Earth's Layers Question Preview (ID: 14422)


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Earth's thinnest layer is the _________________________.
a) core
b) crust
c) outer core
d) inner core

Which of these layers is the coolest?
a) crust
b) mantle
c) outer core
d) inner core

The _________________________ is composed of Earth's crust and solid upper mantle.
a) inner core
b) outer core
c) lithosphere
d) asthenosphere

Earth's rocky outer layer is the ________________________.
a) crust
b) mantle
c) outer core
d) asthenosphere

The part of Earth's rocky outer layer that makes up the landmasses is the ___________________.
a) mantle
b) oceanic crust
c) asthenosphere
d) continental crust

The part of Earth's rocky outer layer that makes up the floor of the ocean basins is the __________________.
a) mantle
b) oceanic crust
c) asthenosphere
d) continental crust

Earth's inner core is ______________________because it is _____________________.
a) solid; very hot
b) liquid, very hot
c) solid; under a lot of pressure
d) liquid; under a lot of pressure

The average thickness of Earth's lithosphere is _______________________ kilometer(s).
a) 1
b) 10
c) 100
d) 1000

Select the sequence that lists Earth's layers from hottest to coolest.
a) mantle, crust, core
b) core, mantle, crust
c) crust, core, mantle
d) mantle, core, crust

Continental crust is made largely of _________________, which oceanic crust is made largely of ________________.
a) iron; nickel
b) nickel; iron
c) granite; basalt
d) basalt; granite

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