Geography

Question 1

What is the difference between raster and vector data?

Answer 1

raster = pixels
vector = x/y coordinates

Question 2

what is the four major gases percentage contribution to greenhouse gases and their strength?

Answer 2

carbon dioxide = 75, 1
fluorogases = 2, 10000
methane = 17, 30
nitrous oxide = 6, 600

Question 3

2 Pieces Of Evidence to define the Anthropocene

Answer 3

• There must be evidence of long term changes to the Earth as a global system
• There must be a ‘marker’ of this event that can be identified and dated from digging down into rocks, oceans floor, sediment or glacial ice

Question 4

What is the greenhouse effect and enhanced greenhouse effect?

Answer 4

• the process through which heat is trapped near Earth’s surface by substances known as ‘greenhouse gases
• the disruption to Earth’s climate equilibrium caused by the increased concentrations of greenhouse gases has led to an increase in the global average surface temperatures.

Question 5

What results in the emission of carbon dioxide?

Answer 5

Burning of fossils fuels and the manufacturing of cement

Question 6

What results in the emission of fluorogases?

Answer 6

refrigeration, air-conditioning, insulating foams and aerosol propellants

Question 7

What results in the emission of methane?

Answer 7

agriculture, fossil fuels, and decomposition of landfill waste

Question 8

What results in the emission of nitrous oxide?

Answer 8

agriculture, particularly fertilized soil and animal waste

Question 9

What countries emit the majority of greenhouse gas emissions?

Answer 9

1. China
2. America
3. India
4. Russia
5. Japan

Question 10

How have the atmospheric levels of carbon dioxide changed?

Answer 10

The level of carbon dioxide has increased by 130 parts per million (about 50% )

Question 11

What are 5 pieces of evidence that demonstrate that the Earths climate is changing?