Year 3 Light Worksheet - Beginner

Year 3 Light worksheet for Year 3 (Key Stage 2 / Year 3-6 (Ages 7-11)). Beginner level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•Key Stage 2 / Year 3-6 (Ages 7-11)•Lightbeginner

29 views

Light, Seeing and Shadows

Year 3 Science • Beginner • Ages 7–8

Name:

Date:

Score:

Instructions: Read each question carefully and use the clues in the worksheet. Write your answers in the boxes. Remember: we need light to see, and shadows form when an object blocks light.

How We See

Choose the best answer for each question. Think about where light comes from and how it reaches your eyes. Circle one answer for each question.

1. What do we need in order to see an object?

2. Which object makes its own light?

3. Why can you see a book in a lit room?

4. What might happen if you enter a completely dark room?

Reflection in Everyday Life

Complete each sentence with a suitable word or short phrase. The word bank gives you some useful science words. Use each idea to explain how light helps us see.

Word bank: reflects, mirror, smooth, eyes, light

1. A shiny surface can ___ light.

2. We can see our reflection in a clean ___.

3. Light enters our ___ so we can see.

4. A very ___ surface can make a clear reflection.

Sunshine Safety

Choose the safest answer each time. Sunlight is useful, but looking directly at the Sun can harm your eyes. Select one option for each question.

1. Which is a safe way to protect your eyes on a sunny day?

2. What should you do if sunlight is very bright while you are outside?

3. Which statement about the Sun is safest?

4. Why is it sensible to use shade on a very sunny day?

How Shadows Form

Use the word bank to complete each sentence. A shadow forms when an object blocks light. Read each sentence carefully and choose the word that makes it scientifically correct.

Word bank: light source, blocks, shadow, opaque

1. A lamp or the Sun can be a ___.

2. An object makes a shadow when it ___ light.

3. The dark shape made when light is blocked is a ___.

4. A solid object that does not let light pass through is called ___.

Shadow Changes

Read each situation and write what will happen to the shadow. Think about the positions of the light source and the object. Use the clue in each question to help you.

1. A torch shines on a toy. The toy is moved closer to the torch. What usually happens to its shadow on a wall?

2. A torch shines on a toy. The toy is moved closer to the wall while the torch stays still. What usually happens to its shadow?

3. During the day, the Sun appears in different places in the sky. What happens to the direction of a tree’s shadow?

4. A ball is placed between a lamp and a screen. What does the ball do to the light reaching the screen?

Light and Shadow Check

Choose one answer for each question. Use what you have learnt about light, reflections and shadows. Read all the choices before deciding.

1. Which object is most likely to make a clear reflection?

2. What must happen for an object to make a shadow?

3. Which statement about seeing in a dark place is correct?

4. What can make a shadow change direction during the day?

Answer Key

Activity 1: 1. light ; 2. a torch ; 3. Light from the room reaches your eyes after reflecting off the book ; 4. You may not see the objects clearly

Activity 2: 1. reflects ; 2. mirror ; 3. eyes ; 4. smooth

Activity 3: 1. Wear sunglasses with UV protection ; 2. Wear a hat and seek shade ; 3. Never look directly at it ; 4. It helps reduce exposure to strong sunlight

Activity 4: 1. light source ; 2. blocks ; 3. shadow ; 4. opaque

Activity 5: 1. It usually gets larger ; 2. It usually gets smaller ; 3. Its direction changes as the Sun appears to move across the sky ; 4. The ball blocks some light, making a shadow on the screen

Activity 6: 1. a polished mirror ; 2. It must block some light ; 3. We need light to reach our eyes ; 4. The Sun’s position in the sky changes