Thermosphere is associated with high temperature due to the absorption of ______.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Thermosphere**: The thermosphere is the layer of Earth's atmosphere that is located above the mesosphere and below the exosphere. It is known for its high temperatures.

2. **Role of Solar Radiation**: The high temperatures in the thermosphere are primarily due to the absorption of solar radiation. The sun emits various types of radiation, including X-rays and ultraviolet (UV) radiation.

3. **Absorption of Radiation**: In the thermosphere, a significant amount of X-ray and UV radiation is absorbed. This absorption process increases the kinetic energy of the gas molecules present in this layer, leading to higher temperatures.

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