9.5 (pt. 2) - Global Climate Change

What happens to marine ecosystems as sea levels rise?

• They dry out and shrink

• They expand into previously terrestrial areas

• They are replaced by freshwater ecosystems

• Sunlight reaches deeper areas of the ocean

Why must some fish species migrate due to climate change?

• To avoid predators

• To find colder water and maintain oxygen levels

• To find new breeding grounds

• Because salinity is increasing

What is the thermo-haline circulation often referred to as?

• Earth's greenhouse

• Ocean conveyor belt

• Polar jet stream

• Equatorial drift

What causes the sinking of water in the thermo-haline circulation?

• Warm and low-salt water

• Cold and high-salt water

• Warm and high-salt water

• Cold and low-salt water

Why might the thermo-haline circulation weaken with climate change?

• Increase in ocean salinity

• Addition of cold, fresh water from melting ice sheets

• Expansion of warm water currents

• Ocean temperatures becoming colder overall

What is the phenomenon called when the poles warm faster than other areas?

• Thermohaline suppression

• Polar amplilfication

• Arctic inversion

• Solar intensification

Why does land contribute more to polar warming than ocean?

• Land absorbs more heat than water

• Land reflects more sunlight

• Land has a lower specific heat than water

• Land radiates cold air

What feedback loop accelerates warming at the poles?

• Ozone depletion

• Ice-albedo feedback

• Carbon sequestration

• Solar radiation decrease

How does air pollution contribute to faster polar melting?

• Particulates block sunlight

• Particulates reflect sunlight away

• Soot lowers albedo of ice, causing more heat absorption

• Pollution causes more snowfall

Why is Arctic sea ice critical for polar ecosystems?

• It reflects CO2 back into space

• It acts like soil in a forest, providing habitat for algae

• It cools down ocean currents

• It prevents hurricanes from forming