Vocabulary
Barometers
Demos
Calculating density
Altitude and Properties of air
100
The amount of mass in a given volume
What is density?
100
This measures the change in air pressure with a glass tube of mercury
What is a mercury barometer?
100
This demonstration proved that air pushes in all directions
What is Flip the jar upside down?
100
What is the density of an object with a mass of 45g and a volume of 5mL? Would it sink or float in water?
What is 9 g/mL. It would sink.
100
Is density higher or lower at high altitudes?
Density is lower in high altitudes
200
The amount of force pushing on an area
What is pressure?
200
How changes in air pressure are seen in a mercury barometer.
What is up (increasing) or down (decreasing)?
200
This demonstration proved that air has weight?
What is the triple beam balance balloon?
200
How density is calculated
What is density = mass / volume
200
Where is there more pressure sea-level or in high altitudes?
There is more pressure at sea-level
300
Elevation above sea level
What is altitude?
300
This measures changes in air pressure by using a metal coil, it does not use a liquid.
What is aneroid barometer?
300
This demonstration models high and low density
What is the square on the floor?
300
What is the density of an object with a mass of 2 g and volume of 4 mL? Will it sink or float in water?
What is .5 g/mL. It would float
300
What is density and air pressure like at high altitudes?
Air pressure and density is low (compared to sea-level) Think of the illustration where all the molecules are spread out.
400
The pressure caused by the weight of a column of air pushing down on an area
What is air pressure?
400
What unit of measurement is used when measuring air pressure?
What is millibars?
400
This demo proved that air takes up space
What is the Diving Bell?
400
How can you predict whether an object will sink or float by its mass AND volume?
If mass is less than volume it will float, if mass is greater than volume it will sink
400
What is air pressure and density like at sea-level?
Air pressure and density is high at sea-level (compared to higher altitudes) Think of the illustration where the molecules are close together
500
An instrument used to measure changes in air pressure
What is a barometer?
500
How changes in air pressure are seen in an aneroid barometer
What is in (increasing) or out (decreasing)
500
This demonstration showed what happens when pressure is not balanced
What is crush the can/bottle?
500
Why can't you predict whether something will sink or float if you only had its mass or only had its volume?
You can have two objects with the same mass and they can have different results, you can have two objects with the same volume and have different results.
500
Why is air pressure greater at sea level?
It has all the weight of the atmosphere above it pushing down. Like a stack of books, there is more pressure on the bottom of the pile compared to the top.
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