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Course: HIA International — Grade 7
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HIA International — Grade 7

Unit 1: Breathing and respiration

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Unit 2: Dissolving, solubility and chromatography

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Unit 3: Forces, motion and pressure

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Unit 4: Ecosystems

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Unit 5: Atoms, purity and climate

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Unit 6: Light and objects in space

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Unit 7: Nutrition, health and movement

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Unit 8: Energy changes and reactions of metals

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Unit 9: Magnetism and electromagnets

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Quiz

5.5 Atmosphere And Climate

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Atmosphere And Climate Checkpoint Earth and Space quiz: free practice for Cambridge Checkpoint Earth And Space 0893. Work through this Atmosphere And Climate Checkpoint Earth and Space quiz and get instant feedback on every answer. If you get stuck, review the 3.5 Atmosphere and climate lesson. More practice: Cambridge Checkpoint Earth And Space 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 43
  • Passing grade: B+
  • Time limit:
Start Quiz
1.
Carbon dioxide affects climate because it:
Cools the Earth
Traps heat in the atmosphere
Makes the Sun brighter
Blocks all sunlight
2.
The pie chart shows the gases in dry air, labelled P to S. Which gas is Q, and which process added most of it to the atmosphere?
Dr Dabour Hub Academy - figure 1
Nitrogen, mostly added by photosynthesis
Oxygen, mostly added by volcanic eruptions
Oxygen, mostly added by photosynthesis
Carbon dioxide, mostly added by respiration
3.
The diagram shows energy moving between the Sun, the Earth and the atmosphere. Which numbered arrow shows radiation that greenhouse gases have absorbed and then given out back towards the Earth?
Dr Dabour Hub Academy - figure 2
Arrow number 1
Arrow number 2
Arrow number 3
Arrow number 4
4.
The graph shows monthly CO2 levels. The overall trend is upwards, but the level drops for a few months every year. Which is the best explanation for the yearly drop?
Dr Dabour Hub Academy - figure 3
Respiration stops completely during the summer months
Volcanoes only erupt during the winter months
Factories burn more fossil fuel in the summer months
More photosynthesis in the growing season takes in CO2
5.
The diagram shows part of the carbon cycle, with arrows A to E. Which arrow shows a process that humans have greatly increased, upsetting the balance of the cycle?
Dr Dabour Hub Academy - figure 4
Arrow D, combustion
Arrow A, photosynthesis
Arrow C, decomposition
Arrow E, dissolving
6.
The graph shows the results of a fair test with two bottles under the same lamp. What is the best conclusion?
Dr Dabour Hub Academy - figure 5
Extra CO2 made bottle B cool down compared with bottle A
Air with extra CO2 warmed up more, as CO2 traps more energy
Both bottles warmed equally, so CO2 has no effect at all
Bottle A warmed more because air traps more heat than CO2
7.
The flow chart shows how Earth's atmosphere developed. Which event belongs in Stage 3?
Dr Dabour Hub Academy - figure 6
Humans burned fossil fuels and added CO2 to the air
Oxygen from volcanoes filled most of the atmosphere
Plants released nitrogen during photosynthesis
CO2 dissolved in the oceans and formed carbonate rocks
8.
Aria collected 400 cm³ of dry air in a gas syringe. Using the table, what volume of this sample is nitrogen?
84 cm³ of nitrogen
312 cm³ of nitrogen
78 cm³ of nitrogen
3.1 cm³ of nitrogen
9.
The table shows where the methane released by people in the country of Delmora comes from. Which single action would cut Delmora's methane emissions by the largest amount?
Stopping all rice growing
Halving the waste sent to landfill
Planting more trees in cities
Halving the number of cattle
10.
Omar makes a 300 km journey and returns the same way. Using the table, how much CO2 does he save by going both ways by train instead of driving alone?
13 kg of CO2
39 kg of CO2
78 kg of CO2
102 kg of CO2
11.
Noor sealed a CO2 sensor in each of three jars and recorded the readings shown. Which conclusion is supported by the results?
The plant released CO2 in the light and removed it in the dark
Light alone removes CO2 from the air, even with no plant
In light the plant removed CO2; in the dark it only released CO2
The plant stopped all respiration when it was in the dark
12.
The table shows a simple model of the carbon cycle. What happens to the amount of CO2 in the air each year, and why?
It rises by 5 units, due to burning and deforestation
It stays the same, as the cycle is always balanced
It rises by 130 units, as all added CO2 stays there
It falls by 5 units, due to extra photosynthesis
13.
The Hassan family want to cut their carbon footprint by at least 1000 kg of CO2 a year using only two actions from the table. Which pair works?
Solar panels and cycling to school
Solar panels and eating less beef
LED bulbs and eating less beef
Cycling and lowering the heating
14.
Students model the greenhouse effect by putting a thermometer in a closed glass box in sunlight. Which is a limitation of this model?
Sunlight cannot pass through the glass into the box at all
The box cannot warm up, so it shows no effect
The atmosphere has no solid lid; its gases absorb infrared
A thermometer cannot measure the temperature of air
15.
A CO2 sensor read 450 ppm in an empty classroom at 8:00. At 10:00, after 30 students had been in the room with the windows shut, it read 1400 ppm. What is the best explanation?
The students' breathing used up the CO2 in the room
The students breathed out CO2 made in respiration
Shutting the windows made new CO2 in the room
The sensor measures oxygen, which rose over time
16.
In a class demonstration, 100 cm³ of air was passed over hot copper, which removes oxygen. The volume fell to 79 cm³. What does this show?
About 79% was oxygen; the rest is mainly nitrogen
About 21% was oxygen; the rest is mainly nitrogen
About 21% was nitrogen; the rest is mainly oxygen
About 21% was CO2; the rest is mainly oxygen
17.
Methane is only a trace gas in the air. Why do scientists still worry about rising methane levels?
It is a strong greenhouse gas
It removes oxygen from the air we breathe
It destroys the ozone layer above the Earth
It is the main gas that makes up the air
18.
Which action would do most, in the long term, to reduce a country's enhanced greenhouse effect?
Banning aerosol cans that contain CFCs
Replacing coal power stations with renewable energy
Building more landfill sites for waste
Clearing forests to make room for farms
19.
Each gas is paired with a main source. Which pairing is correct?
Methane – cattle, rice fields and landfill
Oxygen – volcanic eruptions
Argon – respiration and burning
Carbon dioxide – only photosynthesis
20.
Each gas is paired with its approximate percentage in dry air. Which pairing is correct?
Oxygen – about 78%
Carbon dioxide – about 4%
Argon – about 0.9%
Nitrogen – about 21%
21.
Each human activity is paired with its effect on the atmosphere. Which pairing is correct?
Using renewable energy – adds CO2 from burning
Landfill sites – remove methane from the air
Deforestation – raises oxygen in the air
Planting trees – removes CO2 by photosynthesis
22.
Each process in the carbon cycle is paired with its effect on CO2 in the air. Which pairing is correct?
Respiration – removes CO2 from the air
Decomposition – adds CO2 to the air
Combustion – removes CO2 from the air
Photosynthesis – adds CO2 to the air
23.
Which term is described as: the process by which large established trees use a lot of carbon dioxide?
calcium carbonate
methane
photosynthesis
emissions
24.
Match the term to its correct meaning: deforestation
a sedimentary rock made of calcium carbonate
cutting down forests, which means less carbon dioxide is used in photosynthesis
a comparison used to explain, such as gases acting like a blanket around the Earth
what limestone consists of - it releases carbon dioxide when made into cement
25.
The total amount of carbon dioxide released because of a person's activities is called their _____.
greenhouse effect
carbon cycle
carbon footprint
ozone layer
26.
The Earth's first oceans formed when _____ in the early atmosphere condensed as the planet cooled.
carbon dioxide
nitrogen gas
water vapour
oxygen gas
27.
Over time, nitrogen built up to become the _____ gas in the atmosphere.
most common
least common
strongest greenhouse
most reactive
28.
In photosynthesis: carbon dioxide + water → glucose + _____.
carbon dioxide
oxygen gas
nitrogen gas
methane gas
29.
Cattle produce only oxygen in their intestines. - True or false?
True
False
30.
Power stations use no fossil fuels at all. - True or false?
True
False
31.
Carbon dioxide and methane act like a blanket around the Earth. - True or false?
True
False
32.
Oil and coal are fossil fuels. - True or false?
True
False
33.
Musa looks at the diagram and says: "The hole in the ozone layer is what traps heat and causes global warming." True or false?
Dr Dabour Hub Academy - figure 7
False – ozone absorbs UV; warming is from greenhouse gases
True – the ozone layer absorbs infrared from Earth
True – ozone is the main greenhouse gas in the air
False – ozone and greenhouse gases are the same layer
34.
Study the table. "As CO2 in the air increased, the global temperature also increased, which supports the idea that extra CO2 is causing warming." True or false?
True – the data prove CO2 is the only cause
False – the temperature fell as CO2 rose
False – the CO2 level did not change at all
True – both rose, which supports the idea
35.
Dry air is made mostly of oxygen. True or false?
True – about 78% of air is oxygen
True – oxygen is 100% of dry air
False – it is mostly carbon dioxide
False – it is about 78% nitrogen
36.
Mia says: "Nitrogen must cause most global warming, because it makes up most of the air." True or false?
True – the most common gas traps most heat
True – nitrogen absorbs infrared strongly
False – nitrogen makes up only 21% of air
False – nitrogen is not a greenhouse gas
37.
Burning fuels removes carbon dioxide from the atmosphere. True or false?
True – fires take CO2 in from the air
True – burning turns CO2 into oxygen
False – burning releases only oxygen
False – combustion releases CO2
38.
Plants take in CO2 for photosynthesis, but they also give out some CO2 through respiration. True or false?
True – plants respire all the time
False – plants never release any CO2
False – plants breathe in CO2 instead of O2
True – but only while it is light
39.
Clearing a forest by burning the trees increases the CO2 in the air in two ways. True or false?
False – burning trees gives out oxygen
True – burning adds CO2 and fewer trees remove it
False – trees have no effect on CO2 levels
True – but only if the land is used for rice
40.
CFCs from old fridges and aerosol cans damaged the ozone layer, and banning them is helping it recover. True or false?
True – the ban is helping it recover
False – CFCs made the ozone layer thicker
False – nothing has ever damaged ozone
True – and CFCs are the main cause of warming
41.
Without any greenhouse gases, the Earth would be far too cold for most living things. True or false?
False – Earth would be warmer without them
True – the natural effect keeps Earth warm
False – greenhouse gases have no effect
True – because they block all sunlight
42.
Water vapour is not a greenhouse gas because it comes from natural evaporation. True or false?
True – only gases made by humans trap heat
True – water vapour is just a type of cloud
False – water vapour is a greenhouse gas
False – but only because it is made by humans
43.
Most of the gases in Earth's very early atmosphere came from volcanoes. True or false?
True – mainly CO2 and water vapour
False – they came from photosynthesis
False – the early air was mostly oxygen
True – mainly oxygen and nitrogen
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Part of Unit 5: Atoms, purity and climate — see every lesson and quiz in this unit.
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