Weather

Question 1

Weather

Answer 1

conditions on Earth’s atmosphere at a time/ place

Question 2

Composition of the air (5)

Answer 2

1. Nitrogen 2. Oxygen 3. Carbon dioxide 4. Water vapor 5. Trace gases

Question 3

Nitrogen

Answer 3

make up 78% used for plants

Question 4

Oxygen

Answer 4

make up 21% - animals take in plants give off

Question 5

Water Vapor

Answer 5

water as a gas in the air – form clouds

Question 6

Trace Gasses

Answer 6

argon and carbon dioxide in air but very small amount

Question 7

Properties of Air (2)

Answer 7

Density and Pressure

Question 8

Gas Particles

Answer 8

move fast and collide often

Question 9

Density definition/ equation/ ex.

Answer 9

of molecules in a given space D=mass/volume –
ex. Tennis and baseball

Question 10

Pressure

Answer 10

force of pushing on an area

Question 11

Measuring air pressure 2 types

Answer 11

1. Mercury barometer 2. Aneroid barometer

Question 12

How aneroid barometer works

Answer 12

compares pressure inside to outside - if high pressure= balloon goes down
if low pressure = balloon goes up

Question 13

Units for air pressure

Answer 13

millibars

Question 14

Altitude goes up= pressure will ____

Answer 14

go DOWN (less air molecules up there to push on each other)

Question 15

Altitude goes down = pressure will ____

Answer 15

go UP (more air molecules there to push on each other)

Question 16

Altitude goes up = density will ____

Answer 16

go DOWN (less # of molecules in the given space)

Question 17

Altitude goes down = density will _____

Answer 17

go UP (more air molecules in the given space)

Question 18

Layers of the atmosphere (starting at crust) 5

Answer 18

1. Troposphere 2. Stratosphere 3. Mesophere 4. Ionsphere 5. Exosphere

Question 19

Troposphere facts

Answer 19

living things and weather occur there

Question 20

Stratosphere facts

Answer 20

contains the ozone layer (O 3 )

Question 21

Mesosphere facts

Answer 21

protects Earth from meteoroids

Question 22

Ionsphere fact

Answer 22

part of the Thermosphere – charged particles causes Northern Lights

Question 23

Exosphere fact

Answer 23

furthest away – part of the Thermosphere – contains the satellites

Question 24

Examples of pollutants

Answer 24

carbon monoxide, nitrogen oxide, sulfuric acid

Question 25

Pollutants from natural resources
Pollutants from humans

Answer 25

fires, volcanoes, soil erosion, storms
burning fossil fuels & factory smoke

Question 26

Smog

Answer 26

fossil fuels burn and the gases trapped in the air

Question 27

Photochemical smog

Answer 27

todays problem – brown air – due to burning hydrocarbons/ nitrogen oxide & destroying ozone layer

Question 28

Acid Rain definition/ problem

Answer 28

harmful chemicals are burned as a gas collects in the water vapors of clouds & rains down – destroys statues and plants

Question 29

How are we trying to fix air quality

Answer 29

EPA made laws for burning fossil fuels and factories