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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 14 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.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
3.How is a real fish different from a toy fish?
  • A.The real fish needs water, food and air to stay alive
  • B.The toy fish is bigger
  • C.The real fish is shinier
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.What do all living things need?
  • A.Water and air
  • B.Toys
  • C.Shoes
6.A rock has been in the yard for a hundred years. Is it alive?
  • A.Yes, because it is in the yard
  • B.Yes, because it is old
  • C.No, it needs nothing and it does not grow
7.A tree grows new leaves every spring. What does that show?
  • A.It is not alive
  • B.It is alive and growing
  • C.It is a building
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 14 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 14. Prints on its own sheet.

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

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