Maps
What is a cross section?
a. The way rocks are recycled over geologic time
b. A view of the interior of the Earth from above the planet’s surface
c. A conceptual diagram of what a part of the interior of Earth would likely look like if viewed from the side
d. A fracture inside the Earth where no movement has taken place
c. A conceptual diagram of what a part of the interior of Earth would likely look like if viewed from the side
The lithosphere is composed of the ____________.
a. crust only
b. crust, mantle, and outer core
c. top 100 m of sediments and sedimentary rocks
d. crust and the uppermost part of the mantle
d. crust and the uppermost part of the mantle
Which of the following is true regarding the outer and inner cores?
a. The outer core is solid metal and the inner core is liquid metal
b. The outer core is dense oceanic crust and the inner core is less dense continental crust
c. The outer core is low density continental crust and the inner core is dense oceanic crust
d. The outer core is liquid metal and the inner core is solid metal
d. The outer core is liquid metal and the inner core is solid metal
At a subduction zone, the overriding plate ____________.
a. is always composed of continental lithosphere
b. is always composed of oceanic lithosphere
c. may be composed of either oceanic or continental lithosphere
c. may be composed of either oceanic or continental lithosphere
Qualitative data is different from quantitative data because
a. Qualitative data requires numeric data
b. Qualitative data does not require numeric data
c. Qualitative and quantitative data are actually the same thing
d. Qualitative data requires specific instrumentation for measurement
b. Qualitative data does not require numeric data
On a topographic map, what is the purpose of contours?
a. Organize rainfall by separating high rainfall from low rainfall data points
b. Contours color a map according to lithology
c. Organize elevation data points by separating elevations higher than the contour from elevations lower than the contour
d. Organize geologic features, such as volcanoes, into specific zones.
c. Organize elevation data points by separating elevations higher than the contour from elevations lower than the contour
The lithosphere lies directly above the ____________.
a. biosphere
b. asthenosphere
c. crust
d. mega-core
b. asthenosphere
Continental crust ____________.
a. is thicker than oceanic crust
b. contains more basaltic rocks than oceanic crust
c. is denser than oceanic crust
d. contains no crustal material, consisting solely of lithified upper mantle
a. is thicker than oceanic crust
Continental mountain ranges are created at:
a: Outer space
b. transform boundaries
c. convergent boundaries
d. divergent boundaries
c. convergent boundaries
Hot spots are:
a. Vertical conduits of magma only found along convergent boundaries
b. Vertical conduits of magma only found along transform boundaries
c. Vertical conduits of magma only found along divergent boundaries
d. Vertical conduits of magma found either far from or at plate boundaries, but they never change location.
d. Vertical conduits of magma found either far from or at plate boundaries, but they never change location.
What is shown on a geologic map?
a. Only tectonic boundaries
b. Only contours demonstrating elevation differences
c. Colored regions that demonstrate distribution of different rock types that would be visible beneath soil
d. Photography of the surface of Earth as taken from satellite
c. Colored regions that demonstrate distribution of different rock types that would be visible beneath soil
The distinction between the lithosphere and the asthenosphere is based on a difference in ________.
a. lithology (rock type)
b. color
c. degree of physical rigidity (strength)
d. mineral content (and odor)
c. degree of physical rigidity (strength)
What rock type is oceanic crust made of ?
Basalt
At a subduction zone, the downgoing (subducting) plate ____________.
a. is always composed of continental lithosphere
b. is always composed of oceanic lithosphere
c. may be composed or either oceanic or continental lithosphere
b. is always composed of oceanic lithosphere
When volcanoes are created by subduction, they always form on:
a. The subducting plate
b. The over-riding plate (the one not subducting)
c. Either the subducting or over-riding plate
d. Neither the subducting or over-riding plate
b. The over-riding plate (the one not subducting)
Define slope or grade %.
(elevation change/horizontal distance) * 100
Unlike the lithosphere, the asthenosphere ____________.
a. is able to flow over long periods of time
b. has a density similar to the core
c. varies in thickness from place to place
d. is relatively cool (<1300 degrees C)
a. is able to flow over long periods of time
What rock type is continental crust made out of ?
Granite
The small amount of pushing force that contributes a small amount of force related to the movement of plates is produced ____________.
a. at mid-ocean ridges / divergent boundaries
b. at hot spots
c. at subduction zones
d. in the interiors of continental plates
a. at mid-ocean ridges / divergent boundaries
Seafloor magnetic stripes are formed by
a. only the constant motion of crust outwards at a spreading center
b. only by the periodic reversal of Earth’s magnetic poles
c. by the combined efforts of seafloor spreading and magnetic pole reversals
d. wizards (this is not the correct answer, don’t select this answer, thanks)
c. by the combined efforts of seafloor spreading and magnetic pole reversals
Which map type uses Digital Elevation Models (DEMs) to create the map?
Answer: Shaded Relief Map
What is the temperature that separates the lithosphere from the asthenosphere?
1300 degrees celcius
What rock type is the mantle made of?
Peridotite
Which process is most responsible for plate tectonic motion?
a. slab pull (subducting oceanic crust)
b. ridge push (spreading centers)
c. mantle convection
d. core convection
a. slab pull (subducting oceanic crust)
Is the Asthenosphere completely solid?
Answer: No, the asthenosphere is 96-98% solid, but has some melt present which lets it flow