Buoyancy
Viscosity
Density
Gases
Surprise
100
Define buoyancy
What is A measure of the upward pressure a fluid exerts on an object
100
Define viscosity
What is a measure of a material's resistance to flow
100
Define density to a person that has no understanding of the concept
What is the amount of sand that can be put in a jar has a high density and the amount of crumpled paper that can be stuffed into the same jar will have a low density. You could say that a small jar filled with the same sand will have the same density. I don't think that they would understand a constant ratio or mass or volume
100
As the temperature of a gas increases the volume will increase proportionally and type of relationship
What is Charles' Law, direct relationship
100
What happens to a 2 liter balloon if heated from 100 K to 200 K
What is it doubles to 4 liters, Charles, a direct relationship
200
Define Archimedes' Principle
What is the force exerted on an object in a liquid is equal to the weight of the fluid displaced by the object.
200
List two things that have an impact on viscosity of fluids.
What is heat, molecule size(long or bulky), secondary forces
200
If polystyrene has a density of 1.1 g/ml, will it sink or float in water?
What is sink , you have memorized the density of water to be 1.00 g/mL at RT
200
As the pressure on a gas increases the volume will decrease and type of relationship
What is Boyle's Law , inverse relationship
200
A 40g rock is dropped into a graduated cylinder and moves the water from 40 mL to 60 mL. What is the density?
What is 40g/20 mL = 2g/mL
300
This occur when the buoyant force is equal to the weight of the object
What is Neutral buoyancy
300
TRUE/FALSE Corn syrup, oil and molasses are more viscous than water.
What is TRUE
300
How many of the following materials will sink in water 0.5g/mL, 0.9g/mL, 1.23g/mL, 0.88 g/mL, 2.5g/mL
What is two
300
If 5 liters of air at 20 kPa are pushed into 1 liter what is the new pressure?
What is 5 to 1, 5x20 = 100 kPa
300
TRUE/FALSE Density can be found from the slope of a linear curve of mass verses pressure.
What is FALSE, mass verses volume, READ carefully
400
A 50 gram object seems to be only 20 grams in water. How much buoyancy did the liquid exert on the object?
What is 30g, use 0.0098 N/g to get force
400
TRUE/FALSE The relationship between heat and viscosity of a liquid is direct. As the heat increases the viscosity increases.
What is False
400
If you have 2 kg of water, how many mL does it equal?
What is 2000 mL, WATCH UNITS 1.00 g/mL
400
As altitude increases what happens to atmospheric pressure?
What is It decreases as there are less molecules
400
The force acting on a unit area of a surface. English-PSI or kPa-SI unit.
What is Pressure, the particles collide against a wall or surface
500
A 2 ton ship displaces 1 ton of water does it sink or float? How much of a payload can it carry?
What is sinks, none because it sinks!
500
If you had two liquids and wanted to test which one is more viscous how would you conduct the experiment?
What is drop a marble or similar object and measure their speeds. The faster rate would be the less viscous material. Or pour the two in a similar fashion and see which will empty first.
500
Find the density of a 3 cm cube that has a mass of of 27 g.
What is 27g/3x3x3 cm3 = 1g/cm3
500
As a gas is heated explain what happens to its viscosity.
What is it increases as the particles hit each other more often and hinder the flow
500
Unit used for gravitational force between mass and the earth's gravity. Weight of buoyancy.
What is a Newton
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