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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 15 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.Plant it, water it and see if it grows
  • B.Paint it
  • C.Shake it
2.Which of these can grow and have young?
  • A.A rabbit
  • B.A teddy bear
  • C.A rock
3.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
4.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 in the yard
  • C.Yes, because it is old
5.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
6.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
7.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
8.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

LessonPrint · K-LS1-1 · Set 15 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 15. Prints on its own sheet.

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

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