Inside Our Earth

Match the following interior of the earth with their names representing their mineral constituents

Column IColumn 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 IColumn 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 IColumn II
(a) Cooling of molten magmaSedimentary 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
  1. ________ are used to make buildings.

    Answer: Hard rock
  2. ________ is an intrusive igneous rock.

    Answer: Granite
  3. The middle layer of the earth is the _____.

    Answer: Mantle
  4. Rocks change their form in a ____ manner.

    Answer: Cyclic
  5. Earth is a ______ place.

    Answer: Dynamic
  6. The earth is made up of several ______ layers.

    Answer: Concentric
  7. The innermost layer of the earth is called the _____

    Answer: Core
  8. When the magma solidifies deep inside the earth, _____ rocks are formed.

    Answer: Intrusive
  9. The crust is about _____ km on the continental masses and _____ km on the ocean floors.

    Answer: 35 km, 5 km

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