1. what is Pangaea ?
2. what is Panthalassa ?
3. what is continental drift theory ?
4. what is volcano ?
5. how does an earthquake occur ?
6. what is tsunami ?
please answer these questions
Answers
Answer:
1.) Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 335 million years ago, and began to break apart about 175 million years ago.
2.) Panthalassa, also known as the Panthalassic Ocean or Panthalassan Ocean , was the superocean that surrounded the supercontinent Pangaea. During the Paleozoic–Mesozoic transition c. 250 Ma it occupied almost 70% of Earth's surface.
3.) Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed. The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in 1596.
4.) a mountain with a hole (crater) at the top through which steam, hot melted rock (lava), fire, etc. sometimes come out
5.) An earthquake is caused by a sudden slip on a fault. ... When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.
6.) a very large wave in the sea which destroys things when it reaches the land, and is often caused by movements under the surface of the earth (an earthquake)
Explanation:
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Explanation:
#1. what is Pangaea ?
=>Pangaea definition, the hypothetical landmass that existed when all continents were joined, from about 300 to 200 million years ago.
2. what is Panthalassa ?
=>Panthalassa is a super ocean surrounding the super continent Pangaea which had existed during the late Paleozoic eras.
3. what is continental drift theory ?
=>Alfred Wegener suggested continental Drift Theory in the 1920’s.
- According to Continental Drift Theory there existed one big landmass which he called Pangaea which was covered by one big ocean called Panthalassa.
- A sea called Tethys divided the Pangaea into two huge landmasses: Laurentia (Laurasia) to the north and Gondwanaland to the south of Tethys.
- Drift started around 200 million years ago (Mesozoic Era, Triassic Period, Late Triassic Epoch), and the continents began to break up and drift away from one another.
4. what is volcano ?
=>A volcano is a rupture in the crust of a planetary- mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma .
5. how does an earthquake occur ?
=>An earthquake is caused by a sudden slip on a fault.
When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.
6. what is tsunami ?
=>tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions.
- Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea.
- Out in the depths of the ocean, tsunami waves do not dramatically increase in height.
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