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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 8 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.What do all living things need?
  • A.Toys
  • B.Water and air
  • C.Shoes
2.A seed looks like a tiny stone. How could you find out if it is alive?
  • A.Paint it
  • B.Shake it
  • C.Plant it, water it and see if it grows
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 old
  • C.Yes, because it is in the yard
4.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
5.Which of these can grow and have young?
  • A.A rabbit
  • B.A rock
  • C.A teddy bear
6.A ladybird lays eggs that hatch into baby ladybirds. What does that show?
  • A.Eggs never hatch
  • B.Living things make young like themselves
  • C.Ladybirds are toys
7.A tree grows new leaves every spring. What does that show?
  • A.It is a building
  • B.It is not alive
  • C.It is alive and growing
8.A cloud moves across the sky and changes shape. Is it alive?
  • A.No, it does not eat, breathe or have young
  • B.Yes, because it moves
  • C.Yes, because it changes shape

LessonPrint · K-LS1-1 · Set 8 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 8. Prints on its own sheet.

  1. 1.Water and air
  2. 2.Plant it, water it and see if it grows
  3. 3.No, it needs nothing and it does not grow
  4. 4.It is alive
  5. 5.A rabbit
  6. 6.Living things make young like themselves
  7. 7.It is alive and growing
  8. 8.No, it does not eat, breathe or have young

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