Put these in order from the smallest force to the biggest force: -a horse pulling a cart, -a girl lifting a book, -a train pulling wagons, -a bird picking up a leaf
a bird picking up a leaf, a girl lifting a book, a horse pulling a cart, a train pulling wagons.
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25
What are game / sport that you change the direction of a ball?
Cricket, Basketball, football (if you have different answer, your teacher will check your answer)
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25
Josh loves her garden slide. She finds that when she wears cotton clothes she goes faster than when she wears woollen clothes. Why?
Less friction between slide and cotton clothes than between slide and woolen clothes.
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boom
Lose 50 points!
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gift
Win 25 points!
Okay!
fairy
Take points!
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25
baam
Lose 25 points!
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25
Why is friction important?
walk, slide on a sheet of ice. brakes use friction to slow down and stop a moving car.
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25
How does friction affect speed?
more friction decreases speed
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trap
No points!
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seesaw
Swap points!
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shark
Other team loses 15 points!
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thief
Give points!
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25
Does this surface smooth or rough? Why?
Smooth! Smooth surfaces have much smaller bumps.
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20
What is the unit of measurement of force?
Newton
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25
This is a force that pulls everything to the ground.
Gravity
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boom
Lose 50 points!
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gold
Win 50 points!
Okay!
fairy
Take points!
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25
baam
Lose 25 points!
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25
Name the force that slows things down
Friction
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25
When do you need to apply more force? Pushing a heavy box on ice floor or grass?
Grass! Friction also makes it harder to push objects across rough surfaces. You need more force to push an object on a rough surface than on a smooth one.
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lifesaver
Give 20 points!
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magnet
Take 25 points!
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shark
Other team loses 20 points!
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banana
Go to last place!
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15
When I use elastic band, I can change its shape by .....
pulling
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20
Which surface creates the most friction with skateboard? (Grass. Wood, Stone)
