MCQ Questions for Class 7 Geography Chapter 3 Our Changing Earth with Answers

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Our Changing Earth Class 7 MCQs Questions with Answers

Solving MCQ on Our Changing Earth Class 7 with Answers can be of great help to students as they will be aware of all the concepts. These Class 7 Geography Chapter 3 MCQ with Answers pave for a quick revision, thereby helping you learn more about this subject.

Question 1.
The place in the crust where the movement of the earth starts is called the:
(a) Focus
(b) Epicentre
(c) Point

Answer

Answer:


Question 2.
After the river enters the plain, it twists and turns forming large bends known as:
(a) Meanders
(b) Ox-bow lake
(c) Levees

Answer

Answer:


Question 3.
Large deposits of loess is found in:
(a) South Korea
(b) Malaysia
(c) China

Answer

Answer:


Question 4.
The highest waterfall of the world is:
(a) Niagara falls
(b) Angel falls
(c) Victoria falls

Answer

Answer:


Question 5.
Which waterfall is located on the border between Canada and USA in North America?
(a) Angel falls
(b) Niagara falls
(c) Victoria falls

Answer

Answer:


Question 6.
At what magnitude is earthquake classified as major earthquake?
(a) 2.0
(b) 5.5
(c) 7.0

Answer

Answer:


Question 7.
Which is caused by the sudden movements of the earth?
(a) Volcano
(b) Folding
(c) Flood plain
(d) All of these

Answer

Answer: (a) Volcano
Volcano is caused by the sudden movements of the earth. A volcano is a vent opening in the earth’s crust through that molten material erupts suddenly.


Question 8.
Where are Mushroom rocks are found?
(a) Deserts
(b) River valleys
(c) Glaciers
(d) Sea cliff

Answer

Answer: (a) Deserts
An active agent of erosion and deposition in the deserts is win(d) In deserts rocks are in the shape of a mushroom, commonly called mushroom rocks.


Question 9.
What is known as the steep rocky coast rising most vertically above the sea water?
(a) Sea cliff
(b) Glaciers
(c) Sea waves
(d) Stacks

Answer

Answer: (a) Sea cliff
The steep rocky coast rising most vertically above the sea water is called sea cliff. The sea waves deposit sediments along the shores forming beaches.


Question 10.
Where is the Angel falls located?
(a) South Africa
(b) South America
(c) South India
(d) None of these

Answer

Answer: (b) South America
There are thousands of small waterfalls in the worl(d) The highest waterfall is Angel Falls of Venezuela in South Americ(a)


Question 11.
What are the sudden movements in the earth crust are called?
(a) Focus
(b) Deposition
(c) Erosion
(d) Earthquake

Answer

Answer: (d) Earthquake
Endogenic forces sometimes produce sudden movements and at the other times produce slow movements. Sudden movements like earthquakes and volcanoes cause mass destruction over the surface of the earth.


Question 12.
What do you mean by a glacier?
(a) Moving of Layer of earth
(b) Moving of Soil
(c) Moving of ice
(d) None of these

Answer

Answer: (c) Moving of ice
Moving rivers of ice are called glaciers.


Question 13.
What are the types of earthquake waves?
(a) P wave
(b) S wave
(c) L wave
(d) All of the above

Answer

Answer: (d) All of the above
P wave and longitudinal waves, S wave or transverse waves and L waves or surface waves.


Question 14.
What do you know by Ox-bow Lakes?
(a) Lakes formed from animal participation
(b) Lakes for ox
(c) Cutting of meander loop from main rivers
(d) None of these

Answer

Answer: (c) Cutting of meander loop from main rivers
When the meander loop is cut off from the main river it forms a cut-off lake. As its shape is like an ox-bow, it is also known as ox-bow Lake.


Question 15.
What are sand-dunes?
(a) Low hill-like structures
(b) Big mountains
(c) Volcano
(d) None of these

Answer

Answer: (a) Low hill-like structures
Sand dunes are low hill-like structures formed by the deposition of sand in the deserts.


Question 16.
What do you mean by erosion?
(a) Moving of plates
(b) Type of exogenic forces
(c) Wearing away of landscape
(d) None of these

Answer

Answer: (c) Wearing away of landscape
Erosion is the wearing away of the landscape by different agents like water, wind and ice.


Match the following

1.

Column I Column II
1. Weather (a) Wearing away of the landscape by different agents
2. Erosion (b) Raised banks
3. Victoria falls (c) Breaking up of rocks
4. Levees (d) Collection of sediments
5. Delta (e) Zambia and Zimbabwe
Answer

Answer:

Column I Column II
1. Weather (c) Breaking up of rocks
2. Erosion (a) Wearing away of the landscape by different agents
3. Victoria falls (e) Zambia and Zimbabwe
4. Levees (b) Raised banks
5. Delta (d) Collection of sediments

Fill in the blanks

1. An earthquake is measured with a machine called ……………. .

Answer

Answer: seismograph


2. The lithosphere is broken into a number of plates known as the ……………. plates.

Answer

Answer: lithospheric


3. The ……………. forces act in the interior of the earth.

Answer

Answer: endogenic


4. The ……………. forces work on the surface of the earth.

Answer

Answer: exogenic


5. When the ……………. plates move, the surface of the earth vibrates.

Answer

Answer: lithospheric


6. The place above the focus is called the ……………. .

Answer

Answer: epicentre


7. The strength of the earthquake decreases away from the ……………. .

Answer

Answer: centre


8. The magnitude of the earthquake is measured on the ……………. .

Answer

Answer: Richter scale


9. The landscape is being continuously worn away by two processes ……………. and ……………. .

Answer

Answer: weathering, erosion


10. When the river tumbles at steep angle over hard rocks or down a steep valley side, it forms a ……………. .

Answer

Answer: waterfall


11. The raised banks are called ……………. .

Answer

Answer: levees


12. The erosion and deposition of the sea waves give rise to ……………. landforms.

Answer

Answer: coastal


13. ……………. are “rivers” of ice.

Answer

Answer: Glaciers


Picture Based Questions

1. In the following picture, identify Sea Cave, Sea Arch and Stack.

Answer

Answer:
MCQ Questions for Class 7 Geography Chapter 3


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