Atmosphere range exists upto what range above earth's surface?a.100kmb.500kmc.300 kmd.200 km

1. Break Down the Problem

To determine the correct answer, we need to understand the extent of the Earth's atmosphere in relation to the options provided.

2. Relevant Concepts

The Earth's atmosphere is composed of several layers, and its general range is typically recognized up to about 10,000 km from the surface. However, notable boundaries include:

• The Kármán line at about 100 km, which is often used to define the edge of space.
• The thermosphere, which can extend up to around 600 km, but some sources suggest it may reach higher depending on solar activity.

3. Analysis and Detail

The options provided are:

1. 100 km
2. 500 km
3. 300 km
4. 200 km

Based on common scientific understanding, the critical boundary to consider here is the Kármán line at 100 km above sea level, marking the beginning of outer space. However, looking at the atmosphere's layers:

• Troposphere: up to about 8-15 km (varies by location)
• Stratosphere: up to about 50 km
• Mesosphere: up to about 85 km
• Thermosphere: extends well beyond 100 km, but the atmosphere becomes very thin at higher altitudes.

4. Verify and Summarize

While the atmosphere technically extends beyond 100 km when considering very thin layers, for most practical purposes, the atmosphere can be considered to have its significant influence up to around 100-200 km in terms of human activities and air movement.

Final Answer

The best answer is a. 100 km, as it is the most recognized boundary for the Earth's atmosphere with respect to space.