Question

47. Descent of the edge of a lithospheric plate

under an adjoining plate and into the

asthenosphere

a. subduction b. conduction c. uplift d. deception

48. Amount of energy released by an earthquake is

called its _________

a. lava b. subduction c. magnitude d. focus

49. Any body of intrusive igneous rock that has

solidified below the surface, enclosed in preexisting

rock is called ______

a. neutron b. pluton c. proton d. garfieldon

50. The point within the earth where a fault first

slips to cause an earthquake

a. focus b. epicenter c. hotspot d. lava

51. Corrugations of strata caused by crustal

compression

a. fold b. horst c. graben d. caldera

52. Crustal block that is pushed up between two

normal faults is called

a. horst b. graben c. caldera d. magma

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53. The U shaped base of folds in the earth’s crust is

called

a. anticline b. syncline c. decline d. halocline

54. Arch in folds of the earth’s crust is called

a. anticline b. syncline c. decline d. halocline

55. A crustal block dropped between two normal

faults is called

a. horst b. fold c. graben d. halocline

56. Location on the earth’s surface directly above

where a fault slipped to produce an earthquake

a. focus b. epicenter c. anticline d. syncline

57. Trembling and shaking of the ground produced

by movements along a fault is called

a. tornado b. tsunami c. earthquake d. hurricane

58. Which of the following features can be

associated with volcanoes?

a. conical shape b. isolated or part of a long

mountain range c. often found near continental

coastlines d. all of these

59. Hot-spot volcanoes can:

a. rise up from the ocean floor b. be found on

continents c. form in the interior of tectonic plates

d. all of these

60. Mafic lava is composed mostly of:

a. magnesium and silica b. silica and iron

c. magnesium and iron d. silica

Answer 1

Ans. 47

When the heavier plate goes under the lighter plate, this process is called as subduction.

Ans 48.

The energy released by an earthquake is called as its magnitude.

Ans 49.

It is called as plutonic igneous rock when a slab is inserted and solidified at a greater depth.

Ans 50.

It is called as focus.

Ans 51.

It is called as fold where stratas are compressed to form a fold like structure.

Ans 52.

Horst is the correct answer while Graben is just opposite to it. Do not get confused between two.

Ans 53.

It is called as syncline while opposite to it is anticline.

Ans 54.

The correct answer is anticline

And 55.

Graben is the correct answer

Ans 56.

On the surface this point is called as an epicenter which is right above the focus.

Ans 57.

The correct answer is earthquake

Ans 58.

All of these are correct, since a volcano can be of conical shape (Parasite etc), It is found when collision occurs at continental margins. Thus, all are correct

Ans 59.

Correct answer is all of these. A hot spot just need a source of energy and can be located at any place.

Ans 60.

It is mainly composed of Magnesium and Iron as the name suggests (Ma + Ferric)

I hope all the answers are clear to you now, if you have any query further, please leave a comment, I will try my best to solve it for you Good Luck