Earth's Layers and Plate Tectonics

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

• Harry Hess
• Galileo Galilei
• Alfred Wegener
• Sir issac Newton

What evidence used by Alfred Wegener to support the idea of supercontinent is represented by this map?

• fossil evidence
• glacial evidence
• similar rock layer evidence

The land mass where all of the continents were once together in one large continent is called ________________.

• Laurasia.
• Pangaea.
• Eurasia.
• Gondwana.

What are the three types of Evidence that supports Alfred Wegener's Theory?

• Fossils, Fish, and Land
• Sedimentary, Magma, and Climate
• Fossils, Land forms, and Climate
• Climate, Land forms, and Metamorphic rock

Originally the Continental drift theory was not well received by other scientist. Why?

• There was a competing theory at the time that was more believable.
• There was no data showing the continents ever moved.
• The scientists did not know the force responsible for moving the continents.
• The scientist presenting the data was unreliable.

Who came up with the theory of seafloor spreading?

• Harry Hess
• Alfred Wegener
• Harry Wegener

Where would the oldest rock be found?

• L
• M
• N
• O

How have scientists been able to infer the internal structure of Earth without being able to directly observe inside the Earth?

• Scientists analyze how seismic waves move throughout Earth's interior.
• Scientists make educated guesses about Earth's internal structure based on previous hypothesis.
• Scientists use satellite radar and sonar technologies to map Earth's internal layers.
• Scientists study different types of rocks from many different locations on Earth's surface.

The deeper into Earth you go the...

• greater the pressure
• less pressure
• pressure remains the same

As depth increases, the temperature of Earth's layers

• increases
• decreases
• remains constant