MSS Carbon Cycle and Climate Change Unit 4 Test - Honors

The graph shows changes in CO₂ gas levels over time. Which human activity causes these changes?

• composting trash

• burning fossil fuels

• planting trees

• recycling metals

Tags

NGSS.MS-ESS3-4

Which of the following processes removes carbon or CO₂ from Earth's systems?

Groups:

(a) Adds Carbon or CO2

,

(b) Removes Carbon or CO2

• Photosynthesis

• Factories and Automobiles

• Decaying Organisms

• Ocean Absorption

• Animal Waste

Tags

NGSS.MS-LS1-6

The graph shows changes in levels of atmospheric carbon dioxide over time. Based on the graph, which statement about the data is true? Select two correct answers.

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

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

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

• Levels of atmospheric carbon dioxide fluctuate over time.

• Levels of atmospheric carbon dioxide are currently falling.

Which step is incorrect in the carbon cycle?

• Plants conduct photosynthesis and take in carbon dioxide from the air.

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

• Burning fossil fuels absorbs carbon dioxide from the air.

• Oceans come into contact with air right above it and absorb carbon dioxide from the air.

What is the primary role of photosynthesis in the carbon cycle?

• To release carbon dioxide into the atmosphere.

• To burn fossil fuels and release energy.

• To decompose organic matter.

• To convert carbon dioxide into glucose and oxygen.

Tags

NGSS.MS-LS1-6

What happens during the process of combustion in the carbon cycle?

• Carbon dioxide is converted into glucose.

• Organic materials are burned, and carbon dioxide is released.

• Decomposers break down organic material.

• Carbon dioxide is absorbed by plants.

Which process below accounts for carbon from organisms being returned to the soil?

• Respiration

• Decomposition

• Photosynthesis

• Combustion

Discuss the impact of deforestation on the carbon cycle and provide scientific reasoning to support your explanation.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-ESS3-4

Why is the carbon cycle important for maintaining healthy ecosystems?

• It ensures the balanced flow of energy and cycling of matter.

• It provides a continuous supply of nitrogen for plants.

• It releases harmful gases into the atmosphere.

• It prevents the formation of fossil fuels.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which student is most accurate about the reasons for the increase in carbon dioxide levels?

• Penelope

• Ezra

• Both students are correct

• Neither student is correct

Tags

NGSS.HS-LS2-5