Inside the Earth
New Words
1. Exterior 11. Pollution
2. Interior 12. Lava
3. Rocks 13. Molten
4. Minerals 14. Depth
5. Surface 15. Temperature
6. Mantle 16. Excessive
7. Core 17. Plateaus
8. Crust 18.
Nickel
9. Globe 19. Peninsula
10. Layer 20. Geology
Question
and answers:
1.
What is the exterior of the
earth made up of?
Ans The exterior of the earth is made up of mountains,
plains, plateaus, valleys, desert etc.
2.
What is the interior of the
earth made up of?
Ans. The interior of the Earth is made up of rocks which are in a liquid or molten state.
3. Name the three layers
of the Earth.
Ans. The three layers of the Earth
are crust, mantle and core.
4.Name the two types of the core.
Ans. The types of the core are – outer core and inner core.
5.
What is the difference
between the outer and the inner core?
Ans
|
Inner core
|
Outer core
|
|
1.
It is in the solid state.
|
1.
It is in the liquid state.
|
|
2.
It consist of solid rocks
|
2.
It consist of liquefied rocks.
|
Fill in the blanks.
1.
The study of the interior of the
earth is known as geology.
2.
The deepest drill into the earth is
on the Kola
peninsula in Arctic Russia.
3.
The temperature and pressure inside
the earth increases with the depth.
4.
The molten state of rock is a thick liquid.
5.
The interior of the earth has excessive heat and high pressure.
6.
Our Earth is approximately 6400 km from its centre to the surface.
Give reasons:
1)The crust floats on mantle.
Ans:The crust floats on mantle because
the crust is made up of solid rocks and the mantle is made up of liquefied
rocks or molten rocks.
2)The structure of the interior of the
Earth can be compared to that of an apple or peach.
A)The crust of the earth can be
compared to skin , the mantle to the pulp and core with the
seed of the fruit.
3) The interior of the Earth is in
molten state.
A) The interior of the Earth is in
molten state due to excessive heat and pressure inside the Earth.
H.W. Draw the diagram to show the interior layers of the Earth.
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