This flashcard set will help you to prepare for Science Unit 8 Quiz 1 and the final unit test.
study of the processes which formed the Earth's crustal rocks and surface landforms
referring to the movement and changes in the Earth's crust
usually covered by a thin layer of soil or by a body of water
the thin, fragile, outermost layer of the Earth
Earth's crust consists of ______.
below the thin layer of soil and water that cover the surface of the Earth
Oceanic crust is ______ than the crust below the continents
It is about 5 km thick.
Oceanic crust is made of ______ covered with a very thin layer of salt sediments.
consist primarily of granite
It is about 32 km thick.
Granite is _______ (lighter) than basalt
it appears to rise to higher elevations or float on the mantle
movement of ______ on the mantle is called plate tectonics
Large pieces of Earth's crust
Tectonic Plates _____ on top of the Earth's upper mantle
There are _____ large tectonic plates and many smaller ones.
theory that the continents were once a single, large landmass and slowly drifted apart
_____ appear to line up when the continents are placed back together in a single landmass
Scientists have also found ____ in eastern South America which match those found in western Africa.