Quiz about Vision and Light

Question 1

_______ is a form of energy that enables us to see things around us.

Accepted Answer

light

Answer

electric

Answer

sound

Question 2

Light brightened our world and makes things ____.

Accepted Answer

visible

Answer

possible

Answer

impossible

Question 3

______ is our main source of light.

Accepted Answer

the sun

Answer

The moon

Answer

the earth

Question 4

other sources of light such as _______________

Accepted Answer

torch, candle

Answer

fireflies, moon

Answer

moon and sun

Question 5

why can we see the things around us?

Accepted Answer

because the light bounce off an object

Answer

because the light bounce into sun

Answer

because our eyes reflect the light

Question 6

Light travels in ______ lines and in ____ directions.

Accepted Answer

straight, all

Answer

straight, one

Answer

spreading, all

Question 7

When light strikes an object with a ______ Surface, the surface reflects the light in the same direction.

Accepted Answer

smooth

Answer

rough

Answer

straight

Question 8

If the surface is rough, the light rays are reflected in ______ directions.

Accepted Answer

different

Answer

same

Answer

all

Question 9

the light reflects in ____ direction

Accepted Answer

different

Answer

same

Answer

all

Question 10

the light reflects in ___ directions

Accepted Answer

same

Answer

different

Answer

all

Question 11

Periscope comes from two Greek words, ______ and _____

Accepted Answer

peri and scopus

Answer

peri and scope

Answer

peri and scopes

Question 12

Peri means ______ and scopus means ____.

Accepted Answer

around and to look

Answer

round and to look

Answer

around and tell

Question 13

A______ is an instrument with a long tube containing a set of mirrors.

Accepted Answer

periscope

Answer

torch

Answer

submarine

Question 14

how do the periscope help the sailors inside the submarine?

Accepted Answer

to see things on the water surface even if they are below the water level.

Answer

to help the sailor to see behind them

Answer

to see things in the water

Question 15

When light hits object, it may be _____ through the object.

Accepted Answer

reflected or pass

Answer

blocked

Answer

stopped

Question 16

When light hits a __________ object, the light passes through it

Accepted Answer

transparent

Answer

translucent

Answer

opaque

Question 17

_______ objects allow only some light to pass through them. So, objects behind them appear blurred.

Accepted Answer

translucent

Answer

transparent

Answer

opaque

Question 18

_______ objects do not allow light to pass through them at all.

Accepted Answer

opaque

Answer

transparent

Answer

translucent

Question 19

A _____ is formed when light is blocked by an opaque object

Accepted Answer

shadow

Answer

light

Answer

thing

Question 20

example of transparent object

Accepted Answer

Question 21

example of translucent object

Accepted Answer

Question 22

example of opaque object

Accepted Answer

Question 23

When the light source is farther from the object., the shadow formed is ______ When the light source is closer to the object, the shadow formed is _____

Accepted Answer

smaller, bigger

Answer

bigger, smaller

Answer

same

Question 24

The ______ the distance between the object and the light source, the _____ the shadow formed.

Accepted Answer

greater, smaller

Answer

greater, bigger

Answer

bigger, bigger

Vision and Light

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