AHSEC| CLASS 11| GEOGRAPHY| SOLVED PAPER - 2024| H.S.1ST YEAR

 

AHSEC| CLASS 11| GEOGRAPHY| SOLVED PAPER - 2024| H.S.1ST YEAR

2024
GEOGRAPHY
Full Marks: 70
Pass Marks: 21
Time: 3 hours
The figures in the margin indicate full marks for the questions

 

1. Find out the correct answer of the following: 1×7=7

(a) The lowermost layer of the atmosphere is

(i) stratosphere

(ii) mesosphere

(iii) troposphere

(iv) ionosphere

(b) Which two layers of the earth's interior are separated by Moho's discontinuity?

(i) Sial and Sima

(ii) Inner core and outer core

(iii) Mantle and crust

(iv) Sial and crust

(c) Which one of the following earthquake w waves considered as most damaging?

(i) P-wave

(ii) S-wave

(iii) Body wave

(iv) Surface wave

(d) In which of the following States the Loktak Lake is situated?

(i) Assam

(ii) Mizoram

(iii) Manipur

(iv) Meghalaya

(e) Which one of the following rivers is known as the 'sorrow of Bihar'?

(i) Gandak

(ii) Kosi

(iii) Son

(iv) Yamuna

(f) Which one of the following is a sedimentary rock?

(i) Granite

(ii) Limestone

(iii) Quartzite

(iv) Gabbro

(g) Erosional work is more in which part of a river?

(i) Upper stage

(ii) Lower stage

(iii) Middle part

(iv) All of the above

2. Give short answers of the following (any eight): 2x8=16

(a) Name two biosphere reserves of Assam.

Ans:- Two Biosphere Reserves of Assam:-

(i) Manas National Park.

(ii) Dibru-Saikhowa National Park.

(b) What is Coriolis force?

Ans:- The Coriolis force is a fictitious force that arises from the rotation of the Earth. It deflects moving objects on Earth, such as air masses and ocean currents, from their intended path, resulting in curved trajectories. In the Northern Hemisphere, this deflection occurs to the right, while in the Southern Hemisphere, it occurs to the left.

(c) Write two characteristics of old stage of river.

Ans:- Two characteristics of the old stage of a river:-

(i) Winding course: Old rivers often have a winding course due to erosion and deposition over time.

(ii) Formation of deltas or floodplains: As rivers reach their final stages, they deposit sediments, forming deltas or broad floodplains.

(d) Name two soil-forming factors.

Ans:- Two soil forming factors:-

(i) Climate

(ii) Parent material (parent rock from which soil is formed).

(e) What is rock cycle?

Ans:- The rock cycle is a continuous process that describes the transformation of rocks from one type to another through geological processes. It includes the formation of igneous, sedimentary and metamorphic rocks through processes such as melting, cooling, erosion, sedimentation and metamorphism.

(f) Write two effects of earthquake.

Ans:- Two effects of earthquakes:-

(i) Ground shaking and surface rupture: Earthquakes cause ground shaking, which may cause surface ruptures and structural damage.

(ii) Tsunamis and landslides: In coastal areas, earthquakes can trigger tsunamis, while in mountainous areas, they can cause landslides.

(g) Name two different expressions of humidity.


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