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Grade 1 Light, Shadows & Materials Worksheet with Answers

Grade 1 (US) · Year 2 (UK) · Class 1 (India) · Science

Unit 2: Light & SoundLight & ShadowsNGSS 1-PS4-3

Why we need light to see, how shadows form, and transparent, translucent and opaque materials. This free early elementary worksheet has 15 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Light, Shadows & Materials

Grade 1 · Science

Score___ / 15

Name

Class

Date

Learning goal: Light & Shadows · NGSS 1-PS4-3

Directions: This worksheet has 3 parts. Read the instructions at the start of each part.

Example

Does light pass through a window: all, some or none?

Answer: all (it is transparent)

Part A

Label the diagram. Use the words in the box.

Word bank

shadowlight sourceobject
123
  1. 1
  2. 2
  3. 3
Part B

Match each clue to the right word. Write the letter in the box.

  1. 4Can you see in a completely dark room?
  2. 5What does a mirror do to light?
  3. 6What do we need to see things?
  4. 7What forms when an object blocks light?
  • ANo
  • BShadow
  • CLight
  • DIt reflects it
Part C

Write your answer on the line.

  1. 8

    Is clear plastic wrap transparent, translucent or opaque?

    TransparentTranslucentOpaque
  2. 9

    How could you make a shadow bigger?

  3. 10

    Name a light source.

  4. 11

    Is a wooden door transparent, translucent or opaque?

    TransparentTranslucentOpaque
  5. 12

    Does light pass through a book: all, some or none?

    AllSomeNone
  6. 13

    Why is the moon bright at night if it makes no light?

  7. 14

    Does light pass through wax paper: all, some or none?

    AllSomeNone
  8. 15

    Your shadow is long in the morning and short at noon. Why?

★ Challenge corner for fast finishers

I am the only planet known to have life. What am I?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/1/light_shadows

Answer key (click to show)
  1. 1.light source
  2. 2.object
  3. 3.shadow
  4. 4.A — no
  5. 5.D — it reflects (bounces) it
  6. 6.C — light
  7. 7.B — a shadow
  8. 8.transparent
  9. 9.move the object closer to the light
  10. 10.the sun, a lamp or a flashlight (any one)
  11. 11.opaque
  12. 12.none (it is opaque)
  13. 13.it reflects light from the sun
  14. 14.some (it is translucent)
  15. 15.the sun is low in the morning and high at noon
  16. ★Earth (challenge corner)

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How to use this worksheet

  • Keep it short: a few questions at a time works better than a whole page at once for young learners.
  • Read the questions aloud together if your child is still building reading confidence.
  • Check the answers straight after, while the thinking is still fresh, and praise effort as well as results.

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