Exploring the Carbon Cycle and Its Four Spheres

The video provides an overview of the carbon cycle, explaining how carbon moves through Earth's spheres: atmosphere, biosphere, hydrosphere, and geosphere. It details the processes of carbon exchange, such as photosynthesis, decomposition, and fossil fuel burning. The teacher also discusses the importance of understanding these exchanges for the upcoming unit test and encourages students to review the material.

What is the atomic number of carbon on the periodic table?

• 6

• 10

• 8

• 4

Which of the following is NOT a form in which carbon can exist?

• Water

• Methane

• Limestone

• Gasoline

Which sphere of Earth includes all living things?

• Atmosphere

• Biosphere

• Geosphere

• Hydrosphere

What process allows plants to take in carbon dioxide from the atmosphere?

• Decomposition

• Combustion

• Photosynthesis

• Respiration

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following activities does NOT release carbon dioxide into the atmosphere?

• Photosynthesis

• Burning fossil fuels

• Volcanic eruptions

• Breathing

Tags

NGSS.MS-LS1-6

How does carbon enter the biosphere?

• Through photosynthesis

• By volcanic eruptions

• Through combustion

• By chemical weathering

Tags

NGSS.MS-LS1-6

What happens to carbon when marine life decomposes in the ocean?

• It forms fossil fuels

• It is released into the atmosphere

• It is absorbed by plants

• It is dissolved in the water

Which process is responsible for the formation of fossil fuels in the geosphere?

• Chemical weathering

• Volcanic eruptions

• Decomposition of plants and animals

• Photosynthesis

Tags

NGSS.MS-ESS3-1

What is the primary way carbon leaves the geosphere?

• Combustion of fossil fuels

• Photosynthesis

• Volcanic eruptions

• Decomposition

Which of the following is an example of carbon exchange between the geosphere and biosphere?

• Burning of fossil fuels

• Volcanic eruptions

• Photosynthesis

• Formation of coral reefs

Tags

NGSS.MS-LS2-3