Question

THE INTERIOR OF THE EARTH

I. Fill in the blanks.

1. The innermost part of the Earth is called the ________________ .

2. The upper mantle extends from _____________ km to _____________ km below the surface of the

Earth.

3. The continuous process of leveling of the Earth’s surface by natural forces is called _____________.

4. Sandstone is an example of __________________ rock.

5. Nife is made up of the two minerals ________________ and ________________.

II. Match the following.

1. Upper mantle a. 3500 km

2. Core b. Metamorphic rocks

3. Crust c. igneous rocks

4. Gneiss d. Sial

5. Basalt e. Sima

III. Multiple Choice Questions.

1. The crust is the thinnest

a. under the continents

b. under the seas

c. under the mountains

d. under the rivers

2. Organic minerals are formed from

a. minerals like iron and aluminium

b. hot lava

c. deposition of sediments carried by water, ice and wind

d. dead and decayed animal and plant material trapped underground. 3. Which of these is a fossil fuel?

a. Iron

b. Nickel

c. Basalt

d. Natural gas

4. Mineral and rocks are used for

a. making jewellery

b. pottery

c. construction

d. all of these

5. Rocks that change completely due to heat and pressure are

a. sedimentary rocks

b. igneous rocks

c. metamorphic rocks

d. fossilised rocks

IV. State true or false.

1. The crust is made up of silicates of aluminum, potassium and sodium.

2. The lower mantle is made up of a thin stiff layer of minerals like silica and magnesium.

3. The temperature in the core of the Earth is greater than the temperature on the Sun’s surface.

4. Fossil fuels are easily renewable because they are the dead and decayed remains of living things.

5. Sedimentary rocks are generally formed in lakes, rivers and oceans.

V. Answer these questions in a sentence or two.

1. How are igneous rocks formed? Give an example.

2. Why are sedimentary rocks formed in layers?

3. Explain the rock cycle with the help of a diagram..​

Answer 1

Answer:

fill in the blanks

Question 1 . core

question 4

answer sedimentary rock

multiple choice question

question 1

answer . under the continents

Explanation: