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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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How is pressure different from force?
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pressure involves the area and force is the pull.
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What are two characteristics of fluids?
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stable is not
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State Archimedes' principle in your own words
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weight of displaced fluid
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What two forces determine whether an object floats or sinks?
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weight of the object and buoyant force.
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Why is it easier to float in salt water than in fresh water?
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Salt water is more dense.
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Why do helium-filled balloons rise in air?
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Helium is less than air
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Why is it easier to pull a submerged boat anchor to the surface than it is to lift it onto the boat?
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Buoyant force exerts lighter in the water than air.
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Three different liquids and two equal-size cubes are placed in a beaker as shown. Which of the objects has the greater buoyant force acting on it?
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Bottom one, greatest density more buoyant.
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Why do you have to crawl on ice in order to save someone?
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Your weight is a force that is bigger.
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Two containers filled with two types of gases. What is a way to discover which one is less than air?
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put them in balloons.
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Why do people with weak muscles therepist tell them they should work out in a swimming pool?
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Buoyant puts less strain on the muscles
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With such strongs winds during a hurricane where are the Bernoulli's principles?
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Low pressure outside the house and high inside the house
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hurricane
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