Download Planet Earth Test Review

Name: ____________________________________ Period ____ Date:_________
Planet Earth Test Review - KEY
Lava
1. Draw a small erupting volcano here:
Label the lava and the magma.
Where is the lava? Above the earth’s surface.
Where is the magma? Inside the earth, below the earth’s surface.
Magma
2. Describe the properties of the physical layers of the Earth:
1. lithosphere
-rocky, solid “land” -made of both continental & oceanic crust
2. asthenosphere -solid that flows “plasticity”
3. mesosphere
-thickest layer – hot, hot, hot
4. outer core
-mostly liquid
5. inner core
-solid & mostly iron (Fe)
DESCRIBE & DRAW THE ARROWS FOR QUESTIONS 3- 5
3. How do tectonic plates move at a convergent boundary: pushes together
4. How do tectonic plates move at a transform boundary: slides past each other
5. How do tectonic plates move at a divergent boundary: pulls apart
6. What type of plate boundary causes earthquakes? Transform boundary
7. The larges slabs of lithosphere (tectonic plates) move on top of which physical layer of
the earth? The physical layer called: The Asthenosphere
8. Write the following example letters beneath the correct plate boundary:
A. San Andreas Fault
B. Mid-Atlantic Ridge
C. Andes Mts.
BOUNDARY
CONVERGENT
DIVERGENT
TRANSFORM
Match the
EXAMPLE
Letters
C
B
A
9. The Andes Mountains are located in Chile. The San Andreas Fault is in California.
10. According to the idea or the “theory of plate tectonics,” the surface of the earth is divided
into large sections called what? Tectonic Plates
11. Write three things happening at the Mid-Atlantic Ridge between the North American
Plate and the African or Eurasian Plates, in the middle of the Atlantic Ocean:
1. New crust is being formed
2. Volcanoes are erupting
3. The divergent boundary is moving apart & creates an ocean basin
12. In your own words define convection currents & how they make the plates of the
Lithosphere move:
The less dense hot magma moves upwards as the cooler, denser magma sinks creating the
convection currents. This causes the plates of lithosphere (crust) to move on top of the
asthenosphere.
13. The Nazca plate is made of only Oceanic crust & it collides with the S. American plate:
14. The North American plate consists of what type(s) of crust?
Continental Crust & Oceanic Crust
15. Label the Physical layers of the Earth below:
A. Lithosphere
B. Asthenosphere
C. Mesosphere
D. Outer Core
E. Inner Core
16. Label the three Chemical layers of the earth below:
17. We continue to have earthquakes and volcanoes because the surface of the earth
Is constantly ________________
A. spinning
B. changing
C. heating up
D. getting colder
18. The major result when plates move toward each other is the formation of mountains.
19. The major result when plates slide against each other is an earthquake.
20. The subduction zone is when one plate slides underneath another plate.
21. The major result when plates move away from each other is the creation of new crust
and the development of ocean basins.
22. Write the letter of the tectonic plate next to the corresponding name below.
23. What event do you predict will occur at the plate boundary shown above?
A. Mountain range formation
B. An earthquake
C. Trench formation
D. Volcanic island formation
Base your answer to the question on the map of the Mid-Atlantic Ridge shown
below. Line XY connects locations in North America and Africa.
24. In which cross section do the arrows best show the convection occurring
within the asthenosphere beneath line XY?
Choice B.
A.
C.
B.
D.
The diagram shows a model of the relationship between Earth’s surface and its
interior. Use this diagram and your knowledge of science to answer the
question.
25. The motion of the convection currents in the mantle beneath the Atlantic
Ocean appears to be mainly making this ocean basin:
A.
B.
C.
D.
Deeper
Shallower
Wider
Narrower