Energy

Objects that let the light pass through partially are...

• opaque

• translucent

• transparent

• clear

You see a shadow when...

• it is dark outside

• an object blocks the light

• you look in a mirror

• an object is transparent

Which is the main source of light and heat?

• 
• 

Which is the man-made source of light?

• 
• 

Hair dryer can dry hair because of

• sound energy

• light energy

• heat energy

The natural source of light is .........

• 
• 

Light travels in ...............

• a zig zag line

• circles

• a straight line

Objects that block the light and do not let any light to pass through are...

• opaque

• translucent

• transparent

• clear

Ethan wants to make a shadow on the wall in front of him. Which is the best way for Ethan to make the shadow?

• Ethan should put a lamp in front of him.

• Ethan should stand between the wall and a lamp.

• Ethan should turn off all of the lights in the room.

Some objects can produce both heat and light energy.

• True
• False
• Not sure