WORKSHEET-1 - Chapter 2 – “Inside Our Earth”

 

📘 READING COMPREHENSION WORKSHEET
Subject: Geography | Class: 7 CBSE | Chapter 2 – “Inside Our Earth”
Student Name: Subhangam

📝 PASSAGE REFERENCE

(The questions below are based on the passage you read about the interior of the Earth.)

SECTION A: OBJECTIVE TYPE QUESTIONS

Q1. Choose the correct option:
1. The Earth is made up of several concentric layers, like a:
a) book
b) sandwich
c) onion
d) balloon
Answer: _________

2. The outermost layer of the Earth is called the:
a) core
b) mantle
c) surface
d) crust
Answer: _________

3. The crust is made mainly of:
a) iron and nickel
b) silica and alumina
c) hydrogen and oxygen
d) calcium and carbon
Answer: _________

4. The layer just beneath the crust is called the:
a) inner core
b) mantle
c) outer core
d) surface
Answer: _________

5. The central core is made up of:
a) gold and silver
b) iron and copper
c) nickel and iron
d) lead and zinc
Answer: _________

SECTION B: FILL IN THE BLANKS

Q2. Fill in the blanks with appropriate words from the passage:

1. The Earth is a __________ planet because it is constantly undergoing changes.

2. The oceanic crust is mainly made up of __________ and __________.

3. The total depth of the mantle is about __________ km.

4. The innermost layer of the Earth is called the __________.

5. The crust is about __________ km thick on the continental masses.

SECTION C: TRUE OR FALSE

Q3. Write True or False:

1. The crust is the thickest layer of the Earth. ______

2. The central core of the Earth has high temperature and pressure. ______

3. The Earth has only two layers inside it. ______

4. Sima is made of silica and alumina. ______

5. The mantle lies between the crust and the core. ______

SECTION D: SHORT ANSWER QUESTIONS

Q4. Answer the following in one or two sentences:

1. Why is the Earth compared to an onion in the passage?
   Ans: _______________________________________________________

2. What is the difference between sial and sima?
   Ans: _______________________________________________________

3. What materials make up the core of the Earth?
   Ans: _______________________________________________________

4. How thick is the crust on the ocean floor?
   Ans: _______________________________________________________

5. What is the total radius of the Earth's core?
   Ans: _______________________________________________________

SECTION E: THINK AND ANSWER

Q5. Why do you think the temperature and pressure are very high in the core of the Earth?
Ans: ___________________________________________________________

Answer Key to the Reading Comprehension Worksheet on the passage from Chapter 2: Inside Our Earth.

✅ ANSWER KEY

SECTION A: OBJECTIVE TYPE QUESTIONS

1. c) onion

2. d) crust

3. b) silica and alumina

4. b) mantle

5. c) nickel and iron

SECTION B: FILL IN THE BLANKS

1. dynamic

2. silica and magnesium

3. 2900

4. core

5. 35

SECTION C: TRUE OR FALSE

1. False

2. True

3. False

4. False

5. True

SECTION D: SHORT ANSWER QUESTIONS

1. The Earth is compared to an onion because it is made up of several concentric layers, one inside the other.

2. Sial is made of silica and alumina (found in continental crust), while sima is made of silica and magnesium (found in oceanic crust).

3. The core is mainly made up of nickel and iron.

4. The crust on the ocean floor is about 5 km thick.

5. The total radius of the Earth's core is about 3500 km.

SECTION E: THINK AND ANSWER

The temperature and pressure are very high in the core because it lies deep inside the Earth, where intense gravitational pressure and leftover heat from Earth’s formation are concentrated. This makes the core extremely hot and under immense pressure.