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15
×
Explain why scientists cannot watch the complete process of a star and planets forming.
The planet forming process takes a really long time.
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baam
Lose 20 points!
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shark
Other team loses 25 points!
Okay!
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rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
20
×
Aldy has mass 45 kg on Earth (g=10 N/Kg). What is his weight?
450 N
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15
×
There is no air in space. The space where there are no particles is called...
vacuum
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15
×
What is the force that acts to slow the spacecraft in the air around Earth, but does not act on the spacecraft in space?
air resistance
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15
×
The difference in depth of the water between high and low tides is _____
tidal range
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15
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The direction of the sun's gravitational force acting on the planets is always...
towards the sun
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15
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Seawater on the side of the Earth closest to the Moon experiences _____ (high tide or low tide)
high tide
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15
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How long the time difference between one high tide and the next high tide? approximately ...
12 hours
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20
×
What are the effects of tides
the harbours can only be used at certain times of the day, affect food chains, can be dangerous for small boats
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15
×
Name the force that can pull particles of dust and gas together in space.
Gravity
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trap
No points!
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gift
Win 15 points!
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fairy
Take points!
5
10
15
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25
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baam
Lose 10 points!
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10
×
The useful energy in the cooking process like in the picture above is to ______
heat the food
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banana
Go to last place!
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rocket
Go to first place!
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fairy
Take points!
5
10
15
20
25
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thief
Give points!
5
10
15
20
25
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heart
Other team wins 25 points!
Oops!
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magnet
Take 10 points!
Okay!
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rocket
Go to first place!
Okay!
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baam
Lose 25 points!
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15
×
How many times does hight tide happen in one day (24 hours) ?
Twice
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