Interior of the Earth — Geography STD 8 — Question

Do this activity when you go to the seashore with your parents or teachers. Observe the materials which have come with the waves. Classify them as per the flowchart given below:
(1) What will happen because of non-perishable items?
(2) Suggest measures to control deposition of non-perishable items on the coast.
(3) How will you run a campaign of environmental conservation to keep the coasts clean?

(1) What are the major types of ocean currents?
(2) What do you call the currents flowing from the equator to the poles?
(3) What do you call the currents flowing from the poles to the equator?
(4) When the currents are moving in a circular manner, what difference is visible in their direction in Northern and Southern Hemisphere respectively?
(5) What might happen at the places where these two currents meet?
(6) When two different types of currents meet along the coast then what type of human settlements and occupations are seen?

What are the problems in area of low population densities?

Magnetic pole and equator

The interior of the earth

(1) Which are the land uses of 1990-91 that show decline in 2010-11? What could be reasons for this?
(2) Which type of land use is the maximum? What would be the impact of this on India’s environment?
(3) Can a decline in the area under agriculture equated with food shortage?

1) At what depth does the curve of the secondary waves seem to have ended in figure (A)?
2) What is the velocity of the secondary waves around the boundary of the outer core shown in figure (A)?
3) What conclusion can be drawn on the basis of the curve of the secondary waves stopping around the depth of 2900 km?
4) What is the velocity of the primary waves at the time of entering the outer core shown in figure (A)?
5) What conclusions can be drawn about the intensity of the gravitational force shown in Figure (B)?

Study the following figure showing the factors affecting the location of an industry. Taking into account the factors shown in the figure, note in different colours the favourable factors required for (1) Iron and steel (2) Textiles and (3) Sugar industry and answer the following questions:

(1) For each industry, prepare a list of necessary factors.
(2) For each industry give an explanation for the location suggested by you.
(3) In a similar manner for which other industries can you decide a suitable location?

In Figure, the sequence of two industrial processes has been given. Arrange the pictures in proper sequence and write the sequential number in the boxes given below and answer the following questions:

(1) Name the two industries.
(2) Name the raw material and the finished product of both these industries.
(3) How is the raw material converted into the finished product?
(4) Why is it necessary to convert the raw material into finished goods?

What are the aspects considered in the structure of population?