History - Ch. 2 Physical Geography

What is an equinox?

• gravity

• imaginary line running through Earth's center

• when day and night are of equal length

• occurs on or about June 21 in the Northern Hemisphere

What is groundwater?

• water contained in Earth's crust

• underwater plain that borders a continent

• Arctic, Southern, Indian, Atlantic, Pacific

• water in a swimming pool

What causes Earth to constantly orbit around the sun?

• axis

• isthmus

• tectonic plates

• gravity

Check all that apply.

What two continents are covered mostly by ice sheets?

• Greenland

• Canada

• Iceland

• North America

Imaginary line running through Earth's center

• tundra

• isthmus

• axis

• latitude

Underwater plain that borders a continent

• continental shelf

• summer soltice

• axis

• isthmus

A narrow strip of land connecting two larger land areas

• biome

• tundra

• continental shelf

• isthmus

Occurs on or about June 21 in the Northern Hemisphere

• winter solstice

• summer solstice

• fall solstice

• spring solstice

A biome

• equinox

• isthmus

• groundwater

• tundra

How many tectonic plates make up the Earth's crust?

• 16

• 26

• 15

• 13