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15
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How are density and buoyancy related?
An object less dense than the fluid it's in will float.
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15
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Present a real-world application of the principles of floating and sinking
ship design, submarine technology, hot air balloons, life jackets
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15
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Explain why a piece of wood floats but a nail sinks.
Wood is less dense than water, while a nail is denser.
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15
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What is Archimedes' Principle?
An object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced by the object.
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monster
Reset all scores!
Oops!
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gold
Win 50 points!
Okay!
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fairy
Take points!
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25
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banana
Go to last place!
Oops!
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eraser
Reset score!
Oops!
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rocket
Go to first place!
Okay!
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shark
Other team loses 15 points!
Okay!
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thief
Give points!
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25
15
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Give an example of an object that sinks.
A rock, a coin, a nail (any dense object)
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15
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Why does a ship made of iron float?
It's hollow, which increases its volume and decreases its overall density.
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15
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How can you make a heavy object like a rock float?
Attach it to a less dense material like a piece of cork or wood.
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15
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What is buoyancy?
The ability of an object to float in a fluid.
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15
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What is density?
The amount of mass per unit volume of a substance.
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15
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How does a submarine change its buoyancy?
It adjusts the amount of water in its ballast tanks.
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15
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Give an example of an object that floats.
A wooden block, a balloon filled with air, an empty bottle (any less dense object)
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eraser
Reset score!
Oops!
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gold
Win 50 points!
Okay!
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fairy
Take points!
5
10
15
20
25
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banana
Go to last place!
Oops!
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thief
Give points!
5
10
15
20
25
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magnet
Take 15 points!
Okay!
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fairy
Take points!
5
10
15
20
25
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thief
Give points!
5
10
15
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25
15
×
Why do some objects float higher in saltwater than in freshwater?
Saltwater is denser than freshwater, providing more buoyant force.
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