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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 23 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.Yes, because it is old
  • B.Yes, because it is in the yard
  • C.No, it needs nothing and it does not grow
2.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
3.A ladybird lays eggs that hatch into baby ladybirds. What does that show?
  • A.Ladybirds are toys
  • B.Eggs never hatch
  • C.Living things make young like themselves
4.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
5.A daisy stays in one place all its life. Is it alive?
  • A.No, because it is small
  • B.No, because it stays still
  • C.Yes, it needs water, air and light, and it grows
6.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 changes shape
  • C.Yes, because it moves
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.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

LessonPrint · K-LS1-1 · Set 23 · free to copy for classroom use

Answer key — How Do We Know It Is Alive?

Set 23. Prints on its own sheet.

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

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