AHSEC| CLASS 11| GEOGRAPHY| SOLVED PAPER - 2023| H.S.1ST YEAR

 

AHSEC| CLASS 11| GEOGRAPHY| SOLVED PAPER - 2023| H.S.1ST YEAR

2023
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 (any seven): 1x7=7

(a) Who among the following geographers developed the regional geography approach?

(i) Alexander von Humboldt

(ii) Karl Ritter

(iii) Aristotle

(iv) Galileo

(b) Which one of the following is not a physical feature?

(i) Mountain

(ii) Lake

(iii) Port

(iv) Plateau

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

(i) P wave

(ii) S wave

(iii) Body wave

(iv) Surface wave

(d) Which one of the following is the northernmost range of the Himalayas?

(i) Ladakh

(ii) Zaskar

(iii) Shivalik

(iv) Karakoram

(e) Which one of the following provides detail picture of the layers of the earth's interior?

(i) Volcanoes

(ii) Earthquake waves

(iii) Gravitational force

(iv) Earth magnetism

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

(i) Granite

(ii) Gabbro

(iii) Limestone

(iv) Quartzite

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

(i) Nagaland

(ii) Mizoram

(iii) Meghalaya

(iv) Manipur

(h) Which one of the following is the largest peninsular river system of India?

(i) Mahanadi

(ii) Godavari

(iii) Narmada

(iv) Kaveri

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

(a) Mention the names of two plates as mentioned in the theory of Plate Tectonics.

Ans:- The Pacific Plate, North American Plate.

(b) Mention any two groups of weathering processes.

Ans:- Weathering is a long, gradual process that occurs continuously on the Earth's surface.

Weathering is classified into two types: Mechanical and Chemical.

(i) Mechanical weathering is the process through which external factors, such as water freezing in rock cracks, break rocks into smaller pieces.

(ii) Chemical weathering occurs when rock interacts with rain, water and the environment, destroying chemical and mineral links and forming new minerals.

(c) Write the names of the lowermost and the uppermost layers of the earth's atmosphere.

Ans:- Troposphere. Almost all weather occurs in this region, called the lower atmosphere. The troposphere begins at the Earth's surface, but the height of the troposphere varies.

The uppermost layer of the earth is called the earth's crust. It is approximately 35 km on the continental mass and 5 km at sea level.

(d) Mention two types of moraine deposits in glacial valleys.

Ans:- (i) Lateral moraines: Low peaks on each side of the glacier are formed mainly by rocks falling from the valley walls.

(ii) Medial Moraine: When two valley glaciers merge and lateral moraines join together, a ridge is formed in the middle of the glacier.

(e) Mention two factors which cause variations in insolation.

Ans:- Factors causing variation in insolation:

(i) The angle of inclination of the Earth.

(ii) Revolution of the earth.

(f) Name two factors affecting the velocity and direction of wind.

Ans:- There are two factors affecting the speed and direction of wind:-

(i) Pressure gradient force: The difference in atmospheric pressure produces a force. The rate of change of pressure with respect to distance is known as the pressure gradient.

(ii) Friction force: It affects the movement of air. Friction is maximum on the surface and minimum on the sea surface.


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