Earth Flashcards
0
Q
S waves
A
Don’t travel through liquids
1
Q
Seismic waves
A
Measure earthquakes
2
Q
P-waves
A
Do you travel through liquids
3
Q
Continental drift
A
Gradual movement of plate of the geological time
Seafloor spreading
4
Q
Supercontinent
A
Panagaea
5
Q
Wagner’s evidence
A
Jigsaw fit
Similar rock types
6
Q
Metamorphic rocks
A
Changed by heat and pressure
Limestone and marble
7
Q
Sedimentary rocks
A
Dead waste that is squashed and buried
Limestone
8
Q
Igneous rock
A
Slow-cooling crystals are big
Fast. Calling crystals are small
9
Q
Subduction
A
When a more dense oceanic plate is pulled under the light continental plate
10
Q
Convection currents
A
Bring the hot magma towards the first of the earth
11
Q
Volcanoes
A
Caused by subduction
12
Q
Inner core
A
Solid iron radioactive 6000 C
13
Q
Outter core
A
Liquid iron and nickel
14
Q
Mantle
A
400 km thick of molten rock
