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7Sci Chapter 19 Sec1

Forces In Fluid - Fluids & Pressure

What is fluid? any material that can flow and takes the shape of its container
What is pascal? the SI unit for pressure
What is pressure? the amount of force exerted in a given area
What does force divided by area equal? pressure
What is measure for 1 pascal? the force of one newton exerted over an area of one square meter
What is atmospheric pressure? pressure caused by the weight of the atmosphere
What is the percentage of gases found within 10 km of Earth's surface? 80 %
What is gravity? force that holds the atmosphere in place
How many newtons are pressing on every square centimeter of your body? 10
When does water pressure increase? when depth increases
When does water pressure and atmospheric pressure affect total pressure on objects? when the object is underwater
What does water pressure NOT depend on? the amount of fluid present
What is water about 1,000 times more dense than? air
What is density? the amount of matter in a given volume, or mass per unit volume
Which exerts more pressure, water or air? water, because it is more dense
What affects the shape of a bubble?
Created by: ndmsteach