What is the correct sequence of atmosphere layers starting from earth?

Options

A. Stratosphere, troposphere, mesosphere, thermosphere
B. Troposphere, stratosphere, mesosphere, thermosphere
C. Mesosphere, troposphere, stratosphere, thermosphere
D. Thermosphere, mesosphere, stratosphere, troposphere

Answer

To determine the correct sequence of atmospheric layers starting from the Earth's surface, we can follow these steps:

### Step 1: Identify the Layers of the Atmosphere
The Earth's atmosphere is divided into several layers based on temperature gradients and other characteristics. The primary layers are:
1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere

### Step 2: Understand the Order of the Layers
The layers of the atmosphere are arranged from the Earth's surface outward. The order is as follows:
- **Troposphere**: This is the lowest layer, extending from 0 to about 12 km above the Earth's surface. It is where weather occurs.
- **Stratosphere**: Above the troposphere, it extends from about 12 km to 50 km. This layer contains the ozone layer.
- **Mesosphere**: This layer extends from about 50 km to 80 km. It is where most meteors burn up upon entering the Earth's atmosphere.
- **Thermosphere**: The uppermost layer, extending from about 80 km to 700 km. It contains very thin air and is where the auroras occur.

### Step 3: Sequence the Layers
Now, we can list the layers in the correct sequence starting from the Earth's surface:
1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere

### Step 4: Identify the Correct Option
Based on the identified sequence, the correct option for the question "What is the correct sequence of atmospheric layers starting from Earth?" is:
- **Troposphere, Stratosphere, Mesosphere, Thermosphere** (Option 2).

### Final Answer
The correct sequence of atmospheric layers starting from the Earth is:
**Troposphere, Stratosphere, Mesosphere, Thermosphere.**

---