The way we see things (Part 1)

Why is the cave fish does not have eyes?

• because there are bright lights in the cave so they don't need the eyes

• because there are dim lights in the cave so they don't need the eyes

• because thy not using eyes to see object, however they use their fins

• because there are no lights in the cave so they don't need the eyes

Our eyes have to receive _________ in order for us to see. It is also can not give out this thing.

• heat

• sound

• light

• magnetism

Why are we can not see clearly in the dark?

• because there is no light that enter our eyes.

• because there is bright light that enter our eyes.

• because we see objects using hands in the dark place and not our eyes.

• because our eyes doesn't work, it needs heat, and its too cold in the dark place to get heat up.

Object that gives out light is called as ___________

• light meter

• light sensor

• light source

• light ray

A man-made light source such as city lights is an example of ______________ light source.

• Natural

• Supranatural

• Artificial

• Super facial

Which one is not the natural light source in nature?

• 
• 
• 
• 

The main light source that we have in day time is the ________

• stars

• moon

• sun

• meteor

We can see the light source because the light from the light source ___________

• bounces to our eyes

• enters our eyes

• reflects to our eyes

• jumps to our eyes

We should not look directly to the bright light sources such as Sun because it can _________

• make our eyes change their colors

• damage our eyes and harm them

• cure our eyes astigmatism

• make our eyes fresh but if its too much it can burn them

The path in which light travels is called a __________

• light ray

• light beam

• light orbit

• light axis