Earth's Feedback Systems

Earth's subsystem that includes all of the air that surrounds Earth.

• Atmosphere

• Biosphere

• Geosphere

• Hydrosphere

Tags

NGSS.HS-ESS2-6

Earth's subsystem that includes all of Earth's layers, rocks, minerals, and soil.

• Atmosphere

• Biosphere

• Geosphere

• Hydrosphere

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A process which regulates a system in which an event acts as both an input and output of the same system is called...

• feedback loop

• earth's system

• lithosphere

• interaction

Tags

NGSS.HS-ESS2-2

NGSS.HS-LS1-3

Which of Earth's spheres consists of the layers of gases surrounding our planet?

• geosphere

• atmosphere

• biosphere

• hydrosphere

97% of Earth's water is

• freshwater

• frozen water

• groundwater

• salt water

Tags

NGSS.MS-ESS2-4

A thermostat in a central heating system can determine the temperature of your living room. It switches the air conditioner on when the temperature increases to a predetermined level and shuts it off when it cools to another level. The room temperature remains within a comfortable level regardless of the temperature outside

• Positive Feedback

• Negative Feedback

Tags

NGSS.HS-LS1-3

Higher temperatures cause more evaporation which leads to more water vapor in the atmosphere. Water vapor is a greenhouse gas so will trap more heat so the atmosphere will warm more.

• Positive Feedback

• Negative Feedback

Tags

NGSS.HS-ESS2-2

As carbon dioxide levels in the atmosphere rise, the temperature of the Earth rises. As the Earth warms the rate of photosynthesis in plants increases, more carbon dioxide is therefore removed from the atmosphere by plants, reducing the greenhouse effect and reducing global temperatures.

• Positive Feedback

• Negative Feedback

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

As the Earth warms, ice cover melts, exposing soil or water. Albedo decreases (albedo is the fraction of light that is reflected by a body or surface). More energy is absorbed by the Earth’s surface. Global temperature rises. More ice melts.

• Positive Feedback

• Negative Feedback

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS2-4

As the Earth warms, upper layers of permafrost melt, producing waterlogged soil above frozen ground. Methane gas is released into the environment. The greenhouse effect is enhanced. The Earth warms, melting more permafrost.

• Positive Feedback

• Negative Feedback

Tags

NGSS.HS-ESS2-2