Flashcards in Semester 1 Final Exam Study Guide Deck (52)
How many mechanical layers of the earth are there?
The earth's magnetic field protects the earth from what?
The "supercontinent" proposed by the continental drift theory was called what?
This event often happens when a dense oceanic plate converges with a less dense continental plate.
Which layer is earth's only liquid layer?
When two tectonic plates are moving away from each other, the boundary is called what?
Which layer of the earth generates the magnetic field?
What natural phenomenon happens when the earth's magnetic field is overloaded by solar radiation?
Aurora Borealis (the Northern Lights)
What is the point IN the earth where an earthquake occurs called?
What is often times the result of a continental convergent boundary?
What are fractures in the earth called?
What type of fault runs almost vertically through the surface and causes the blocks of the surface to move horizontally to each other?
What is the place ON THE SURFACE directly above where an earthquake occurs called?
This type of boundary occurs where two tectonic plates move horizontally to each other.
Why did Mars cool off and lose its magnetic field?
It's too small of a planet
Which layer of the earth is broken into the tectonic plates?
Earthquakes release energy in the form of...
How are metamorphic rocks formed?
Heat and pressure under the earth's surface
How are igneous rocks formed?
Cooling of magma or lava
How are sedimentary rocks formed?
Weathering and erosion combined with pressure
The surface of sedimentary rocks often contains the remains of dead organisms called...
When the surfaces of metamorphic rocks are FOLIATED, they have...
What is the difference between magma and lava?
Magma is molten rock BELOW the earth's surface, lava is molten rock ABOVE of the earth's surface
How is sedimentary rock turned into metamorphic rock?
Sedimentary rock is cemented and compacted by pressure, pushed down into the earth, and when heat is added to the pressure below the surface, it becomes a metamorphic rock
What mineral is a 10 on the Mors scale?
Ionic bonds occur when one element does THIS with its electrons with another element
Gives up an electron
Covalent bonds occur where two elements do THIS with their electrons
What is precipitation?
When dissolved minerals come out of water
How are silicates formed?
When magma cools and crystallizes