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intro/features/ location
plate techtonics
earthquakes
volcanoes
minerals
100
what are the four branches of earth science?
oceanography, geology, astronomy, meteorology
100
what is the continental drift?
theory that the Earth's continents have drifted apart over time
100
what is the elastic rebound theory?
theory beind the cause of earthquakes on Earth
100
what is magma?
molten rock under the surface of the Earth
100
what characteristic do all minerals posses?
1 solid 2 inoranic 3 occur naturally
200
difference between theory and law?
theory- accepted not proven law- proven
200
what is Pangea?
all the continents were conected to make one super continent
200
what is the focus and epicenter of an earthquake?
the focus is the point under the surface of the Earth where plates fault the epicenter is directly above the focus
200
what is lava?
it is when magma reaches the surface of the earth
200
what is crystal?
characteristics of having regular geometric shapes
300
how do the seasons change?
different positions and tilt of the Earth to the sun
300
what is the discovery of the ocena floor spreading?
seafloor spreading
300
what is a P wave and how it differs from an S wave?
primary waves, first to arrive from an earthquake
300
what is the difference between mafic and felsic lava?
Mafic is thin lava, non explosive felsic is thick lava, explosive
300
what are silicate minerals?
minerals containing silicon and oxygen (80% of all minerals)
400
what are the four layers of the earth?
crust, mantle, outer core, inner core
400
what are the three different types of plate boundaries?
converge, diverge, and transform
400
what is an S wave?
the secondary wave of an earthquake, the second to arrive in an earthquake
400
what are the three different types of volcanoes?
sheild, composite, cinder cone
400
what is Fluorescence?
ability of a mineral to glow or change color under UV light
500
what are the steps of the sceintific method?
1. state the problem 2. gather information 3. make a hypothesis 4. test hypothesis 5. state the conclution
500
what is a subduction zone?
region where one plate moves underneath another plate
500
what is magnitude and intensity?
magnitude is amount of energy in seismic waves intensity is the amount of damage caused by an earthquake
500
what is a caldera?
a feature produced when an emptied magma chamber causes a volcano to collapse
500
what is the Mohs scale?
1-10, softest- hardness