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Plate Tectonics And Earth's Internal Structure--Part 1
Test Description: *Evidence for Plate Tectonics *Tectonic Plate Interactions *Earth's Interior
Instructions: Answer all questions to get your test result.
1) How does the composition of oceanic crust differ from continental crust?
A
Continental crust is less dense than oceanic crust.
B
Continental crust has a higher iron content than oceanic crust.
C
Continental crust contains a greater percentage of minerals than oceanic crust.
D
Continental crust has a higher magnesium content than oceanic crust.
2) Which is the outermost compositional layer of Earth?
A
mantle
B
asthenosphere
C
crust
D
outer core
3) Which is the correct order of Earth's structural layers, from top to bottom?
A
outer core, inner core, lithosphere, mesophere, asthenosphere
B
lithosphere, asthenosphere, mesosphere, outer core, inner core
C
outer core, inner core, mesosphere, asthenosphere, lithosphere
D
asthenosphere, mesosphere, lithosphere, outer core, inner core
4) Which statement best describes Earth's core?
A
The outer core is solid and the inner core is liquid.
B
The entire core is solid.
C
The outer core is liquid and the inner core is solid.
D
The outer core is partly molten and the inner core is fully molten.
5) What are the most common elements in Earth's core?
A
iron and magnesium
B
magnesium and oxygen
C
silicon and oxygen
D
iron and nickel
6) Which of the following best describes the makeup of the lithosphere?
A
continental crust, oceanic crust, and all of the mantle
B
continental crust and oceanic crust only
C
continental crust, oceanic crust, and the uppermost part of the mantle
D
continental crust only
7) Where is the mesophere located inside Earth?
A
the lower mantle
B
the upper mantle
C
the inner core
D
the outer core
8) Which term best describes the composition of Earth's core?
A
diamond
B
rocky
C
conglomerate
D
metallic
9) Earth's mantle includes which structural layers?
A
part of the crust and all of the mantle
B
asthenosphere and outer core
C
asthenosphere, mesosphere, and part of the lithosphere
D
mesosphere, outer core, and inner core
10) Which layer of Earth's interior is liquid?
A
outer core
B
mesosphere
C
inner core
D
lithosphere
11) What is the thickness of continental crust?
A
1000–2900 km
B
5–10 km
C
100–1000 km
D
30–100 km
12) The mantle is composed mainly of minerals that are rich in which elements?
A
oxygen and hydrogen
B
iron and magnesium
C
oxygen and silicon
D
iron and nickel
*select an answer for all questions
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