Section 3.1 - Climate Change

Question 1

The ______ occurs because of the water vapour in the atmosphere

Answer 1

Natural greenhouse effect

Question 2

Human activity has had a large effect on the three other greenhouse gases M causing the ______

Answer 2

Enhanced greenhouse effect

Question 3

Greenhouse gases (4):

Answer 3

Carbon dioxide CO2
Methane CH4
Water vapour H2O
Nitrous oxide N2O

Question 4

Carbon dioxide has a global warming potential of ______ and a persistence of ______ years

Answer 4

1

50-200

Question 5

Methane has a global warming potential of ______ and a persistence of ______ years

Answer 5

23

10

Question 6

Nitrous oxide has a global warming potential of ______ and a persistence of ______ years

Answer 6

296

120

Question 7

______ (GWP): is a measure of a greenhouse gases’ relative ability to trap thermal energy in the atmosphere

Answer 7

Global warming potential

Question 8

______ ______ is used as the reference to which the other greenhouse gases are then compared

Answer 8

Carbon dioxide

Question 9

______ is how many years each greenhouse gas will remain in the atmosphere

Answer 9

Persistence

Question 10

Analysis of ice core samples (to give us an idea about the distant past) and atmospheric conditions have shown that the levels of all 3 greenhouse gases in earth’s atmosphere are ______

Answer 10

Increasing

Question 11

Since the ______ ______ in the late 18th century, the level of CO2 in the atmosphere has been increasing

Answer 11

Industrial revolution

Question 12

Any process that releases Carbon into the atmosphere is called a ______ ______

Answer 12

Carbon source

Question 13

Fossil fuels are formed from the ______ of living ______ material, so they contain a lot of Carbon, and when burned, they release Carbon dioxide and nitrous oxide into the atmosphere

Answer 13

Remains

Organic

Question 14

______ ______ also contributes to the level of greenhouse gases

Answer 14

Modern agriculture

Question 15

Forests are called ______ ______ because photosynthesis ______ Carbon dioxide from the atmosphere

Answer 15

Carbon sinks

Removes

Question 16

The size of earth’s carbon sinks have been steadily ______ because human’s need for fuel and land for agriculture and industrialization

Answer 16

Decreasing

Question 17

The combination of increased use of ______ ______ and the decrease in available ______ ______ has resulted in the level of atmospheric carbon dioxide to increase by about 32% over the last 200 years

Answer 17

Fossil fuels

Carbon sinks

Question 18

______ are another class of man-made chemicals that can ______ thermal energy in the atmosphere. They have a global warming potential of about 12,000

Answer 18

Halocarbons

Trap

Question 19

Scientists believe that human activity since the industrial revolution has led to ______ ______ (the overall increase in Earth’s average temperature)

Answer 19

Global warming

Question 20

More evidence of global warming:

1. Flowers in the northern hemisphere have begun to ______ earlier and earlier over the past century
2. The incidence of ______ weather events such as ice storms and floods have been on the rise
3. Snow cover in some regions has ______
4. The average level and temperature of the Earth’s oceans have been ______

Answer 20

Bloom
Extreme
Decreased
Increasing

Question 21

The ______ ______ ______ (GCM) reflects the world’s climate the best and it centres on the effects of changes that affect earth’s energy balance on thermal energy transfer un the atmosphere

Answer 21

General circulation model

Question 22

The Montreal Protocol of 1987

Answer 22

A

Question 23

The United Nations Framework Convention on Climate Change of 1994:

Answer 23

A

Question 24

The Kyoto Protocol of 1988:

Answer 24

A

Question 25

Stabilizing greenhouse gases:

Answer 25

A