What is the density of an object with a mass of 5g and a volume of 5cm^3?
1.0g/cm^3
100
What is the amount of force exerted per unit area?
Pressure
100
What is the upward force on an object?
What is buoyant force.
100
Amount of mass per unit volume of material.
What is density.
100
This is the formula for calculating density.
D=m/v
"Density equals mass divided by volume"
200
What is the density of an object with a mass of 2g and a volume of 4cm^3?
0.5g/cm^3
200
What is the force exerted per unit area by air particles?
What is atmospheric pressure
200
Why does an inflatable ball pop back up after it has been pushed into the water?
The water exerts an upward force on the ball.
200
You would like to measure the density of a material. What information do you need to know to determine density?
The mass and the volume of the object.
200
What two factors influence the mass of an object?
The object's size and the material the object is made of.
300
What is the density of an object with a mass of 2g and a volume of 5cm^3?
0.4g/cm^3
300
What would increase the pressure on a object?
What is decreasing the area where the force is applied, OR applying more force to the object.
300
What principle is this... The buoyant force on an object is equal to the weight of the fluid the object displaces?
What is Archimedes' principle.
300
What instrument measures the density of a fluid?
What is a hydrometer.
300
Materials that can flow and have no definite shape.
What are fluids.
400
What is the density of an object with a mass of 10.5g and a volume of 3cm^3?
3.5g/cm^3
400
What unit is used to measure pressure?
What are pascals.
400
Describe what happens as a balloon is filled with helium.
The density of the balloon becomes less than the density of the surrounding air so the buoyant force on the balloon is greater than the weight of the balloon so the balloon floats.
400
How would a hydrometer float in a less dense liquid (lower, higher, not float).
It will float lower in a fluid that is less dense.
400
If you put an ice cube in motor oil what will it do?
It will sink because it is more dense than the motor oil.
500
What is the density of an object with a mass of 0.5g and a volume of 4cm^3?
0.125g/cm^3
500
If you walk from the seashore to the top of a mountain what is true about the atmospheric pressure?
The atmospheric pressure will decrease as you walk up the mountain.
500
Describe Archimedes' principle.
The buoyant foce on an object is equal to the weight of the fluid the object displaces.
500
What does the density formula express?
The relationship between mass, volume, and density of an object.
500
Explain the relationship between buoyant force and depth.
The buoyant force is a result of increasing pressure at increasing depth.