CBSE Class 7 - Geography - Chapter: Inside Our Earth (Worksheet)
Geography: Our Environment
Fill in the blanks with suitable words:
1. The uppermost layer over the earth's surface is called the ________.
2. The innermost layer is the core with a radius of about ________ km.
3. Any natural mass of mineral matter that makes up the earth's crust is called a _____.
4. When the molten magma cools, it becomes solid. Rocks thus formed are called _______ rocks.
5. These loose sediments are compressed and hardened to form layers of rocks. These types of rocks are called _________ rocks.
6. Igneous and sedimentary rocks can change into _________ rocks under great heat and pressure.
7. Sandstone is an example of _________ rocks.
8. The radius of the earth is _______ km.
9. When limestone (sedimentary rock) is exposed to heat and pressure it changes its physical and chemical properties and forms ________ (metamorphic rock).
10. Granite is an example of __________ igneous rocks.
11. Oceanic Crust is made up of silica and magnesium and is commonly called _____.
12. The core of the earth is mainly made up of nickel and ferrous (iron). It is commonly called ______.
Answers
1: crust
2: 3500
3: rock
4: igneous
5: sedimentary
6: metamorphic
7: sedimentary
8: 6371km or 6400 km (approx.)
9: marble
10: intrusive
11: sima
12: nife
ЁЯСЙSee Also:
Ch 1 (Geography) Environment
Geography - Indian States Touching International Borders
Ch 2 Inside Our Earth (Q & A)
Ch3 Our Changing Earth (NCERT Solution)
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