Geography Iclicker Questions
The Earth is approximately how old?
4.6 billion years
Which of the earth's structural layers is the thinnest?
Lithosphere
dynamic equilibrium model refers to
a balancing act between tectonic uplift and rates of denudation by weathering and erosion in a given landscape
Convergent plate boundaries are characteristics of
collision zones between plates
Which of the following gives the correct sequence of layers in Earth, from the surface of the center?
crust, mantle, outer core, inner core
Delicate Arch in Utah is an example of
differential weathering
When rock strata are strained beyond their ability to remain an intact unit, displacement occurs in a process known as
faulting
The science that specifically studies the origin, evolution, form and spatial distribution of landforms is
geomorphology
The density of material below the Moho is ______ that above it
greater than
Figure shows that as the distance from a mid-ocean ridge increases, the age of the sea floor
increases
The west coasts of North America and South America are dominated by
mountain ranges
in most areas, the upper surface of bedrock is partially weathered to broken-up rock called
regoliath
Vertical elevation differences in a local landscape are referred to as
relief
Divergent plate boundaries are characteristics of
sea-floor spreading centers
Limestone is a type of ________ rock that forms when ________.
sedimentary; calcium carbonate precipitates, or organic material containing calcium carbonate accumulates in a water environment
Which of the following is incorrectly matched?
shearing-stretching ** shearing would be twisting
When geologists or archaeologists dig downward into a unit of rock or sediment, they are digging "back in time." This fact is based on the principle of ________.
superposition
A continental craton is best described as
the surface accumulation of molten rock
When geologists conclude that the Grand Canyon sequence of rocks was formed through hundreds of millions of years of disposition, mountain building, and erosion, they are basing his conclusion on the principle of:
uniformitarianism
Which of the following lists the correct sequence of divisions in the geologic time scale, from largest to smallest?
Eon --> Era --> Period --> Epoch
at a strike-slip fault
lateral shearing occurs
On average the thickness of the oceanic crust is ____ that of continental crust
less than Oceanic crust = 5km Continental crust = 30km
Earth's interior is layered because
materials became sorted based on density as the Earth solidified.
A rock transformed by heat and or pressure is referred to as a(n)
metamorphic rock
Uplift of the landscape creates ________ energy which is converted to ________ energy when materials begin to move downslope.
potential; kinetic