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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 12 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 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 old
  • C.Yes, because it is in the yard
2.A kitten drinks, eats and grows bigger. What does that tell you?
  • A.It is alive
  • B.It is not alive
  • C.It is a toy
3.What do all living things need?
  • A.Shoes
  • B.Water and air
  • C.Toys
4.Which of these can grow and have young?
  • A.A rabbit
  • B.A teddy bear
  • C.A rock
5.A seed looks like a tiny stone. How could you find out if it is alive?
  • A.Plant it, water it and see if it grows
  • B.Paint it
  • C.Shake it
6.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
7.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
8.A tree grows new leaves every spring. What does that show?
  • A.It is alive and growing
  • B.It is not alive
  • C.It is a building

LessonPrint · K-LS1-1 · Set 12 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 12. Prints on its own sheet.

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

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