assignment 3 Flashcards
What is the most outer part of the earth called
crust
what is the middle part of earths core called
mantle
what is the inner part of earths core called
core
When Earth first formed, the composition was homogeneous. Compounds started chemically separating due to their different densities. What is this process called?
a) Assimilation
b) Differentiation
c) Layering
d) Sinking
sinking
Which of the following is TRUE regarding continental crust?
a) Continental crust is thinner than oceanic
crust.
b) Continental crust is older than oceanic
crust.
c) Continental crust is more dense than
oceanic crust.
d) All of the above are true
b. continental crust is older than oceanic crust
What is the distinction between Earth’s inner and outer core?
a) The inner core is made of granite; the
outer core is made of basalt
b) The inner core is solid metal; the outer
core is liquid metal
c) The inner core is liquid metal; the outer
core is solid rock
d) There is no difference between the inner
and outer core
b. the inner core is solid metal; the outer core is liquid metal rock
Where does sea-floor spreading occur?
a) At subduction zones
b) Along transform plate boundaries
c) Only at actively forming mountain ranges
d) At mid-ocean ridges
at mid ocean ridges
which is the rigid, non-flowing layer made of Earth’s crust and uppermost part of the mantle
lithosphere
the asthenosphere has…
high temperatures that allow this layer to flow
Which plate boundary type does the diagram above represent?
a) Convergent boundary
b) Divergent boundary
c) Submergent boundary
d) Transform boundary
submergent boundary
Why is the oceanic plate subducting underneath the continental plate?
a) The oceanic plate is thicker than the
continental plate
b) The oceanic plate is denser than the
continental plate
c) The oceanic plate is more felsic than the
continental plate
d) The continental plate is subducting
underneath the oceanic plate
b. the oceanic plate is denser than the continental plate
