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Chapter 20 Review Mountain Building. Which section of the diagram best represents the most common elevation range of areas that are above sea level? 1.A.

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Presentation on theme: "Chapter 20 Review Mountain Building. Which section of the diagram best represents the most common elevation range of areas that are above sea level? 1.A."— Presentation transcript:

1 Chapter 20 Review Mountain Building

2 Which section of the diagram best represents the most common elevation range of areas that are above sea level? 1.A 2.B 3.C 4.D

3 Which factor would be most useful in predicting the amount of mantle a certain volume of crust will displace? 1.temperature of the mantle 2.density of the crust 3.chemical composition of the mantle 4.temperature of the crust

4 Which lists the types of convergent boundaries in order, from those that produce the smallest mountain belts to those that produce the largest mountain belts? 1.oceanic-oceanic; oceanic-continental; continental-continental 2.oceanic-continental; oceanic-oceanic; continental-continental 3.continental-continental; oceanic- continental; oceanic-oceanic 4.oceanic-oceanic; continental- continental; oceanic-continental

5 At time interval A on the timeline, ancestral North America separated from Ancestral Africa along two divergent boundaries. This was the beginning of which process? 1.formation of the Appalachian Mountains 2.formation of the Himalayas 3.formation of the Lesser Antilles 4.formation of the Adirondack Mountains

6 Which label best summarizes the trend represented by the arrow in the diagram? 1.increasing temperature 2.decreasing density 3.decreasing age 4.increasing density

7 The Lesser Antilles and the Appalachian Mountains are similar in that they were both formed. 1.by convergence 2.by faulting 3.by volcanoes 4.by oceanic plate movement

8 Which lists Earth materials in order of increasing density? 1.oceanic crust, continental crust, mantle 2.mantle, oceanic crust, continental crust 3.continental crust, oceanic crust, mantle 4.continental crust, mantle, oceanic crust

9 What is the difference between the average depth of the ocean and the average elevation of exposed land, as shown on the diagram? m m m m

10 Subduction zones form at 1.only oceanic-oceanic boundaries 2.only oceanic-continental boundaries 3.both oceanic-oceanic boundaries and oceanic-continental boundaries 4.neither oceanic-oceanic boundaries or oceanic continental boundaries

11 A good model for isostasy is 1.a collision between two cars 2.the water line of a boat when someone boards or leaves it 3.scraping food off a plate 4.stretching a cracked, old rubber band

12 In the process of isostatic rebound, mountains are eroded over hundreds of millions of years, while the crust below them 1.rises 2.sinks 3.splits to form a rift 4.converges at a boundary

13 After millions of years of erosion, the Appalachian Mountains still exist because of 1.continental drift 2.orogeny 3.erosion 4.isostatic rebound

14 Uplifted mountains 1.form when a large region of Earth’s crust rises up as a unit 2.have rocks that are not very deformed 3.are the result of erosional forces 4.all of the above

15 Fault-block mountains 1.form when two continental plates collide 2.form above a subduction zone 3.form when a large pieces of crust are dropped between large faults 4.all of the above

16 The Himalayas formed as the result of 1.hot spot volcanism 2.divergence on the ocean floor 3.continental-continental convergence 4.oceanic-oceanic convergence

17 At this type of boundary, a warming lithosphere bulges upward and is higher than the surrounding oceanic crust. 1.divergent boundaries 2.Europe 3.Pangaea 4.hot spots

18 The volcanic peaks of Hawaii formed as a result of these. 1.divergent boundaries 2.Europe 3.Pangaea 4.hot spots

19 Ancestral North America and ancestral Africa collided to form this supercontinent. 1.divergent boundaries 2.Europe 3.Pangaea 4.hot spots

20 Some of the rocks and geologic structures in this region are like those in the Appalachian Mountains. 1.divergent boundaries 2.Europe 3.Pangaea 4.hot spots

21 Mountains that form when large pieces of crust are tilted, uplifted, or dropped between large faults 1.fault-block mountains 2.isostatic rebound 3.orogeny 4.pillow basalts 5.isostasy 6.uplifted mountains

22 Billowy rocks that form when lava erupts onto the seafloor 1.fault-block mountains 2.isostatic rebound 3.orogeny 4.pillow basalts 5.isostasy 6.uplifted mountains

23 Cycle of processes that form mountain ranges 1.fault-block mountains 2.isostatic rebound 3.orogeny 4.pillow basalts 5.isostasy 6.uplifted mountains

24 Slow process of the crust’s rising after overlying material is removed 1.fault-block mountains 2.isostatic rebound 3.orogeny 4.pillow basalts 5.isostasy 6.uplifted mountains

25 Condition of equilibrium whereby Earth’s crust is balanced by the upward force of buoyancy and the downward force of gravity 1.fault-block mountains 2.isostatic rebound 3.orogeny 4.pillow basalts 5.isostasy 6.uplifted mountains

26 Mountains that form when large regions of Earth experience upward movement 1.fault-block mountains 2.isostatic rebound 3.orogeny 4.pillow basalts 5.isostasy 6.uplifted mountains

27 There are three dominant ranges of elevations on Earth. 1.True 2.False

28 Isostasy is an equilibrium between gravitational force and buoyant force. 1.True 2.False

29 Granite batholiths are associated with continental-continental plate boundaries. 1.True 2.False

30 The Himalayas are older than the Appalachian Mountains. 1.True 2.False

31 Ocean ridges form at convergent plate boundaries. 1.True 2.False

32 The Adirondack Mountains are classified as uplifted mountains. 1.True 2.False

33 Orogeny is a term that refers to all processes that form Earth’s crust. 1.True 2.False

34 The shaded area of this graph correctly shows the percentage of Earth’s surface that is below sea level. 1.True 2.False

35 The mantle has a greater density than continental crust. 1.True 2.False

36 The Grand Tetons are classified as fault block mountains. 1.True 2.False

37 Most of Earth's surface is above sea level. 1.True 2.False

38 Continental crust, because it is denser than oceanic crust, rises higher above Earth’s surface. 1.True 2.False

39 The volcanoes of an island arc complex form as a result of a(n) oceanic-continental convergence. 1.True 2.False

40 Uplifted mountains are regions of broad uplift that seem to be related to rising convection cells in the mantle. 1.True 2.False

41 About 70 percent of Earth’s surface is below sea level. 1.True 2.False

42 The seafloor displaces more of the mantle than the same thickness of the continental crust. 1.True 2.False

43 Isostasy between Earth’s mantle and crust exists when the mass of crust is rising as a result of buoyancy and gravity. 1.True 2.False

44 Mt. Everest is the tallest mountain on Earth, so it probably has the deepest root. 1.True 2.False

45 When mountains erode, their roots increase in size. 1.True 2.False

46 The Appalachian Mountains are an example of divergent- boundary mountains. 1.True 2.False

47 The Adirondack Mountains, which are made of rocks that show little deformation, are uplifted mountains. 1.True 2.False

48 Oceanic crust is composed mainly of basalt, and continental crust is composed mainly of granite. 1.True 2.False

49 Individual volcanic mountains on the ocean floor are called plates. 1.True 2.False

50 The tallest orogenic belts are found at continental-continental convergent boundaries. 1.True 2.False

51 Many mountain ranges are formed as the result of tectonic interactions. 1.True 2.False

52 Broad, uplifted plateaus, such as the Colorado Plateau, are regional divergent-boundary features of Earth’s crust. 1.True 2.False


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