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Environmental Science Practice Tests

These Grade 11 Science practice tests examine ecosystems, populations, succession, nutrient cycles, climate change, pollution, renewable and nonrenewable resources, sustainability, conservation, environmental justice, and data analysis.

Skills covered

  • Analyzing ecosystems, food webs, limiting factors, succession, niches, biodiversity, and invasive species
  • Explaining carbon, nitrogen, and water cycles, greenhouse gases, albedo, ocean acidification, and climate feedbacks
  • Comparing energy resources, life-cycle impacts, sustainability, recycling, commons, and environmental justice
  • Evaluating climate mitigation and adaptation, conservation corridors, pollution, and resource trade-offs
  • Interpreting controls, sampling, correlation, causation, uncertainty, units, and environmental data

How to use these practice tests

Define the environmental system and time scale first. Identify the relevant evidence, distinguish correlation from causation, and consider trade-offs, uncertainty, and effects on future generations.

For more Grade 11 Science practice, return to the Grade 11 Science category.

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Grade 11 Environmental Science Practice Tests

Practice Grade 11 Science questions about ecosystems, nutrient cycles, climate change, pollution, energy resources, sustainability, conservation, and environmental data.

Choose the best answer. Identify the system boundary and scale, distinguish evidence from claims, and evaluate trade-offs, uncertainty, and long-term effects.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is the main process that removes carbon dioxide from the atmosphere?

Please select an answer first.

Correct answer: A

The correct answer is Photosynthesis.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Photosynthetic organisms use carbon dioxide to build organic molecules and release oxygen.
  3. Check scale and evidence: The correct answer is Photosynthesis.

Photosynthetic organisms use carbon dioxide to build organic molecules and release oxygen.

2. QuestionMultiple choice

What does cellular respiration do in the carbon cycle?

Please select an answer first.

Correct answer: B

The correct answer is It releases carbon dioxide as organisms obtain usable energy.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Respiration breaks down organic molecules and returns carbon dioxide to the atmosphere or water.
  3. Check scale and evidence: The correct answer is It releases carbon dioxide as organisms obtain usable energy.

Respiration breaks down organic molecules and returns carbon dioxide to the atmosphere or water.

3. QuestionMultiple choice

What is nitrogen fixation?

Please select an answer first.

Correct answer: C

The correct answer is Conversion of atmospheric nitrogen into forms organisms can use.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Certain bacteria convert nitrogen gas into ammonia or related compounds that enter biological nutrient cycles.
  3. Check scale and evidence: The correct answer is Conversion of atmospheric nitrogen into forms organisms can use.

Certain bacteria convert nitrogen gas into ammonia or related compounds that enter biological nutrient cycles.

4. QuestionMultiple choice

What can excess fertilizer runoff cause in lakes?

Please select an answer first.

Correct answer: D

The correct answer is Eutrophication and oxygen depletion after algal growth.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Nutrients can stimulate algal blooms; decomposition then consumes oxygen and may create hypoxic conditions.
  3. Check scale and evidence: The correct answer is Eutrophication and oxygen depletion after algal growth.

Nutrients can stimulate algal blooms; decomposition then consumes oxygen and may create hypoxic conditions.

5. QuestionMultiple choice

What is the role of transpiration in the water cycle?

Please select an answer first.

Correct answer: A

The correct answer is It moves water vapor from plant leaves to the atmosphere.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Plants release water vapor through stomata, contributing to atmospheric moisture and regional water movement.
  3. Check scale and evidence: The correct answer is It moves water vapor from plant leaves to the atmosphere.

Plants release water vapor through stomata, contributing to atmospheric moisture and regional water movement.

6. QuestionMultiple choice

What happens during condensation?

Please select an answer first.

Correct answer: B

The correct answer is Water vapor changes into liquid water.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Cooling air can cause water vapor to lose energy and form liquid droplets, contributing to clouds and precipitation.
  3. Check scale and evidence: The correct answer is Water vapor changes into liquid water.

Cooling air can cause water vapor to lose energy and form liquid droplets, contributing to clouds and precipitation.

7. QuestionMultiple choice

What is the largest long-term carbon reservoir among these?

Please select an answer first.

Correct answer: C

The correct answer is Sedimentary rocks and ocean sediments.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Carbon stored in rocks and sediments can remain for long periods, although weathering and human activity can mobilize it.
  3. Check scale and evidence: The correct answer is Sedimentary rocks and ocean sediments.

Carbon stored in rocks and sediments can remain for long periods, although weathering and human activity can mobilize it.

8. QuestionMultiple choice

What is a greenhouse gas?

Please select an answer first.

Correct answer: D

The correct answer is A gas that absorbs and re-emits some outgoing infrared radiation.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Greenhouse gases such as carbon dioxide, methane, and water vapor affect Earth's energy balance by absorbing infrared radiation.
  3. Check scale and evidence: The correct answer is A gas that absorbs and re-emits some outgoing infrared radiation.

Greenhouse gases such as carbon dioxide, methane, and water vapor affect Earth's energy balance by absorbing infrared radiation.

9. QuestionMultiple choice

What does albedo describe?

Please select an answer first.

Correct answer: A

The correct answer is The fraction of incoming radiation reflected by a surface.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Bright surfaces such as snow have higher albedo and reflect more incoming sunlight than dark surfaces.
  3. Check scale and evidence: The correct answer is The fraction of incoming radiation reflected by a surface.

Bright surfaces such as snow have higher albedo and reflect more incoming sunlight than dark surfaces.

10. QuestionMultiple choice

Why can deforestation increase atmospheric carbon dioxide?

Please select an answer first.

Correct answer: B

The correct answer is It removes carbon-storing biomass and can release stored carbon through decay or burning.

  1. Identify the environmental system: Determine the population, ecosystem, resource, pollutant, cycle, or climate process described in the question.
  2. Apply the environmental principle: Clearing forests reduces photosynthetic uptake and can transfer carbon from vegetation and soil to the atmosphere.
  3. Check scale and evidence: The correct answer is It removes carbon-storing biomass and can release stored carbon through decay or burning.

Clearing forests reduces photosynthetic uptake and can transfer carbon from vegetation and soil to the atmosphere.

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