Mass & Pressure

Question 1

What are 2 types of barometers?What are the main differences between them?

Answer 1

Mercury and AneroidMercury use a liquid to indicate changes in air pressure & aneroid do not

Question 2

How are Mass & Air Pressure related?

Answer 2

If there is more mass in a given volume of air, it will exert greater air pressure

Question 3

How are Mass and density related?

Answer 3

If there is more mass in a given volume of air, then the density is greater

Question 4

How do barometers work: why must there be a near vacuum inside the tube of a mercury barometer?

Answer 4

So that there is little air pressure inside the tube and the mercury can rise inside the tube

Question 5

Density

Answer 5

The amount of mass of a substance in a given volume

Question 6

Pressure

Answer 6

The amount of force pushing on an area

Question 7

Air Pressure

Answer 7

The pressure caused by the weight of a column of air pushing down on an area

Question 8

Barometer

Answer 8

An instrument used to measure changes in air pressure

Question 9

Aneroid Barometer

Answer 9

Measures changes in air pressure without using a liquid

Question 10

Altitude

Answer 10

Elevation above sea level

Question 11

Ozone

Answer 11

A form of oxygen that has 3 oxygen atoms in each molecule instead of the usual 2. Formed when lighting interacts with oxygen in the air

Question 12

Nitrogen

Answer 12

Most abundant gas in the atmosphere (3/4 of the air we breathe). Each molecule consists of 2 nitrogen atoms

Question 13

Oxygen

Answer 13

Second most abundant gas in the atmosphere (makes up less than 1/4 of the volume).Plants and animals take oxygen directly from the air and use it to release energy from their food