. What does that show?
  • A.It is alive and growing
  • B.It is a building
  • C.It is not alive
4.A daisy stays in one place all its life. Is it alive?
  • A.No, because it stays still
  • B.Yes, it needs water, air and light, and it grows
  • C.No, because it is small
5.A rock has been in the yard for a hundred years. Is it alive?
  • A.Yes, because it is old
  • B.No, it needs nothing and it does not grow
  • C.Yes, because it is in the yard
6.Which of these can grow and have young?
  • A.A rock
  • B.A teddy bear
  • C.A rabbit
7.A toy robot moves and beeps. Is it alive?
  • A.Yes, because it moves
  • B.Yes, because it makes a noise
  • C.No, it does not need food, water or air, and it cannot grow
8.A ladybird lays eggs that hatch into baby ladybirds. What does that show?
  • A.Living things make young like themselves
  • B.Ladybirds are toys
  • C.Eggs never hatch

LessonPrint · K-LS1-1 · Set 25 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 25. Prints on its own sheet.

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

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