Question

3. Why is it difficult to study the
formation of the earth and its
structure
4. Read the paragraph under the
heading of Internal structure of the
earth and answer
the question
How can you say the earth is still very
active
5. What is grid and how does it help
37 PM
US?​

Answer 1

Answer:  

3) It is difficult to study the structure of the Earth because the crust is too thick to drill all the way through. scientists need to study seismic waves made by earthquakes or man-made explosions.

4) The earth is still active because of some nature's activities still are on run. Example volcano eruption, earthquake, land sliding, raining, rise in the level of the mountains . The activeness is due to the activities performed in the crust of the earth.

5) It is an effective design which is generally to find a particular location of a place on the globe or map. A grid helps us to locate or find out the "exact location" of a place with detailed description of the latitudinal and the longitudinal extent of the place, on a globe or a flat map.

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