//Atmosphere, Air And Ocean Currents

Question 1

What is the green house effect?

Answer 1

• Sun produces short wave energy that paces through the atmosphere and reaches the earth
• Earth surface returns long wave energy but finds it hard to get the CO2 back, so some of it stays

Question 2

What are the causes and effects of global warming?

Answer 2

Causes: fossil fuels, deforestation (increases CO2), methane (gas from household rubbish

Question 3

How does air move and what is the global air movements ?

Answer 3

Global air movement: unequal heating of the atmosphere due to latitude
Air moving: hot air goes down//cold goes around and up
Air pressure: high pressure goes up on the inside//low pressure goes down

Question 4

What is atmospheric pressure?

Answer 4

-pressure within crust of earth
Equator: low pressure
30 degrees: cold+ heavy = high pressure 
60 degrees: warm air from south+cool air from north= low pressure 
Poles: cool, heavy air= high pressure

Question 5

What are the causes of ocean currents?

What are the effects of warm and cool ocean currents?

Answer 5

Causes: rotation of earth, connection currents (equal heating), prevailing winds
Effects of warm: raises water (+8C Ireland) and air temperature on land, coasts are ice-free
Effects of cold: lowers water and air temperature, increases likelihood of ice

Question 6

What is accessing and descending air ?

Answer 6

Acceding air (low pressure) : strong winds blow to centre, more clouds, precipitation 
Descending air(high pressure) : little/no winds blow away from centre, no clouds, dry weather