Plate Tectonics and Pangea

Wegener's hypothesis of _________________ stated that over the years, continents moved into the places we know them to be today.

• Pangea

• Plate Tectonics

• Continental Drift

• Earth's Formation

True or False: Wegener's ideas were originally dismissed because there was no explanation of who these continents have drifted.

• True

• False

Tags

NGSS.HS-ESS1-5

Where these plates meet are called ________________, and there are 3 kinds.

• faults

• convergence

• plates

• boundaries

When plates are moving towards each other, there is a ___________ boundary.

• convergent

• diverent

• transform

When plates slide past each other, a _____________ boundary occurs.

• convergent

• divergent

• transform

Alfred Wegener hypothesized that about 200 million years ago the continents were joined together in a supercontinent called ________________.

• Pangea

• Plate Tectonics

• Continents

• Continental Drift

What is one piece of evidence that was found that helped Wegener's theory become accepted?

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Answer explanation

- Fossil evidence found on different continents

- Similar mountain chains found on coast lines

- Heated magma dikes

Tags

NGSS.MS-ESS2-3

Earth is not like the other planets in the solar system. Earth has layers, much like an onion. These layers provide answers to many questions. Earth's crust, the outermost layer, is not entirely one piece. It's broken into sections which resemble a huge jigsaw puzzle. These giant sections are known as plates. They are always on the move, creeping along at a snail's pace. The plates seem to float on top of the mantle, the layer of Earth composed of partially melted rock.
Which layer of the mantle do the tectonic plates "float" on top of?

• Lithosphere

• Mesosphere

• Asthenosphere

• Outer Core

Have you ever put together a puzzle? The pieces must fit together perfectly in order to form a picture. Alfred Wegener was a German scientist. Over 100 years ago, he discovered something fascinating about a map of Earth. Wegener realized that the continents seem to fit together like the pieces of a jigsaw puzzle. The giant piece of land was called Pangaea. It existed over 250 million years ago. Over time, Pangaea's tectonic plates slowly drifted apart. These plates in their current positions make our seven continents.

Which of the following best describes Pangaea?

• The seven continents that we know now

• An area on Earth that contains a ring of volcanoes

• A giant landmass that existed over 250 million years ago

• The process by which plates move

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Earth's plates are continually being created or recycled. Scientist have studied the ocean floor. They have discovered ridges of mountains along the bottom of the ocean. These ridges form where two plates have started to move apart. Molten rock from the underlying mantle oozes out. Newly formed rock builds up in the space that has been created by the plates' movement. Ridges are formed along the ocean floor due to ____ leaving the mantle.

• Steam

• Molten Iron

• Solid Rock

• Molten Rock

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3