The solar system contains eight ......... and more than 200 .............
planets - moons
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15
The great gravity force of .......... keeps the eight planets In their fixed orbits.
the Sun
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banana
Go to last place!
Oops!
star
Double points!
Okay!
fairy
Take points!
5
10
15
20
25
thief
Give points!
5
10
15
20
25
15
The Sun is made up of superhot gases most of them are ...... and..........
hydrogen - helium
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10
Study the opposite figure, then choose the correct answer from those between brackets : 1. ...... has the largest mass. (The moon - The Sun - The Earth)
the sun
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25
What happens to ...? âĒ The gravity of the Sun if its mass decreases than it is now.
gravity of the Sun will decrease.
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10
Study the opposite figure, then choose the correct answer from those between brackets : 2. ...... has the smallest size. (The Sun -The Earth -The moon)
The moon
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25
Give reasons for :Atmosphere limits the using of some telescopes to see distant celestial bodies.
Because atmosphere allows some light waves to pass to the Earth and blocks others.
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25
Give reasons for : The Sun looks much larger to us than other stars.
Because the Sun is the closest star to Earth.
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15
The Sun produces ............ energy that warms the Earth
thermal
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20
The Earth is surrounded by ........ that allows some light waves to pass through it and blocks others.
atmosphere
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10
Q Study the opposite figure, then choose the correct answer from those between brackets : 3 ....... has the lowest gravity force. (The Sun - The Earth - The moon)
The moon
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lifesaver
Give 15 points!
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seesaw
Swap points!
Okay!
gift
Win 10 points!
Okay!
baam
Lose 15 points!
Oops!
trap
No points!
Oops!
seesaw
Swap points!
Okay!
gift
Win 20 points!
Okay!
banana
Go to last place!
Oops!
25
Give reasons for :Stars appear bright in the sky at night.
Because stars produce light
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15
Although the Sun is a ............ sized star it looks to us much larger.
