Science LT #2 Reviewer

7. Has anyone been able to
reach the core of the earth?
How were scientists able to
study the earth’s interior?

11. 1. Which is not a layer of the
Earth?
A. Crust
B. Mantle
C. Outer Core
D. Inner Crust

12. 2. Starting with the outermost layer,
what is the order of the Earth’s
layers?
A. Core - Mantle – Crust – Inner Crust
B. Crust - Mantle - Outer Core - Inner Core
C. Outer Mantle - Inner Crust – Inner
Core
D. Outer Crust - Inner Core – Outer
Mantle

13. 3. The core of the Earth is made
up almost completely of which
element?
A. Iron
B. Granite
C. Sulfur
D. Calcium

14. 4. Which layer of the earth is the
thickest?
A. Core
B. Crust
C. Mantle
D. All of them have the same
thickness

15. 5. Which layer of the Earth is
liquid?
A. Crust
B. Outer Core
C. Inner Core
D. Lithosphere

16. TRUE OR FALSE?
F 6.The center of the Earth is made
of molten rock.
T 7.Most of the Earth’s heat is
stored in the mantle.
T 8.The outer core is liquid.

17. TRUE OR FALSE?
T 9.Earthquakes occur when heat
travels through the mantle and
causes tectonic plates to shift.
F 10.The thinnest parts of the
Earth’s crust are its continents.

18. TRUE OR FALSE?
T 11.Extreme pressure causes the
inner core of the Earth to remain
T solid.
12.The crust of the Earth is much
T cooler than its other layers.
13.The Earth’s mantle is flexible
and shifts under heavy loads.

19. TRUE OR FALSE?
F14.The core is where geologists
look for oil, gas, and other
Fresources.
15.The crust is separated into
two parts: upper and lower crust.

46. The crust and
the upper layer
of the mantle
together make
up a zone of
rigid, brittle
rock called the
Lithosphere..

51. The
asthenosphere
is the
semi-rigid part
of the middle
mantle that
flows.

54. Mohorovicic
Discontinuity
Lower mantle
Astheno-
sphere

58. When the
convection
currents
flow in the
asthenosphere
they also move
the crust.

71. The boundary between the
outer core and the mantle is
called ….

77. What is
the inner
core
made of?

79. Why is the
inner core
solid despite
its extremely
high
temperature?