NC Geologic History & Volcano Review

True or False: The Appalachian Mountains are older than the Atlantic Ocean.

• True

• False

How old is the Earth estimated to be?

• 2,000 years old

• 4.6 Billion years old

• 10,000 years old

• 20 Billion years old 20 Billion years old

Most of current day North Carolina was underwater at one time.

• True

• False

The islands of the outer banks were created by:

• continent-continent collisions

• earthquakes

• volcanic eruptions

• beach erosion beach erosion

What is the oldest geologic time period?

• Mesozoic

• Paleozoic

• Precambrian

• Cenozoic

North Carolina's climate was once tropical because it was near the equator.

• True

• False

Region A on the map is the __________ region of NC?

• Piedmont

• Sandhils

• Coastal Plain

• Mountain

A large, steep-sided volcano, composed of alternating layers of ash and lava is known as a:

• shield volcano

• composite volcano

• cinder cone volcano

• none of these

Of the three types of volcanoes, which is the least explosive?

• composite

• shield

• cinder cone

• they all have the same level of explosiveness

This type of lava has a very rough, jagged appearance due to its high eruption rate.

• pillow

• pahoehoe

• A'a

• blocky