Match the pictures to the descriptions.

• not a light source

• 
• light source

• 
• not a light source

• 

Select the correct light source to complete the sentence:

_________ sources are things in nature that give out their own light.

(a)  

• Natural light
• Artificial light

(a)   sources are produced or made by humans.

• Artificial light
• Natural light

Which two items will protect a person from sunlight?

• 
• 
• 
• 

Is this statement true or false?

Humans use their eyes to see

• True

• False

Is this statement true or false?

Humans can see without light

• True

• False

Is this statement true or false?

Mirrors are good reflectors of light.

• True

• False

Write one way that the Sun helps humans.

Choose a word to complete each sentence.

Shadows are formed when an ​ ​ (a)   object blocks light from a light source. When light bounces back from a surface, it is called ​ ​ (b)  

• opaque
• transparent
• reflection
• shadow

Match the types of materials to the definitions.

• does not allow light to pass through

• opaque material

• allows light to pass through

• translucent material

• allows some light to pass

• transparent material