Inside Our Earth
Match the following interior of the earth with their names representing their mineral constituents
Column I | Column II |
---|---|
(a) Continental Masses | (i) Nife |
(b) Oceanic crust | (ii) Sial |
(c) Core | (iii) Sima |
Answer:(a) ii, (b) iii, (c) i
Match the following
Column I | Column II |
---|---|
(a) Basalt | (i) Sand grains |
(b) Granite | (ii) Deccan Plateau |
(c) Sanstone | (iii) Large grains |
Answer: (a) ii, (b) iii, (c) i
Match the following processes and their outcomes in the context of rock cycle
Column I | Column II |
---|---|
(a) Cooling of molten magma | Sedimentary rocks |
(b) Fragmentation, transportation and deposit of igneous rocks | (i) Igneous rocks |
(c) high heat and pressure on igneous and sedimentary rocks | (ii) Molten magma |
(d) continuous high pressure and heat on metamorphic rocks | (iii) Metamorphic rocks |
Answer: (a) ii, (b) i, (c) iv, (d) iii
Fill in the blanks
- ________ are used to make buildings.
- ________ is an intrusive igneous rock.
- The middle layer of the earth is the _____.
- Rocks change their form in a ____ manner.
- Earth is a ______ place.
- The earth is made up of several ______ layers.
- The innermost layer of the earth is called the _____
- When the magma solidifies deep inside the earth, _____ rocks are formed.
- The crust is about _____ km on the continental masses and _____ km on the ocean floors.
Answer: (1) Hard rock, (2) Granite, (3) Mantle, (4) Cyclic, (5) Dynamic, (6) Concentric, (7) Core, (8) Intrusive, (9) 35 km, 5 km