Question 1

Why does the position of the sun change throughout the day?

Accepted Answer

due to the rotation of the earth

Answer

the sun rises from the East and sets in the West.

Answer

due to the revolution of the Earth around the sun.

Answer

the sun is above the horizon

Question 2

Why do opaque objects form shadows?

Accepted Answer

They block the path of light rays

Answer

They reflect the light from the sun.

Answer

They bend the light that hit them

Answer

They absorb the light that hit them.

Question 3

Why is shadow shortest at noontime?

Accepted Answer

the sun is below the horizon

Answer

the position and length of the shadows change during the day

Answer

the sun is high above the horizon

Answer

the position of the sun changes throughout the day

Question 4

When are shadows formed? When light rays hit _____

Accepted Answer

opaque objects

Answer

transparent objects

Answer

translucent objects

Answer

hard objects

Question 5

Which is the source of heat and light on earth?

Accepted Answer

sun

Answer

planets

Answer

stars

Answer

moon

Question 6

Why is the shadow of a flagpole longest at 8:00 in the morning? It is because the light rays __________.

Accepted Answer

are slanted as they strike the ground during daytime

Answer

of the sun is vertically on top of the flagpole during daytime.

Answer

strike sideways of the flagpole

Answer

directly hit the flagpole

Question 7

At which time of the day can you have the shortest shadow?

Accepted Answer

12:00 noon

Answer

10:00 am

Answer

9:00 am

Answer

2:00 pm

Question 8

Why can’t we see our shadow during noon time?

Accepted Answer

the light rays strike directly above the objects

Answer

the sun rises and sets in the afternoon

Answer

the sunlight strikes the ground at nearly a right angle

Answer

the light rays are slanted as they hit the ground

Question 9

When does an object cast a longer shadow?

Accepted Answer

When light rays are sideways

Answer

When light rays are slanted

Answer

When light rays are blocked.

Answer

When light rays are on top

Question 10

How will you be able to determine the time even if you do not have a watch?

Accepted Answer

by observing changes in the position and length of shadows.

Answer

by observing the intensity of the sun’s rays every day.

Answer

by feeling the sun’s heat early morning outdoors.

Answer

by observing the position of the clouds as seen in the sky.

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