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25
×
If Earth suddenly stopped spinning, would the length of a day become shorter or longer?
Much longer. One day would last about one year.
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×
baam
Lose 25 points!
Oops!
×
seesaw
Swap points!
Okay!
×
gift
Win 15 points!
Okay!
×
lifesaver
Give 15 points!
Oops!
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thief
Give points!
5
10
15
20
25
×
star
Double points!
Okay!
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shark
Other team loses 20 points!
Okay!
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banana
Go to last place!
Oops!
20
×
Why do we see lightning before hearing thunder?
Light travels faster than sound
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20
×
Why do high heels create more pressure than sneakers?
Smaller contact area.
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lifesaver
Give 10 points!
Oops!
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star
Double points!
Okay!
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gift
Win 20 points!
Okay!
×
banana
Go to last place!
Oops!
25
×
Why is the astronaut floating?
Continuous free fall around Earth.
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20
×
Why can't we hear sound in space?
There is no medium (air) for sound to travel through.
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25
×
What is the unit of work?
Joule (J).
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20
×
If gravity suddenly doubled, what would happen to your weight?
Your weight would double.
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25
×
If the Sun suddenly became a black hole of the same mass, what would happen to Earth's orbit?
Earth would continue orbiting almost exactly the same way. Gravity depends on mass, not whether the object is a star or black hole.
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25
×
A meteor enters Earth's atmosphere and starts glowing red-hot. Where does the heat energy come from?
Kinetic energy is converted into heat due to friction and compression of the air.
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15
×
What force pulls objects toward Earth?
Gravity.
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heart
Other team wins 25 points!
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rocket
Go to first place!
Okay!
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fairy
Take points!
5
10
15
20
25
×
lifesaver
Give 5 points!
Oops!
25
×
Why doesn't the Moon fall onto Earth if gravity is pulling on it all the time?
The Moon is moving sideways fast enough to stay in orbit around Earth.
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20
×
Why do football players wear cleats?
To increase friction with the ground.
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×
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