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ACSEE (Form 6) Position, Behaviours and Structure of the Earth — practice questions

Explore 9 free Position, Behaviours and Structure of the Earth questions in ACSEE (Form 6) Geography. Open each question or exercise to read its content, reference answers and available explanation.

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Position, Behaviours and Structure of the Earth questions and exercises with answers

Showing questions 1–9 of 9.

The lowest layer of the atmosphere is the:Read the answer and worked solution →The troposphere is thickest at the equator and thinnest at the poles, measuring about:Read the answer and worked solution →The environmental lapse rate describes how, in the troposphere, temperature:Read the answer and worked solution →The troposphere is the only layer supporting life largely because it holds about:Read the answer and worked solution →Climb the atmosphereRead the answer and worked solution →Order the atmospheric layersRead the answer and worked solution →Atmosphere bingoRead the answer and worked solution →The atmosphere, true or falseRead the answer and worked solution →Work out the temperature dropRead the answer and worked solution →

Worked practice questions

The lowest layer of the atmosphere is the:

  1. stratosphere
  2. mesosphere
  3. troposphere
  4. thermosphere
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Correct answer: C. troposphere

1. The atmosphere is classified into four layers by height, composition and temperature behaviour. 2. The troposphere is the lowest and the first of them. 3. Above it lie the stratosphere, then the mesosphere, then the thermosphere. 4. The troposphere is the only layer that supports life, and all weather occurs within it. 5. It holds about 75 per cent of the atmosphere's gases, along with dust and water vapour. _Source: NECTA ACSEE 2023 Geography 113/1, Question 6: Position, Behaviours and Structure of the Earth_

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The troposphere is thickest at the equator and thinnest at the poles, measuring about:

  1. 9 km at the equator and 17 km at the poles
  2. 50 km at the equator and 17 km at the poles
  3. 17 km at the equator and 9 km at the poles
  4. 17 km at the equator and 50 km at the poles
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Correct answer: C. 17 km at the equator and 9 km at the poles

1. The troposphere does not have a uniform depth over the whole Earth. 2. Stronger heating at the equator makes the air expand upwards, so the layer is deepest there at about 17 km. 3. At the poles the weaker heating leaves it shallower, about 9 km. 4. So the thickness runs from roughly 17 km down to 9 km moving from equator to pole. 5. The figure of 50 km marks the top of the stratosphere, not the troposphere. _Source: NECTA ACSEE 2023 Geography 113/1, Question 6: Position, Behaviours and Structure of the Earth_

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The environmental lapse rate describes how, in the troposphere, temperature:

  1. rises by about 0.6°C for every 100 m of ascent
  2. falls by about 0.6°C for every 100 m of ascent
  3. falls by about 6°C for every 100 m of ascent
  4. stays constant regardless of the altitude
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Correct answer: B. falls by about 0.6°C for every 100 m of ascent

1. Within the troposphere, temperature falls as altitude increases. 2. The rate of that fall is roughly 0.6°C for every 100 m climbed. 3. That figure is what the environmental lapse rate names. 4. It is a decrease, so any option describing a rise has the direction backwards. 5. In the stratosphere above, the pattern reverses and temperature increases with height. _Source: NECTA ACSEE 2023 Geography 113/1, Question 6: Position, Behaviours and Structure of the Earth_

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