The way we see things (part 2)

Why is the Moon is NOT a light source?

• Because it is only reflects the Sunlight and not its own light.

• Because it is shines bright at night.

• Because it is not a star.

• Because it is not changing its color through out the time.

The light of the Moon is comes from the light of the ______

• Meteor

• Satelitte

• Asteroid

• Sun

An object can reflect the light better if it is has a ____________

• rough surface

• smooth surface

• slimy surface

• dry surface

Even though paper looks smooth but it can not reflect light as good as glass, this thing happens because actually paper _________

• have a smooth surface

• have a rough surface

• have a slimy surface

• have a dry surface

To be reflected well, light should be reflected in the _________ direction

• one

• different

• same

• all

On the rough surface, light is reflected in ___________ direction

• one

• different

• same

• all

The picture shows surfaces of 3 (three) objects. In order from left to right, there are Paper, Cement, and Glass. Which one will reflects the light better than the other?

• Paper

• Cement

• Glass

• All of them

Mirror can reflect the light very clear, that is why it becomes so useful, to prevent traffic accident we can use ____________ (choose from the picture).

• 
• 
• 
• 

Mirror is also used by Submarine to observe the surface of the ocean when they are submerged. What is the name of the tools that it used?

• telescope

• microscope

• periscope

• binocular

How many mirrors that we used in a simple periscope and how many degrees we should put them in the tube so it will work?

• 2, 45

• 45, 2

• 2, 2

• 45, 45