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Upthrust and Gravity
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Upthrust and Gravity Gravity is the pull of the earth on something
Upthrust is the push upwards of a liquid on something.
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Liquid Weight in Air (N) Weight in Liquid (N)
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Practical Measure the weight of an object in the air using a Newton meter. Write down the weight in the table. Now put the object into the water and measure its weight. Write down the weight in the table.
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Objects weigh less in water because the water pushes the object upwards. This force is called ______________ When __________ and ___________ are equal, the object will FLOAT. UPTHRUST UPTHRUST GRAVITY
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When gravity is bigger than upthrust, the object will _____
If upthrust is bigger than gravity, the object will move upwards, out of the water. SINK
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