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What the Pascal
Say It Like It Is
A Word Says It All
100
The density of a kilogram of iron is less than the density of 1 gram of iron.
F- the same as
100
A box sinks when placed in water. What could you change about the box to make it float? a. density b. atmospheric pressure c. temperature d. Archimedes’ principle
A- Density
100
A small child applies 500 N of force on an area of grass that is 250 m . What is the pressure applied by the child?
What is 2 Pa
100
Explain why a dry sponge will initially float when placed on the surface of water but will sink after a while.
Air holes in a dry sponge make sponge initially less dense than the water, when sponge absorbs water, its density increases and it sinks.
100
the attractive force between two masses
What is gravity
200
Pascal's principle explains the relationship between density and buoyancy.
F- Archimedes Principal
200
Density depends on ____. a. weight b. mass and volume c. mass d. volume
b- mass and volume
200
A boat applies 1,500 N of force on 150 m of water. What is the pressure exerted on the water?
What is 10 Pa
200
Explain how a ship made of materials that are much denser than water is able to float on water.
Cargo ships generally have large, wide bottoms allowing a greater amount of surface to be in contact with the water. If force is exerted over a larger area, the pressure against the water decreases.
200
The unit used to measure pressure.
What is Pascals
300
You can use a balance to measure the volume of a liquid.
F- Graduated cylinder
300
The ____ is a unit of force. a. pascal b. newton c. atmosphere d. kilopascal
b- Newton
300
Two birds are floating on 200 m of water. One bird is applying 500 N of force and the other 300 N of force. What is the combined pressure being exerted by the birds?
What is 4 Pa
300
Which would exert more pressure on the floor, standing flat-footed or standing on your toes?
Standing on your toes exerts more pressure on the floor.
300
Any substance that fills a space and is able to flow
What is a fluid
400
A person standing on his or her toes and the same person standing flat footed exert the same amount of pressure on the ground
F- Different amounts
400
Archimedes' Principle helps to explain the relationship between ____. a. kinetic energy and density b. pressure and density c. temperature and density d. buoyancy and density
D- buoyancy and density
400
A hot air balloon is applying 9,000 N of force to 150 m of air. What amount of pressure is it applying?
What is 60 Pa
400
You are trying to float in a swimming pool. Would it be better if you inhaled as much air as possible or exhaled as much air as possible?
It would be better to inhale as much air as possible to float in a pool. By filling your lungs with air, your body becomes less dense and therefore floats in water.
400
The upward force exerted by a fluid on any object in the fluid
What is buoyant force
500
A fish with a mass of 5 kg and swimming at a depth of 5 m experiences the same buoyant force as a fish with the same mass swimming at a depth of 10 m.
True
500
A cork is able to float on water because it is ____. a. a crystalline solid b. small in size c. equal in density to water d. less dense than the water
D- Less dense than water
500
A chair is applying 100 N of force to 50 m of grass. Molly sits down and increases the force by 300 N. What is the pressure being applied before and after Molly sits down?
What is 2 Pa and 8 Pa
500
A diver wearing all her equipment has a mass of 70 kg. The mass of the water she displaces is 78 kg. Will the diver sink or float?
The diver will sink.
500
The principal that states that the buoyant force acting on an object is equal to the weight of the fluid displaced by the object.
What is the Archimedes' Principle