Carbon Cycle and climate change

What effect does deforestation have on the amount of carbon in the atmosphere?

• It decreases the amount.

• It increases the amount.

• It has no effect on the amount.

Tags

NGSS.MS-ESS3-4

The Sun is the most important influence on Earth's climates. Suppose a meteor crashes into Earth's surface and sends tons of pulverized rock material up into the atmosphere. How does this event interfere with the amount of solar energy that reaches Earth's surface?

• It can block incoming solar energy and make the air cooler.

• It can block incoming solar energy and make the air warmer.

• It can attract more sunlight and make the daytime hours brighter.

• It can attract more sunlight and create more hours of daytime.

Carbon is present in all living things on Earth. It continuously cycles through Earth's systems through natural and human-caused processes. The figure shows the carbon cycle. Numbers 1 through 6 show different stops along the carbon cycle. Which step is incorrect?

• A. Plants conduct photosynthesis and take in oxygen from the air.

• B. Animals breathe in oxygen and release carbon dioxide into the air.

• C. Oceans come into contract with the air right above, absorbing carbon dioxide.

• D. Plants release oxygen into the air during respiration.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

When a volcano erupts, it releases water vapor into the air. Water vapor is considered a greenhouse gas. Why is this so?

• It helps to keep the temperature of Earth's atmosphere warm.

• It causes the temperature of Earth's atmosphere to become cold.

• It has no effect on the temperature of the atmosphere.

The graph shows changes in global greenhouse gas levels over time. Which statement describes the data in the graph?

• Levels of carbon dioxide are rising, and levels of nitrous oxide and methane have decreased.

• Levels of carbon dioxide and nitrous oxide are rising, and levels of methane have decreased.

• Levels of carbon dioxide, nitrous oxide, and methane have decreased.

• Levels of carbon dioxide, nitrous oxide, and methane are rising.

Tags

NGSS.MS-ESS3-5

The graph shows changes in levels of atmospheric carbon dioxide over time. Which statement about the data in the graph is true? Select 2 answers.

• A. Levels of atmospheric carbon dioxide are the highest in 400,000 years.

• B. Levels of atmospheric carbon dioxide are the lowest in 400,000 years.

• C. Levels of atmospheric carbon dioxide have remained steady over time.

• D. Levels of atmospheric carbon dioxide are currently falling.

Tags

NGSS.MS-ESS3-5

The graph shows sources of human-produced carbon dioxide over time. Which action would best help to reverse this trend?

• Burn less fossil fuels for energy

• Use more cement for construction.

• Ban forestry and other land uses.

• None of the above.

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-1

NGSS.HS-ESS3-5

NGSS.HS-ESS3-6

NGSS.HS-LS2-7

What happens to the amount of carbon dioxide after 2020 if the trends continue?

• Levels of atmospheric carbon dioxide will decrease.

• Levels of atmospheric carbon dioxide will increase.

• Levels of atmospheric carbon dioxide will not change.

• Levels of atmospheric carbon dioxide will increase, then decrease.

Tags

NGSS.MS-ESS3-4

Which pair lists the largest carbon remover and the largest carbon producer?

• factories/automobiles and ocean absorption

• animal waste and forest fires

• photosynthesis and decaying organisms

• precipitation and ocean absorption

Tags

NGSS.MS-LS1-6

The diagram compares the greenhouse effect with normal levels of carbon dioxide and increased levels of carbon dioxide. Drag and drop each caption into the correct box in the diagram labeled 1, 2, 3, and 4. Match the captions to the correct numbers in the diagram:

• More heat is trapped in the atmosphere

• More heat escapes into space

• Less heat escapes into space

• More heat is trapped in the atmosphere

• More heat escapes into space

• Less heat escapes into space

• Less heat is trapped in the atmosphere

• Less heat is trapped in the atmosphere

Tags

NGSS.MS-ESS3-5