Science Chapter C1 Lesson 2 and 3 Flashcards
What was Pangea
Pangea was a supercontinent that separated slowly millions of years ago
What is the theory of how Earth’s continents move over its surface
The Continental Drift
How do we know how all of this happened
Fossils
What are the 5 layers of Earth
Crust, Asthenosphere, Mantle, Outer Core, and the Inner Core
What is the Inner Core made out of
Solid Iron
What are Plates
Rigid blocks of Crust and Upper Mantle rock
What is a Volcano
A mountain formed by lava and ash
Magma
Is molten rock from Earth’s Mantle
What is the Richter scale used for
To measure relative strengths, or magnitudes of Earthquakes
What is a Seismograph used for
To measure an Earthquake
Why do plates move
Because they float on the mantle allowing it to move
How do mountains form
They form as plates push together
How do volcanoes form
They form as the plates pull apart
Convergent
Plates push together
Divergent
Plates pull apart
Transform
Plates slide pass apart
What are the 7 continents
Africa, Antartica, Asia, Australia, Europe, North America, and South America
What are layers of Earth made of
They are made of rock
Where are the oldest layers of Earth at
The oldest layers are on the bottom
What do Fossils tell us
When animals lived in a place and how it was changed.
