Understanding Ice Ages and Their Causes

Which of the following ice ages is known as the first snowball Earth event?

• Karoo

• Andean-Saharan

• Heronian

• Cryogenian

What is a major factor that affects the distribution of solar radiation on Earth?

• Greenhouse gas levels

• Volcanic eruptions

• Earth's tilt and orbit

• Ocean currents

Which of the following is NOT a cause of ice ages mentioned in the video?

• Changes in Earth's orbit

• Decreasing greenhouse gases

• Increased volcanic activity

• Increased solar output

How do volcanic eruptions contribute to cooling in the short term?

• By blocking sunlight with ash and aerosols

• By releasing greenhouse gases

• By increasing solar radiation

• By altering ocean currents

What role did cyanobacteria play in historical ice ages?

• They increased atmospheric CO2

• They decreased atmospheric CO2

• They caused volcanic eruptions

• They altered Earth's orbit

What geological event contributed to the cooling during the Andean-Saharan Ice Age?

• The isolation of Greenland

• The breakup of Pangaea

• The shifting of Gondwana over the South Pole

• The formation of the Himalayas

What is a common theme in the causes of historical ice ages?

• Increased volcanic activity

• Decreased atmospheric carbon

• Decreased ocean circulation

• Increased solar output

What was a significant trigger for the modern Quaternary Ice Age?

• The breakup of Rodinia

• The isolation of Antarctica

• The formation of coal swamps

• The increase in solar output

What is the primary cause of the interglacial cycles during the modern Ice Age?

• Increased solar output

• Tectonic shifts

• Changes in Earth's orbit

• Volcanic eruptions

How did the connection of North and South America affect the modern Ice Age?

• It increased atmospheric CO2

• It decreased solar radiation

• It altered ocean circulation

• It increased volcanic activity