LATEST VERIFIED UPDATE: ESS 101 A+ QUESTIONS AND
ANSWERS.
Meteorites that strike the earth are predominantly composed of_____?
Iron-Nickel and Silicate minerals
When two continental plates converge________
a collision mountain belt will form, and plutons will be intruded into the country rock
The most widely accepted explanation for the earth's magnetic field is ________
movement of electrons in the molten iron of it's outer core
The Columbia Plateau is composed of rock rich in:
basalt
The melting temperature of granitic magma (wet melt) ___________
increases as pressure is reduced (as the mamga rises)
A partial melt of the asthenosphere will_____
rise towards the surface
Aa basalts are________
blocky textured flows that form as the viscosity increases during degassing
Viscosity
maple syrup (high viscosity, explosive, hold gas, build up pressure over time, felsic)
water (low, shield, nonviscous, release gas, mafic, from mantle)
When two ocean plates converge______
the older plate will be subducted
What kind of margin exists today in East Africa?
divergent margin
What type of volcanic rock would incorporate lithic fragments during the
eruption?
volcanic tuff
Why does potassium feldspar develop cleavage planes yet it is a framework
silicate mineral with all it's oxygen atoms shared between tetrahedra?
ANSWERS.
Meteorites that strike the earth are predominantly composed of_____?
Iron-Nickel and Silicate minerals
When two continental plates converge________
a collision mountain belt will form, and plutons will be intruded into the country rock
The most widely accepted explanation for the earth's magnetic field is ________
movement of electrons in the molten iron of it's outer core
The Columbia Plateau is composed of rock rich in:
basalt
The melting temperature of granitic magma (wet melt) ___________
increases as pressure is reduced (as the mamga rises)
A partial melt of the asthenosphere will_____
rise towards the surface
Aa basalts are________
blocky textured flows that form as the viscosity increases during degassing
Viscosity
maple syrup (high viscosity, explosive, hold gas, build up pressure over time, felsic)
water (low, shield, nonviscous, release gas, mafic, from mantle)
When two ocean plates converge______
the older plate will be subducted
What kind of margin exists today in East Africa?
divergent margin
What type of volcanic rock would incorporate lithic fragments during the
eruption?
volcanic tuff
Why does potassium feldspar develop cleavage planes yet it is a framework
silicate mineral with all it's oxygen atoms shared between tetrahedra?
