Ice Age and Climate Change Quiz

What event marked the beginning of the current ice age?

• The isolation of Antarctica

• The formation of the Himalayas

• The rise of mammals

• The extinction of dinosaurs

Which of the following is NOT evidence of past glacial activity?

• Moraines

• U-shaped valleys

• Erratic boulders

• Volcanic ash layers

How did the ice age affect sea levels?

• Sea levels fluctuated randomly

• Sea levels rose significantly

• Sea levels remained constant

• Sea levels dropped significantly

What was a major environmental change during the ice age?

• Increase in volcanic activity

• Increase in ocean temperatures

• Expansion of grasslands

• Expansion of rainforests

Which region's ice mass remained relatively stable during the ice age?

• The Alps

• Siberia

• Greenland

• Antarctica

What geological event contributed to the cooling of the Northern Hemisphere?

• The formation of the Isthmus of Panama

• The breakup of Pangaea

• The eruption of Mount Vesuvius

• The creation of the Great Rift Valley

What are Milankovitch cycles?

• Changes in Earth's magnetic field

• Variations in Earth's orbit and tilt

• Shifts in ocean currents

• Fluctuations in solar radiation

How do positive feedback mechanisms affect climate trends?

• They have no impact on climate

• They stabilize climate conditions

• They amplify climate trends

• They reverse climate trends

What role does CO2 play in climate feedback mechanisms?

• It only affects ocean temperatures

• It has no effect on climate

• It amplifies both warming and cooling trends

• It acts as a cooling agent

What happens to methane hydrates during warming trends?

• They absorb CO2

• They release methane

• They remain stable

• They freeze