Geologic Time

When the Earth was just a large mass of land it was known as ____.

• Pangea

• Panthalassa

• Laurasia

• Gondwana

The oldest era in geological time is ____.

• Cenozoic

• Mesozoic

• Paleozoic

• Neoarchean

The scientist who proposed the Continental Drift Theory was ____.

• Ortelius

• Wegener

• Hooke

• Mohs

The layers of the Earth, in order from inside out, are ____.

• inner core, outer core, mantle, and crust.

• crust, mantle, outer core, inner core.

• melted rock, organic material, crust.

• crust, organic material, molten rock.

When two plates move in the opposite direction and separate, it is called ____.

• convergent boundary.

• divergent boundary.

• fault zone.

• convection zone.

A subduction zone is formed when ____.

• one plate gets under another.

• two plates are separated.

• two plates move towards the same place.

• one plate brushes with another.

On the ocean floor, there are extremely hot points of the mantle called ____.

• geyser.

• trench.

• submarine volcano.

• fixed point.

The rocks produced by hardened lava on the Earth's surface are known as ____.

• extrusive.

• intrusive.

• sedimentary.

• metamorphic.

Conglomerates, gaps, sandstone, and lodolites are examples of ____ rocks.

• igneous

• sedimentary

• metamorphic

• melted

It was the only ocean on Earth 225 million years ago.

• Panthalassa

• Gondwana

• Laurasia