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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 22 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 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
3.Which of these can grow and have young?
  • A.A teddy bear
  • B.A rabbit
  • C.A rock
4.What do all living things need?
  • A.Water and air
  • B.Shoes
  • C.Toys
5.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
6.A daisy stays in one place all its life. Is it alive?
  • A.No, because it is small
  • B.Yes, it needs water, air and light, and it grows
  • C.No, because it stays still
7.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
8.A toy robot moves and beeps. Is it alive?
  • A.Yes, because it makes a noise
  • B.Yes, because it moves
  • C.No, it does not need food, water or air, and it cannot grow

LessonPrint · K-LS1-1 · Set 22 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 22. Prints on its own sheet.

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

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