Natural Factors for Glacial Periods

What are Milankovitch cycles?

• Ocean current patterns

• Atmospheric pressure systems

• Variations in Earth's orbit and tilt

• Mountain building processes

Answer explanation

Milankovitch cycles refer to variations in Earth's orbit and tilt, which affect climate patterns over long periods of time.

Which volcanic event is known to impact global temperatures?

• Eruption of Mount Everest

• Eruption of Mount Kilimanjaro

• Eruption of Mount Fuji

• Eruption of Mount Tambora

Answer explanation

The eruption of Mount Tambora is known to impact global temperatures.

What is the main solar activity that affects Earth's climate?

• Solar flares

• Sunspots

• Solar wind

• Solar eclipses

Answer explanation

Sunspots are the main solar activity that affects Earth's climate.

What was the Little Ice Age?

• A period of intense volcanic activity

• A minor glacial period in the 17th century

• A fictional event from a movie

• A warm phase during the Holocene

Answer explanation

The Little Ice Age refers to a minor glacial period in the 17th century, highlighting the correct choice.

What is the Medieval Warm Period known for?

• A time of significant ice sheet advancement

• A phase of global cooling

• A period of relatively warm climate in the North Atlantic region

• An era of extensive desertification

Answer explanation

The Medieval Warm Period is known for a relatively warm climate in the North Atlantic region.

What was the Loch Lomond Stadial?

• A warm interglacial in Scotland

• A medieval battle

• A cold period in Scotland after the last glacial maximum

• A type of Scottish dance

Answer explanation

The Loch Lomond Stadial refers to a cold period in Scotland after the last glacial maximum.

What is thermohaline circulation?

• A weather pattern caused by volcanic eruptions

• A type of mountain range

• A global ocean circulation driven by temperature and salinity

• A feedback mechanism involving forest growth

Answer explanation

Thermohaline circulation is a global ocean circulation driven by temperature and salinity.

How does albedo effect contribute to glaciation?

• By increasing absorption of solar radiation

• By decreasing absorption of solar radiation, reflecting more sunlight

• By causing more volcanic eruptions

• By changing Earth's orbit

Answer explanation

Albedo effect contributes to glaciation by decreasing absorption of solar radiation, reflecting more sunlight.

What is the consequence of permafrost melting?

• It cools the atmosphere

• It releases greenhouse gases, amplifying warming

• It increases Earth's albedo

• It triggers volcanic eruptions

Answer explanation

Permafrost melting releases greenhouse gases, amplifying warming.

Which feedback mechanism involves ice and snow?

• Urban heat island effect

• Albedo effect

• Ocean acidification

• Deforestation

Answer explanation

The correct feedback mechanism involving ice and snow is the Albedo effect.