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Course: Alhussan Biology — Stage 9
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Alhussan Biology — Stage 9

Chapter 9: Plants and Photosynthesis

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Chapter 10: Excretion in Humans

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Chapter 11: Human Genetics and Development

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Chapter 12: The Carbon Cycle and Climate Change

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Chapter 13: Variation and Natural Selection

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Quiz

Biology 12.6 Chapter 12 Review: The Carbon Cycle and Climate Change — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Sea level rise since 1900. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
2.
A forest of 1000 trees absorbs 25 kg each per year. Total in tonnes?
250 t
40 t
25 t
25,000 t
3.
CO2 rose from 320 to 420 ppm. Calculate the percentage increase.
24%
31%
100%
131%
4.
A family emits 800 kg of CO2 a month. How much in a year in tonnes?
96.0 t
66.7 t
9.6 t
9600.0 t
5.
Carbon stored (billion t). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
6.
CO₂ has risen from about 280 ppm to over:
300 ppm
1000 ppm
28 ppm
420 ppm
7.
Carbon dioxide in the atmosphere. At what value of "Year" is "CO2 (ppm)" greatest?
Dr Dabour Hub Academy - figure 3
2000
1960
2010
2020
8.
Which statement is NOT correct?
Glaciers are shrinking.
Photosynthesis removes carbon dioxide from air.
Climate models predict a range of futures.
Temperature has fallen since 1900.
9.
A family emits 1200 kg of CO2 a month. How much in a year in tonnes?
100.0 t
14400.0 t
14.4 t
144.0 t
10.
Carbon dioxide in the atmosphere. What is the value of "CO2 (ppm)" when "Year" is 1960?
Dr Dabour Hub Academy - figure 4
371
338
319
391
11.
Leaves decayed from 50 g to 20 g. Calculate the percentage lost.
60%
30%
40%
150%
12.
Which is the correct definition of “Photosynthesis”?
Cutting down large areas of forest.
Measures what it is meant to measure.
Plants using light to turn carbon dioxide and water into glucose.
A one-sided influence on results.
13.
CO2 rose from 280 to 410 ppm. Calculate the percentage increase.
146%
32%
46%
130%
14.
CO2 rose from 320 to 410 ppm. Calculate the percentage increase.
90%
28%
128%
22%
15.
CO2 rose from 300 to 420 ppm. Calculate the percentage increase.
120%
140%
40%
29%
16.
Which is the correct definition of “Deforestation”?
Cutting down large areas of forest.
An organism that eats other organisms.
Energy from sources that will not run out.
Unusually severe events like floods and heatwaves.
17.
Sea level rise since 1900. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
18.
Sea level rise since 1900. At what value of "Year" is "Rise (cm)" smallest?
Dr Dabour Hub Academy - figure 6
1940
1900
2000
2020
19.
Leaves decayed from 60 g to 25 g. Calculate the percentage lost.
42%
140%
35%
58%
20.
Use the carbon cycle diagram. Which TWO arrows add CO₂ to the air from living things?
Dr Dabour Hub Academy - figure 7
Animals → CO₂ and Decomposers → CO₂
CO₂ → Plants and Plants → Animals
Plants → Decomposers and Animals → Decomposers
Fossil fuels → CO₂ only
21.
Which statement is correct?
Oceans become more alkaline with CO2.
Deforestation lowers CO2.
Oceans absorb CO2 and become more acidic.
Temperature has fallen since 1900.
22.
Which is the correct definition of “Carbon sink”?
A store that absorbs more carbon than it releases.
A substance containing carbon, e.g. glucose or protein.
A greenhouse gas from cattle and rice fields.
A statement of what is expected to happen.
23.
Sea level rise since 1900. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 8
"Rise (cm)" decreases as "Year" increases
"Rise (cm)" rises to a peak at 2020, then falls
"Rise (cm)" stays the same
"Rise (cm)" increases as "Year" increases
24.
Which term matches this definition? “Long-term change in weather patterns.”
Trend
Climate change
Feedback
Climate model
25.
Which term matches this definition? “Fuel formed over millions of years from dead organisms.”
Fossil fuel
Renewable energy
Industrial Revolution
Causation
26.
Sea level rise since 1900. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
27.
Which is the correct definition of “Combustion”?
A huge mass of land ice, e.g. Greenland.
Burning a fuel in oxygen.
A store that absorbs more carbon than it releases.
Gives similar results when repeated.
28.
Which is the correct definition of “Respiration”?
An organism that breaks down dead material.
Release of energy from glucose, giving out carbon dioxide.
A factor that can change.
One variable directly causing a change in another.
29.
CO2 rose from 300 to 400 ppm. Calculate the percentage increase.
133%
25%
33%
100%
30.
Which statement is NOT correct?
Glaciers are shrinking.
Evidence comes from thermometers, satellites and ice cores.
Correlation proves causation.
Decomposers release carbon from dead organisms.
31.
Carbon stored (billion t). Which has the smallest value?
Dr Dabour Hub Academy - figure 10
Plants
Atmosphere
Soil
Oceans (surface)
32.
Carbon dioxide in the atmosphere. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 11
A
B
C
D
33.
A forest of 500 trees absorbs 20 kg each per year. Total in tonnes?
100 t
10,000 t
25 t
10 t
34.
Carbon stored (billion t). What is the total of all the values?
Dr Dabour Hub Academy - figure 12
2787
3098
1204
3409
35.
Dead organisms buried for millions of years form:
Glaciers
Volcanoes
Topsoil
Fossil fuels
36.
Carbon dioxide in the atmosphere. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
37.
Which term matches this definition? “A store that absorbs more carbon than it releases.”
Carbon sink
Feeding
Deforestation
Variable
38.
Sea level rise since 1900. What is the value of "Rise (cm)" when "Year" is 2000?
Dr Dabour Hub Academy - figure 14
18
0
13
27
39.
Carbon in food passes along ____.
power lines
food chains
rivers only
rocks
40.
Methane comes from cattle and ____.
glaciers
wind farms
rice fields
solar panels
41.
Climate models predict a ____ of futures.
nothing
range
single value
random
42.
Respiration and combustion ____ CO2.
freeze
hide
remove
add
43.
True or false? Correlation proves causation.
True
False
44.
True or false? Climate models give one exact value.
True
False
45.
True or false? Renewable energy cuts emissions.
True
False
46.
True or false? Extreme weather is becoming more frequent.
True
False
47.
True or false? Fossil fuels are coal, oil and natural gas.
True
False
48.
True or false? Temperature has fallen since 1900.
True
False
49.
True or false? Decomposers absorb CO2.
True
False
50.
True or false? CO2 rose from about 280 ppm to over 410 ppm.
True
False
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Part of Chapter 12: The Carbon Cycle and Climate Change — see every lesson and quiz in this unit.
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