Rock cycle is the changing of rocks from one form to another in a cyclic manner.
to change into
EXERCISES
(d) Magma
(b) Igneous
&Y Marble
A. Choose the correct answer.
1. Which of the following is not a layer of the Earth?
(a) Mantle
(b) Crust
(c) Core
2. Which igneous rock is found below the Earth's surface?
by intrusive (b) Extrusive (c) Volcanic (d) Sedimentary
3. What type of rock is coal?
(a) Metamorphic
( Sedimentary (d) None of these
Which of the following is an example of metamorphic rock?
(b) Sandstone (c) Granite
(d) Basalt
5. Which of the following is used as building material?
(b) Coal
(c) Basalt
(d) Chalk
8. Fill in the blanks.
1. The crust can be divided into two parts called
and
2. Magma is found in the
of the Earth
3.
have definite chemical composition.
4. Igneous rocks are made of molten
5. The transformed rocks formed due to excessive heat and pressure are called
ex Granite
rocks.
Write T for True and F for False statements.
Answers
Answer:
1 . all are correct
2. intrusive
3.none of these
basalt
basalt
1. inner crust and outer crust
2 inner surface
3. mixture
4.t
5t
Answer: The process of transformation of rocks from one type to another, under specific conditions and in a cyclic manner, is called a rock cycle. For example, when the molten magma cools; it solidifies to become igneous rock.
A.1) CORE
2. INTRUSIVE
3. SEDIMENTARY
4. MARBLE
5. BASALT
8.1) Earth’s crust is divided into two types: oceanic crust and continental crust.
2. Magma hot liquid and semi-liquid rock located under Earth’s surface. When magma flows onto Earth’s surface, it is called lava.
3. With a definite chemical composition (every time we see the same mineral it has the same chemical composition that can be expressed by a chemical formula) and a characteristic crystalline structure (atoms are arranged within the mineral in a specific ordered manner).
4. MAGMA
5. ex Granite rocks.