🌍 Class 7 Geography – Chapter 2
Inside Our Earth
NCERT Textbook Questions & Answers

---

Q1. What are the three layers of the Earth?

The Earth has three layers:

• Crust
• Mantle
• Core

---

Q2. What is the crust?

The crust is the outermost layer of the Earth.

• It is the thinnest layer
• Continents and oceans are found here
• It is made of rocks and soil

---

Q3. Describe the mantle.

The mantle lies below the crust.

• It is thicker than the crust
• It contains molten rocks called magma
• Volcanic activities originate here

---

Q4. What is the core made of?

The core is made mainly of:

• Iron
• Nickel

It is very hot and heavy.

---

Q5. What are rocks?

Rocks are natural masses of mineral matter that make up the Earth’s crust. They are useful for construction and help us understand Earth’s history.

---

Q6. Name the three types of rocks.

• Igneous rocks
• Sedimentary rocks
• Metamorphic rocks

---

Q7. How are igneous rocks formed?

Igneous rocks are formed when:

• Magma cools below the Earth’s surface
• Lava cools on the Earth’s surface

---

Q8. What are sedimentary rocks?

Sedimentary rocks are formed from layers of sediments.

• They are formed over a long period
• They often contain fossils

---

Q9. What are metamorphic rocks?

Metamorphic rocks are formed when existing rocks change due to:

• Heat
• Pressure

---

Q10. What is the rock cycle?

The rock cycle shows how one type of rock changes into another over time. It is a continuous process.

---

📌 Exam Tip:
Always write the names of layers and types of rocks in order. Use diagrams if allowed.

Prepared by Shaktimatha Learning 🌟
NCERT Aligned • Student Friendly • Exam Ready