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Pressure
Floating and Sinking
Math Skills
Units
Forces
100
This is a substance that can change shape
What is a fluid
100
This is obtained when density is multiplied by the volume occupied by an object
What is the mass
100
A force of 20N exerted over an area of 10 sq. m will lead to this pressure
What is 2 Pa
100

Unit for Pressure

Pascal

100

Type of force exerted by objects that are touching.

contact force

200
This is the SI unit of pressure and this is the SI unit of force
What is Pascal (Pa) and what is Newton (N)
200
This is the force that acts opposite the force of gravity and makes an object feel lighter
What is the buoyant force
200
A force of 25 N exerted on a surface with an area of 5 sq. m will lead to this pressure
What is 5 Pa
200
Unit for area

m2

200

Type of contact force exerted by objects that opposes the motion of an object.

friction

300
Air pressure can be measured with this device
What is a barometer
300
According to this principle the buoyant force on an object is equal to this displaced by the object
What is the Archimedes' principle and is the weight of the fluid displaced
300
A force of 160 N is exerted over a surface area of 40 sq. m leads to this pressure.
What is 4 Pa
300

Unit for force

Newton

300

The type of force exerted by a string or rope.

Tension

400

This is what happens to atmospheric pressure as elevation increases and this is what happens to water pressure as depth increases

What is decreases and increases

400
This is how you can predict whether an object will float or sink in a fluid
What is by comparing densities
400
A substance with a mass of 12g and volume of 3 cc has this density
What is 4 g/cc
400

Unit for density

g/cm3 or g/ml

400
An upward force exerted by fluids.

buoyant

500
This is what produces atmospheric pressure and in a fluid that is not moving this is how pressure is exerted in all directions
What is the weight of air and it is equally exerted in all directions
500
If an object that floats on the surface of water displacing 10 cc of water, this is the mass of the object.
What is 10 g
500
A substance with a mass of 10 g and volume of 20 cc has this density
What is 0.5 g/cc
500

Unit for mass

kilogram

500

The type of force exerted by the Earth on all objects on its surface.

gravitational force