Climate Change Effects and Feedback Loops Quiz

Why is a small increase in global temperature considered a significant issue?

• It directly increases the number of hurricanes.

• It has no significant impact on the environment.

• It leads to a rise in sea levels affecting coastal cities.

• It causes immediate weather changes.

What is the primary difference between the melting of icebergs and glaciers?

• Glaciers contribute to sea-level rise, icebergs do not.

• Neither contributes to sea-level rise.

• Icebergs contribute to sea-level rise, glaciers do not.

• Both contribute equally to sea-level rise.

How is the mass loss of glaciers measured from space?

• Using ground-based scales.

• By observing changes in satellite orbits due to gravity variations.

• Through direct sampling of ice.

• By measuring the temperature of the ice.

What role does thermal expansion play in sea-level rise?

• It causes the ocean to contract.

• It has no effect on sea levels.

• It only affects the temperature of the ocean.

• It causes the ocean to expand, contributing to sea-level rise.

What is the potential sea-level rise predicted by worst-case climate models in the next 100 years?

• 2 meters

• 1 meter

• 0.5 meters

• 0.1 meters

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

• A process that amplifies global warming effects.

• A process that reverses climate change.

• A process that reduces global warming.

• A process that has no impact on climate change.

How does melting permafrost contribute to climate change?

• It releases carbon dioxide.

• It releases methane, a potent greenhouse gas.

• It has no effect on climate change.

• It absorbs more sunlight.

What is an example of a negative feedback loop in climate change?

• Deforestation increasing carbon dioxide levels.

• Increased methane release from oceans.

• Melting ice reducing albedo.

• Increased cloud cover reflecting more sunlight.

How do warmer climates affect plant growth in terms of climate change?

• They have no effect on plant growth.

• They increase photosynthesis, absorbing more CO2.

• They cause plants to release more CO2.

• They reduce photosynthesis.

What is a sociological feedback loop related to climate change?

• Increased investment in renewable energy as temperatures rise.

• Decreased public awareness of climate issues.

• Increased fossil fuel consumption.

• Reduced interest in environmental policies.