Chapter 12 Science Exam

The following features are commonly created by alpine glaciers: horn, arête, cirque, moraine, and hanging valley.

Earth's current climate can BEST be described as an interglacial period of an ice age.

Earth most likely resembled a giant snowball during the Precambrian period.

Milankovitch cycles are created by changes in Earth's axial tilt.

continental glaciers at Earth's poles BEST describes an interglacial period.

Scientists have extracted ice cores from Antarctic ice dating back to around 750,000 years ago. This supports the theory that Earth has been in an ice age throughout the recent past.

The Himalayas would be the BEST place to find an alpine glacier.

Solid ice makes up the majority of a glacier.

A horn is a feature created by the combined effects of several alpine glaciers.

The Earth's current climate can be described as in an interglacial period.

Eskers are created by a stream flowing inside a glacier.

U-shaped valleys are preceded by V-shaped valleys.

An interglacial period can be distinguished from a glacial period by the presence of continental glaciers only at the poles.

We know the Earth is currently in an ice age due to continental glaciers located in Greenland.

Earth has probably been covered completely by snow and ice during the Precambrian period.

changes in Earth's axial tilt contributes to the creation of Milankovitch cycles.

The glaciers around the world have been shrinking.

horns, arêtes, drumlins, and hanging valleys are glacial landforms that require more than one glacier to form.

The last glacial maximum occurred approximately 20,000 years ago.

All of the following may help begin an ice age: volcanic eruptions, clustering of continents near the poles, and an increased amount of dust particles in Earth's atmosphere.

Suppose a snowflake falls onto an alpine glacier. After they fall the water molecules in the snowflake will be compacted to form ice, then flow downhill and eventually melt.

term cirque refers to a rounded indentation in a mountainside that was formed by a glacier.

the BEST place to find a continental glacier is in Antarctica.

the BEST definition of the term glacier is an area of snow and ice that remains year-round.

If you picked a point in Earth's history at random, it is NOT likely that Earth would have had polar ice caps at that time.

volcanic eruptions would probably cool Earth's climate.