Name _______________________
5th Six Weeks Test Review Key
1. Name Hess’s theory that ocean plates were moving apart. ____Sea Floor Spreading__________
2. Describe the evidence that supports what Wegener thought about the continents.
______Continents fit together like a jigsaw, fossils were common on different continents, and
mineral and mountain belts matched on diff. continents______
3. Describe the Arthur Holmes’ Convection Currents Theory.
_____Wheel-like currents of rising heat are causing the earth’s plates to move _____
4. The main features of Plate Tectonics are: ________ the lithosphere is broken into plates and are
moving due to convection within the earth’s interior._______________
5. What was Wegner’s claim about the continents? _____ Continents fit together into one
landmass called Pangaea __________What did he name his claim? __Continental Drift _
6. Which type of plate boundary that forms fault lines? ____Transform______Sketch:
7. Which type of plate boundary that forms a mid-ocean ridge?_____Divergent____Sketch:
8. Which type of boundary that forms mountains? ____Convergent________Sketch:
9. Continental mountains are formed by what type of collision?_______Continental/ Continental
Convergence_____________
10. Where do convection currents occur? _______Ocean currents, Atmosphere, and Asthensphere_
11. Describe how convection causes plate movement.______ Heat within the mantle is rising, then
cooling and sinking creating convection currents which are causing the tectonic plates to
move _______________
12. What do you call the sinking of ocean crust into the asthenosphere? ______Subduction_________
13. Name the part of earth that is divided into tectonic plates. ____Lithosphere_______
14. What is the elevation at each point? A __615___ B _625__ C _655____ D _632____
15. What do “V” bends on a topographic map represent? ___stream or river valley – “v” points
uphill________
16. What do closely spaced contour lines on a topographic map represent? ___steep slopes___
widely spaced contour lines? ___gentle slopes______
17. What do circles on a topographic map represent?_______hill tops_________
18. Describe a delta, including how it forms.________Deltas are triangular deposits of sediment
found at the mouth of a river. They are formed due to deposition.________________
19. How does a valley get its shape? ____valleys are carved by weathering and erosion due to the
flow of a river or the movement of a glacier_________
20. What causes convection within the atmosphere? __Uneven heating of the earth’s surface_____
Describe what occurs during convection. _____Heated air around the equator rises, cools in
the upper atmosphere and sinks as it moves to higher latitudes__________________
21. What type of weather occurs when a low pressure area is present? ___rainy_____
22. What type of weather occurs when a high pressure area is present? ____clear_______
23. What process causes wind? ___Convection_____ Describe the motion of the air.
______Heated air over the land rises and cool air from over the ocean rushes in to replace it______
24. From which region of the earth do all cold air masses originate?______Polar_____ and from
which regions will warm air masses originate? _____Tropical________
25. Which type of front occurs when warm air masses are pushed upward by cold air masses?
_______________Cold Front_________________________
26. Which type of front occurs when warm air masses lie over cold air masses gradually moving
the cold air? _________________Warm Front_____________________________
27. Where do maritime (moist) air mass originate?________over oceans____________
28. Where do continental (dry) air mass originate? _________over land_______________
29. Which type of current passes land and creates a warmer than normal climate? ________warm
surface currents_________ and which type would create cooler than normal climate ?
_______cold surface currents_____________
30. Where do hurricanes get their strength? ______over warm oceans____________
31. What term describes the amount of water vapor in the air? _____humidity______
32. Where on a continent would you experience the most amount of moisture in the air?
__________near the coast (evaporation)_______________________
33. Which type of current forms due to cold water with high density? _____Deep Ocean
Currents______
34. Oceans impact climate on the coastlines by:
Making very hot summers ___cooler____ than they would’ve been
and very cold winters ____warmer_____ than they would’ve been.