Ice Ages Overview

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What is one of the factors that can influence an ice age?

Elevated Sun energy output

Higher levels of greenhouse gases

Increased volcanic activity (correct)

Stable ocean currents

During which ice age was the Earth possibly covered in ice all the way to the equator?

Karoo

Quaternary

Andean-Saharan

Cryogenian (correct)

What is the current period the Earth is in, within the Quaternary ice age?

Paleozoic period

Mesozoic period

Holocene period (correct)

Pleistocene period

Which extinct mammal was from the last ice age?

Saber-toothed tiger Signup and view all the answers

What can cause the Earth to cool leading to an ice age?

Low levels of carbon dioxide in the atmosphere Signup and view all the answers

Which factor plays a significant role in introducing huge amounts of carbon dioxide into the atmosphere?

Volcanic activity Signup and view all the answers

What defines a glacial period within an ice age?

A cold period with expanding glaciers Signup and view all the answers

How do scientists determine when ice ages have occurred?

By examining the geology of the land and fossil evidence Signup and view all the answers

What is the current stage of the Quaternary ice age?

Interglacial period Signup and view all the answers

During an ice age, which areas were covered by giant ice fields and glaciers?

North America and Northern Europe Signup and view all the answers

Which geological feature can only be explained by the movements of giant glaciers?

Presence of valleys and fjords Signup and view all the answers

What was one of the longest ice ages in Earth's history?

Huronian ice age Signup and view all the answers

Ice Ages Overview

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Questions and Answers

What is one of the factors that can influence an ice age?

During which ice age was the Earth possibly covered in ice all the way to the equator?

What is the current period the Earth is in, within the Quaternary ice age?

Which extinct mammal was from the last ice age?

What can cause the Earth to cool leading to an ice age?

Which factor plays a significant role in introducing huge amounts of carbon dioxide into the atmosphere?

What defines a glacial period within an ice age?

How do scientists determine when ice ages have occurred?

What is the current stage of the Quaternary ice age?

During an ice age, which areas were covered by giant ice fields and glaciers?

Which geological feature can only be explained by the movements of giant glaciers?

What was one of the longest ice ages in Earth's history?

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