Class 5 General Science (G.Sc.) Notes: - Unit-8: Structure of the Earth: Solved Exercise ( MCQs, Questions and Answers)

General Science (G.Sc.) Class 5 Notes

Based on the Single National Curriculum, PK

(New Book/New Syllabus for 2023-2024 Exams and onward)

National Book Foundation
as
Federal Textbook Boards, Islamabad

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"1. Tick ( ✓ ) the Correct Answers"

i. The outer layer of the Earth is called:

(a) the external core
(b) the mantle
(c) the crust
(d) the inner core

... Answer is (c)  the crust
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ii. What are the main types of soil?

(a) silt, sand, rock
(b) clay, humus, sand
(c) silt, sand, clay
(d) silt, humus, clay

... Answer is (c)  silt, sand, clay
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iii. which type of soil is good for growing plants?

(a) sandy
(b) silty
(c) clay
(d) rock

... Answer is (b) silty
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v. The amount of fresh water on the Earth is

(a) about 1%
(b) about 30%
(c) about 70%
(d) about 95%

... Answer is (a) about 1%
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vi. What is important in natural manure?

(a) minerals
(b) the decayed matter
(c) sand
(d) salts

... Answer is (b) the decayed matter
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2. "Write Short Answers"

Q(i) What is the outer layer of the earth? What is its importance in our life?

Ans: The outer layer of the Earth is called the crust. It is important in our life because we live on it. This part contains mountains, oceans, rivers, deserts etc. 

Q(ii). Which soil is useful for pottery? What are its properties? 

Ans: Clay is used to making pottery and bricks. Its properties are 

1. Clay particles are very small in size 

2. It is soft, sticky and brownish in colour.

3. It can hold more water. It is very hard when dry.

Q(iii) Which matter is obtained from the decayed plants and insects. 

Ans: The decayed plants and insects make humus. It makes the soil fertile. That is good for agriculture growing plants.

Q(iv) How much of the Earth's surface consists of oceans? Why can't we drink seawater?

Ans: 71% of the Earth's surface is covered with water. 2% is frozen. 97% is the salted water in the ocean. We cannot drink seawater because it has salt. 

Q(v) Where is The water found in the form of solid, liquid, and gas (vapour)? 

Ans: In the water cycle on Earth, water is found in solid, Liquid, and gas (vapours).

3. "Constructed Response Question"

Q(i). Label the diagram of the water cycle.

Q (ii). Which soil is used to plaster the village houses? which property of the soil is useful to do so? 

Ans: Clay is used to plaster the village houses because this soil is small in size, soft, and sticky. It holds more water. It becomes hard when dry. The wet clay can be moulded into any shape.

Q (iii). How do the plant's roots and other creatures inside the earth respire?

Ans: The texture of silt is smooth and silky. It can hold more water. The moisture present in this soil provides water and minerals to plants. The air present in this soil makes alive plants and other creatures.

Q (iv). How do the plant's roots and other creatures inside the earth respire?

Investigate

Q- Flash floods are extremely devastating. How can the excess of flood water be put to use?

Ans. 

The excess flood water can be stored in small reservoirs like ponds, Dams, water tanks to combat drought. It can also be used for agriculture and farming.

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1.  5th Class: English Notes

2.  5th Class: Social Study (S.St.) Notes

3.  5th Class: General Science (G.Sc.) Notes

4.  5th Class: Urdu (اُردو) Notes

5.  5th Class: Islamiyat (اسلامیات) Notes

6.  5th Class: Mathematics Notes

7.  Easy English Grammar Notes

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