Light- Year 3

Which of the following are examples of light sources? (Circle all that apply)

• The Sun

• A Torch

• A rock

• • The Moon

What do you call the dark shape formed when an object blocks light?

(a)  

If you put a toy in front of a torch, what happens to the light? Describe what you see.

What is the difference between natural and artificial light sources? Can you give an example of each?

Which of these is a good way to stay safe in the sunlight?

• Wear sunglassed

• Stare at the Sun

• Stay inside when it is sunny

• • Wear a thick coat

Which of the following is true about the Sun?

• • The Sun is a type of shadow.

• The Sun is only visible at night.

• The Sun is a source of light.

• The Sun is not important for light.

Can you describe one material that reflects light well and how you know it does?

How do shadows change when you move closer or further away from a light source?

• The shadow stays the same size.

• The shadow becomes smaller when you move closer and bigger when you move farther away.

• The shadow disappears when you move closer to the light.

• • The shadow becomes bigger when you move closer and smaller when you move farther away.

How could you plan an investigation to see how the size of a shadow changes with the distance from a light?

• Move the light source and object together, and measure the shadow size each time.

• Keep the light source in one place, change the distance to the object, and measure the shadow size.

• Change the light source only and measure the shadow size.

• Move the object and light source together, without measuring.

How does sunlight affect your skin, and why is it important to protect your skin from it?