The place inside the earth's crust where the earthquake is generated is called :

Options

A. seismic zone of the earth
B. epicentre of the earthquake
C. fault zone of the earth
D. focus of the earthquake

Answer

To solve the question about the place inside the Earth's crust where an earthquake is generated, we can follow these steps:

### Step 1: Understand the Earth’s Structure
The Earth is composed of several layers, including the crust, mantle, outer core, and inner core. The crust is the outermost layer where we live.

**Hint:** Think about the different layers of the Earth and where seismic activity occurs.

### Step 2: Identify the Cause of Earthquakes
Earthquakes are caused by the movement of tectonic plates. These plates are in constant motion due to thermal energy from the Earth's interior. When they collide or slide past each other, stress builds up and is released as an earthquake.

**Hint:** Consider what happens when tectonic plates interact with each other.

### Step 3: Define Key Terms
The term "epicenter" refers to the point on the Earth's surface directly above where the earthquake originates. However, the actual point within the Earth where the earthquake starts is called the "focus" or "hypocenter."

**Hint:** Remember the difference between the epicenter and the focus of an earthquake.

### Step 4: Conclusion
Based on the definitions, the place inside the Earth's crust where the earthquake is generated is called the "focus" or "hypocenter."

**Final Answer:** The place inside the Earth's crust where the earthquake is generated is called the **focus** or **hypocenter**.