Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
Rock cycle changes
|
Sedimentary -> changed by heat and pressure intro Metamorphic Rock
Metamorphic -> melt and cool into igneous Igneous -> broken into fragments that may later form sedimentary rock |
|
|
Conservation of matter says about rock cycle
|
rock cycle never destroys elements of rocks but merely redistributes them
|
|
|
Intrusive Igneous Rocks
|
formed and cooled slowly below ground
|
|
|
Extrusive Igneous Rocks
|
formed and cool quickly above ground
|
|
|
Magma vs. Lava
|
Magma = below ground
Lava = above ground |
|
|
Describe Basaltic Rocks
|
igneous rocks, dark colored, dense
contain iron and magnesium but little silica basaltic lava flows freely from a volcano |
|
|
Describe Granitic Rocks
|
lower in density and lighter in color
more silica and less iron and magnesium thick and stiff |
|
|
Describe Andesitic Rocks
|
In between Basaltic and Granitic Rocks
|
|
|
Larger the crystal = extrusive or intrusive rock?
|
intrusive, cools slower = more time
|
|
|
Types of Magma
|
basaltic, granitic or andesitic
|
|
|
Volcano
|
opening in earth that erupts gases, ash, and lava
|
|
|
How do volcanoes form
|
when magma flows out of a surface opening called a vent
|
|
|
vent
|
surface opening
|
|
|
crater
|
a steep-walled depression around the vent
|
