This is the property of objects to be pushed up when in a fluid. (spelling counts)
What is "Buoyancy"
100
This single value will determine whether an object will float in water.
What is "density of the object"
100
This is the fluid we are immersed in right now.
What is "air"
OR
What is "the atmosphere"
100
When the air is blown into a balloon so that it is twice its previous size, the pressure in the balloon changes by this much.
What is "nothing" or "no amount" or "no change"
200
These are the units of pressure
What is "newtons / meters squared"
OR
What is "pascals"
200
This is the equation for buoyancy.
What is "buoyancy = density of fluid * gravity * volume of object immersed in fluid"
b = rho*g*V
200
A stone with a volume of 0.2 meters cubed and a density of 1234 kg / meters cubed is placed in an aquarium. This is the volume of the stone that will be submerged in the water when it comes to rest.
What is "0.2 meters cubed"
200
This is the approximate value of atmospheric pressure on the surface of the Earth in pounds per square inch
What is "14.7 lbs / square inch"
OR
What is "15 lbs / square inch"
200
When two balloons are blown up to the same size, one with helium and one with air, this balloon will experience the larger buoyancy force.
What is "neither balloon" or "they will experience the same buoyancy force"
300
This is the equation for pressure in a liquid.
What is "Pressure = density of fluid * gravity * depth (or height)"
P = rho * g * h
300
An object 2 meters below the surface of a lake has a buoyant force of 3 newtons. This is the buoyant force when the object is pushed down to 4 meters below the surface.
What is "3 newtons"
OR
What is "3 N"
300
A ball that has a volume of 0.76 meters cubed and a mass of 450 kg / meters cubed is placed in an aquarium.
This is the percent of that ball that will be submerged when the ball comes to rest.
What is "45%"
300
DAILY DOUBLE
This is what causes atmospheric pressure.
What is "the weight of all of the air or atmosphere sitting on top of you"
300
A piece of styrofoam is taken a meter below the surface of the pool. The buoyancy on the styrofoam does this as it floats to the surface.
What is "does not change"
400
This is the equation for pressure in a gas.
What is "Pressure = (number of particles * temperature of gas * R) / volume"
P = nTR/V
OR
PV=nRT
400
This is the reason for buoyancy.
What is "The pressure of the fluid at the bottom of the object is greater than the pressure of the fluid at the top of the object."
400
A ball with a volume of 1.2 meters cubed and a density of 870 kg/meters cubed is placed in an aquarium.
This is the volume of the ball that remains above water when it has come to rest.
What is "0.156 meters cubed"
400
Gasses will have different densities at different depths. Liquids will not. This is why.
What is "gasses are compressible while liquids are nearly incompressible"
400
This is the difference between the units of pressure in a liquid and the units of pressure in a gas.
What is "none" or "there is no difference"
500
This is the pressure of 2 mols of a gas at 320 Kelvin in a container that has a volume of 3 cubic meters.
(1mol = 6.02e23, and R = 8.3 J/mol*K)
What is "1.066e27 newtons/meters squared"
OR
What is "1.066e27 pascals"
500
This is the buoyant force on a fully submerged object with a density of 2500kg/meters cubed that is 50,000 leagues under a freshwater lake and has a volume of 0.7 meters cubed.
What is "6860 newtons"
OR
What is "6860 N"
500
A moose with a volume of 1.5 meters cubed and a mass of 1300kg falls into a lake. The moose immediately becomes paralyzed with fear.
This is the volume of the moose that remains above water when he comes to rest.
What is "0.2 meters cubed"
500
This is the buoyant force that the atmosphere exerts on a 68kg (about 150 lbs) person with a density of 990 kg / meters cubed. (Air has a density of about 1.3 kg / meters cubed)
What is "approximately 0.875 newtons" (about 0.2 pounds)