Earth Systems and Human Impact Flashcard

Front

What is solar energy?

Back

Solar energy is the energy harnessed from the sun's rays, which can be converted into electricity or heat.

Front

What is geothermal energy?

Back

Geothermal energy is the heat that comes from the sub-surface of the earth, which can be used for heating and electricity generation.

Front

What are the main barriers to using solar and geothermal energy?

Back

The main barrier is the high set-up cost associated with the technology and infrastructure needed.

Front

What is weathering?

Back

Weathering is the process by which water, wind, ice, and temperature changes break down rocks into smaller fragments called sediments.

Front

What is erosion?

Back

Erosion is the process by which sediments are transported from one location to another by natural forces such as water, wind, or ice.

Front

What is deposition?

Back

Deposition is the process by which sediments settle out of the transporting medium and accumulate in a new location.

Front

What is a positive feedback loop in the context of climate change?

Back

A positive feedback loop amplifies changes; for example, melting ice reduces albedo, leading to more heat absorption and further melting.

Front

What is the role of greenhouse gases in global warming?

Back

Greenhouse gases trap heat in the atmosphere, leading to an increase in global temperatures.

Front

What is permafrost?

Back

Permafrost is permanently frozen ground that, when thawed, can release methane, a potent greenhouse gas.

Front

What is an igneous rock?

Back

Igneous rock is formed from the cooling and solidification of molten rock (magma or lava).