Worksheet: The Interior of the Earth | Window on the Word Class 7: Solutions, Notes & Worksheets PDF Download

Q1: Multiple Choice Questions (MCQs)

(i) What are the three main layers of the Earth?
(a) Crust, Mantle, Inner Core
(b) Core, Lithosphere, Asthenosphere
(c) Mantle, Oceanic Crust, Continental Crust
(d) Crust, Mantle, Core

(ii) Which type of rock forms from cooled and solidified lava?
(a) Sedimentary
(b) Metamorphic
(c) Igneous (extrusive)
(d) Igneous (intrusive)

(iii) What is the composition of the continental crust?
(a) Silica and Aluminium
(b) Silica and Magnesium
(c) Nickel and Iron
(d) Iron and Aluminium

(iv) Which layer of the Earth is predominantly semi-solid molten rock?
(a) Core
(b) Mantle
(c) Crust
(d) Inner Core

(v) What type of rock is formed when intense heat and pressure transform existing rocks?
(a) Sedimentary
(b) Metamorphic
(c) Igneous (extrusive)
(d) Igneous (intrusive)

Q2: Fill in the Blanks

(i) The thinnest layer of the Earth is the ____________.
(ii) The Earth's core is primarily composed of ____________ and ____________.
(iii) ____________ rocks are formed when magma gets trapped under the crust and cools down slowly.
(iv) Limestone is an example of a ____________ rock.
(v) Metallic minerals are mainly found in ____________ rocks.

Q3: Match the Column

Q4: True or False

(i) The mantle makes up over three-fourths of the Earth's volume.
(ii) The oceanic crust is thicker than the continental crust.
(iii) Sedimentary rocks are primarily formed from cooled magma.
(iv) Marble is an example of an igneous rock.
(v) Metallic minerals are mainly found in sedimentary rocks.