Page 135 - SST Class 07

B. Fill in the blanks.

1. There are six major and 20 ______________ , all of which float independently.
2. The energy required to move these plates is produced by the internal __________ of the earth.
3. The science that deals with earthquakes is called ______________ .

4. ______________ volcanoes are also called living volcanoes.
5. ______________ is a mineral found in nature as sand or quartz.

C. Match the following columns.
Column A Column B
1. Pangaea (a) Richter Scale

2. Earthquake (b) Dormant Volcano
3. Ring of Fire (c) Supercontinent

4. Sleeping Volcano (d) Pacific Ocean
D. Distinguish between the following.
1. Focus and Epicenter 2. Dormant and Extinct Volcano

E. Write short notes on the following (in 30 words).
1. Pangaea 2. Active Volcanoes 3. Surface Waves

F. Answer the following questions.
1. Explain the concept of Plate Tectonics.
2. Explain the different types of forces.

3. How are volcanoes distributed on the earth?
4. Describe the different types earthquake waves.

5. Explain the major earthquake belts of the earth.
H TS Question
H TS Question
Why does the earthquake belt of the world coincide with the distribution of volcanoes?
Activity & ProjectActivity & ProjectActivity & ProjectActivity && ProjectProjectActivity & Project
Activity

On an outline map of the world, mark and label the following.
1. Volcanoes—Kilimanjaro, Fujiyama, Vesuvius, Etna, Rainier, Stromboli, Cotopaxi, Krakatoa
2. Major earthquake belts
Value Based Question
Value Based Question

Suppose, an earthquake strikes your area. What is the first thing you will do in such a situation?
Tick (3) from the given options.
w Try to collect all your belongings before moving out of the house.
w Lock the doors and windows and stay inside the house.
w In case you cannot come out of the house, hide yourself under a table.
w Immediately leave your house and move to an open area.

Social Science-7 135