Q9 of 39 Page 100

Higher Order Thinking Questions (Hots)

Scientists use GPS to measure the rate of Tectonic Plate movements. Discuss.


The scientist usually uses GPS to measure the Tectonic Plate movements. Each plate on the earth rotates the ‘pole' and each plate has different speed of GPS station.GPS station which records the exact distance between the satellite and ground station. By recording the time it takes for the GPS ground stations to move a given distance, therefore the scienti8st can measure the exact speed at which tectonic plate move.


More from this chapter

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8

Map Skill:

On the given outline map of the world, mark the following:


a. Pacific Ring of fire


b. Earthquake-prone zones (any two)


c. Locate any two active volcanoes of the world.


d. Himalayas and Alps ranges


e. Rift valley of East Africa.


 9 A

Higher Order Thinking Questions (Hots)

Consider the various sources of information related to the Earth’s Interior. Classify the above as DIRECT & INDIRECT sources of information. Give reasons



 10

Life Skills

Imagine that you feel tremors or shocks in your locality. What will be your role in saving lives from destruction? List out the Do’s and Don’ts.


 11

TRY IT


Across:


1. The major elements of the mantle.


2. Fractures that are formed when crustal rocks are displaced.


3. These waves are the most destructive seismic waves.


4. The other name of Core.


5. These waves are generated when Earthquake occurs.


Down:


6. This occurs due to endogenic movements.


7. Bowl-shaped depression found at the top of a volcano.


Up:


8. The point on the Earth's surface where the Earthquake is measured.


9. Large seismically generated sea waves.