Earth & Space Science - Unit 5

Alfred Wegener showed that the sea floor was spreading and moving the continents.

What force is cited as the driving force that moves the ocean plates?

The number of years something has actually existed is its

Which one of the following is not an evidence for sea floor spreading?

Apparently, the Earth's magnetic poles have reversed in the past.

Why is oceanic crust denser than continental?

What is it called when oceanic crust goes down into the mantle under the continental crust?

If a fossil has 25% of its parent material remaining, and its half life is 200 years, it is

How did we determine that the outer core is liquid?

What is the name of the supercontinent when all the continents were connected?

Which scientist proposed that the ocean floor was expanding around mid ocean ridges?

What type of boundary is it when an ocean plate meets a continental plate?

Magma that turns into rock at the mid ocean ridge, has iron crystals that record

Which type of crust is recycled into the mantle?

Which one of the following is not evidence for a one time supercontinent?

Which physical layer of the Earth is broken up into the tectonic plates?

Which type of boundary forms mid-ocean ridges?

Which layer of the Earth is made up of molten rock that moves very slowly?

Which is NOT a piece of evidence used to determine the layers of the Earth?

How did the Mariana Trench form?

Carbon dating and other forms of radiometric dating are examples of