Question 1

Which of the following types of evidence best supports the theory of plate tectonics?

Accepted Answer

precise measurements of the relative motions of pieces of Earth’s lithosphere

Answer

precise measurements of the relative motions of Earth’s inner and outer cores

Answer

precise measurements of the thickness of oceanic crust

Answer

precise measurements of the thickness of continental crust

Question 2

Why did people not believe in Wegener’s theory about continental drift?

Accepted Answer

The scientists did not know the force responsible for moving the continent

Answer

There was a competing theory at the time that was more believable

Answer

There was no data showing the continents ever moved

Answer

The scientist presenting the data was unreliable

Question 3

Which of the following discoveries would provide the best evidence that Earth's continents had once been part of a large landmass that has since broken apart?

Accepted Answer

fossils of organisms that lived hundreds of millions of years apart found

Answer

fossils of organisms that lived during the same time period found

Answer

fossils of different species of organisms found

Answer

fossils of the same species of organism found

Question 4

How is plate tectonics supported by the apparent fit of the continental coastlines?

Accepted Answer

The continents appear to have once been joined together and to have since drifted apart.

Answer

The continents appear to have once been joined to oceanic crust and to have since been lifted above sea level.

Answer

The continents appear to have once been joined to additional continents that have since been destroyed.

Answer

Plate tectonics is not supported by the apparent fit of the continental coastlines.

Question 5

According to plate tectonics, which of the following is true?

Accepted Answer

The continents used to all be connected in one continent

Answer

The youngest rock is found at the tops of mountains

Answer

Earthquakes happen in the middle of continents

Answer

Continents never move but the plates underneath them do

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