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Rocks and Rock Cycle — Flashcards

ICSE · Class 9 · Geography

40 flashcards for Rocks and Rock Cycle (ICSE Class 9 Geography) to test yourself on key terms and facts. Sample: "What is a rock?"

60 questions40 flashcards5 concepts

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A comparison chart highlighting the key differences between rocks and minerals, including composition, homogeneity, chemical structure, classification, and examples.
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40 Flashcards·
Introduction to rocksRocks and mineralsTypes of rocksIgneous rocks
Card 1Introduction to rocks

What is a rock?

Answer

A rock is an aggregate of minerals that forms a more or less definite unit of the Earth's crust. Rocks may contain one mineral or many minerals together.

Card 2Rocks and minerals

How are rocks different from minerals?

Answer

Rocks are heterogeneous and do not have a definite chemical composition. Minerals are homogeneous, have a definite chemical composition, and generally have a crystalline form. Silicates and quartz are…

Card 3Introduction to rocks

What does the word lithosphere mean in geography?

Answer

The lithosphere is the outer crust of the Earth on which the continents and ocean basins rest. The word 'litho' in Greek means rock or stone.

Card 4Types of rocks

What are the main types of rocks?

Answer

The three main types of rocks are igneous rocks, sedimentary rocks, and metamorphic rocks. These differ in origin, structure, and formation process.

Card 5Igneous rocks

Why are igneous rocks called primary rocks?

Answer

Igneous rocks are called primary rocks because they are the parent material of all rocks in the rock cycle. They form by the solidification of magma.

Card 6Igneous rocks

What is magma?

Answer

Magma is molten rock material consisting of liquid, gas, and crystals. It is the source material for igneous rocks.

Card 7Igneous rocks

Name the two types of magma and describe them.

Answer

The two types of magma are Basalt Magma and Silicate Magma. Basalt Magma is very hot and highly fluid. Silicate Magma is about 850°C and highly viscous.

Card 8Igneous rocks

How do intrusive igneous rocks form?

Answer

Intrusive igneous rocks form when magma solidifies below the Earth's surface, surrounded by pre-existing rock. Slow cooling at depth usually produces coarse-grained rocks.

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Frequently Asked Questions

What are the important topics in Rocks and Rock Cycle for ICSE Class 9 Geography?
Key topics in Rocks and Rock Cycle include Rocks, Minerals, and Lithosphere, Igneous Rocks, Sedimentary Rocks, Metamorphic Rocks. Study these first, then practise questions on each for Class 9 exams.
How many flashcards are available for Rocks and Rock Cycle?
There are 40 flashcards for Rocks and Rock Cycle covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Rocks and Rock Cycle for Class 9 exams?
Learn the core ideas first, then work through the 60 practice questions on Rocks and Rock Cycle. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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