Solution – Model Activity Task Class 8 Geography Feb – 2022

Model Activity Task Class 8 Geography Feb 2022 has been released by the School Education Department of West Bengal . Here you will find the answers of the Model Activity Task Class 8 Geography Feb 2022 with full answers and proper explanation .

Model Activity Task Class 8 Geography

Model Activity Task are very important for the students of School of West Bengal . These Model Activity Task are useful to know how much knowledge a student has acquired . Here you will get Model Activity Task Class 8 Science Subject Solutions of the February Month .

Model Activity Task ClassClass 8
Model Activity Task SubjectEnvironment and Geography
Time PeriodFebruary 2022
Language English
Download Questions pdf
(Answer is provided below this table )
Model Activity Task Class 8 Geography February 2022

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Model Activity Task Class Geography February 2022 Solutions

The below are the answers and explanation of each and every question of Model Activity Task Class 8 Geography Subject for the Month of February 2022.

Model Activity Task
Class – VIII
Environment and Geography
Full Marks : 20

Q1. Choose the correct answer from the given alternatives: 1×3=3
1.1 The continental drift theory was first advocated by –
(a) Morgan
(b) Pichon
(c) Parker
(d) Wegener.
Answer and Explanation : Option [d] “Wegener″ is the Correct Answer.

1.2 The Andes Mountains of South America have been formed due to the –
(a) collision between two continental plates
(b) collision between continental plate and oceanic plate
(c) collision between two oceanic plates
(d) opposite movement of two continental plates.
Answer and Explanation : Option [b] “collision between continental plate and oceanic plate″ is the Correct Answer.

1.3 The great amplitude of high wave lash on the coastal area due to earthquakes originated under the sea is known as –
(a) geyser
(b) magma
(c) tsunami
(d) volcanism.
Answer and Explanation : Option [c] “Tsunami″ is the Correct Answer.

Q2.1. Match column A with column B:

Column AColumn B
Constructive plate boundaryExtinct volcano
PahoehoeDivergence of two plates
Mount PopaLava

Answer and Explanation :

Column AColumn B
Constructive plate boundaryDivergence of two plates
Mount PopaExtinct volcano

Q2.2 Answer in one or two words: 1×2=2
2.2.1 On which plate boundary crust is neither produced nor destroyed?

Answer and Explanation :
Neutral Plate Boundary.
Earth Crust is neither produce nor destroyed on Neutral Plate Boundaries.

2.2.2 Which seismic wave can travel through three states of matter?

Answer and Explanation :
Primary Seismic Waves.
The seismic waves that can travel through three state of matter ( Solid, liquid, gas) are Primary Seismic Waves.

Q3. Answer the following questions briefly: 2×2=4
3.1 Why is convergent plate boundary known as destructive plate boundary?

Answer and Explanation :
When two layers starts moving towards each other , then this type of collision of boundaries is called convergent plate boundary.

But one point is to be considered that heavy layer descends to bottom and one ascends to upwards. As a result the heavy layer melts in extreme heat . This is known as Destructive plate boundaries.

3.2 What is the difference between the focus and epicentre of an earthquake?

Answer and Explanation :

Focus of an EarthquakeEpicentre of Earthquake
Focus is the point below the surface of earth. Its the point from where the earthquake originates. Epicentre is the point on earth surface directly above focus of earthquake.
It is located deep in the crustIt is located on the earth’s surface.

Q4. Answer the following question: 3×1=3
Why is the “Pacific Ring of Fire” earthquake prone?

Answer and Explanation :
Most of the living volcanoes of the world are encircled by the Pacific Ocean. Most of the volcanoes are very prone to earthquakes because they are located in the basin. This is why the Pacific Ocean Volcano is very earthquake prone.

Q5. Answer the following question: 5×1=5
Explain with diagram the formation of fold mountain due to the collision of two plates.

Answer and Explanation :
When a collision occurs between two moving layers, pressure on the boundary sediment forms a fractured mountain.
1. Formation of fractured mountains at the boundary of two continental plains: Usually there is a long deep sea or a gulf between two continental plains.
2. Formation of fractured mountains on the continental shelf: When relatively heavy oceanic sheets enter beneath the continental sheets, the sheets are curved like a bow at the border. The Rocky and Andes Mountains formed by the collision of the Pacific Ocean l