Evidence of plate motion

Evidence of plate motion

Multiple Choice

2. Who is the person credited with developing the theory of continental drift?

• Harry Hess

• Galileo

• Alfred Wegener

• Newton

Multiple Choice

3. What is continental drift?

• The idea that Earth always stays the same.

• The idea that continents move over time.

• The idea that Earth is old.

• The idea of using evidence to support claims.

Multiple Choice

1. The supercontinent was named ________ where the 7 continents today use to be one large continent.

• Gondwanaland

• Wegener

• Hess

• Pangaea

Multiple Choice

Wegener’s proposal of a supercontinent was supported by:

• earthquake data

• seafloor magnetism

• rock, fossil, and climate data.

• convection currents in the mantle.

Multiple Choice

Wegener suggested that coal beds discovered in Antarctica indicated that this continent was

• once under water

• once near the equator

• always frozen

• part of Africa

Multiple Choice

One of the fossils Wegener used to support his hypothesis of continental drift was

• Glossopteris

• insects in tree amber

• Trilobite

• ammonite molds

Multiple Choice

What are Mid-Ocean Ridges?

• A chain of underwater waterfalls

• A chain of underwater volcanos

• A chain of underwater mountains

• A chain of underwater rocks

Multiple Choice

Magma, or molten material, __________ and hardens

• cools

• warms

• shrinks

Multiple Choice

The oceanic crust is pushed aside on both sides of the

• Continent's edge

• Deep-ocean trench

• Mid-ocean ridge