Question

what is the term for the fragile, invisible layer of the atmosphere about 10-30 miles above the earths surface that shields the planet from the suns hazardous ultraviolet rays?

a) the fossil layer
b) the greenhouse shield
c) the voc
d) the ozone layer

Explanation:

🆕 New Concept Discovered: Layers and Composition of the Atmosphere
Earth's protective atmospheric shields

Step 1: Analyze the question clues

The question asks for a specific layer of the atmosphere with the following characteristics:

• Located about 10–30 miles (approximately 15–50 kilometers) above the Earth's surface (within the stratosphere).
• Shields the planet by absorbing harmful ultraviolet (UV) radiation from the sun.

Step 2: Evaluate the options

• a) the fossil layer: This is not a layer of the atmosphere; fossils are found in sedimentary rock layers of the Earth's crust.
• b) the greenhouse shield: While greenhouse gases trap heat in the atmosphere, there is no specific atmospheric layer called the "greenhouse shield."
• c) the VOC: VOC stands for Volatile Organic Compounds, which are organic chemicals that easily become vapors or gases, not an atmospheric protective layer.
• d) the ozone layer: The ozone layer is a region of Earth's stratosphere containing high concentrations of ozone (\(\text{O}_3\)) that absorbs 97 to 99 percent of the sun's medium-frequency ultraviolet light.

Answer:

d) the ozone layer