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Chapter 17: Problem 21

In which part of earth's atmosphere is the ozone layer present? (A) Troposphere (B) Stratosphere (C) Ionosphere (D) Mesosphere

Short Answer

Expert verified
The ozone layer is primarily found in the stratosphere, which extends from about 10 to 50 kilometers above the Earth's surface. Therefore, the correct answer is (B) Stratosphere.

Step by step solution

01

Understand the Earth's Atmosphere Layers

The Earth's atmosphere is divided into several layers. The main layers, from the Earth's surface moving outward, are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. It's essential to know the characteristics of these layers to identify the right answer.
02

Identify the Ozone Layer

The ozone layer is a region in the Earth's atmosphere that contains a high concentration of ozone (O3) molecules. The primary function of the ozone layer is to absorb ultraviolet (UV) radiation from the Sun and protect life on Earth from harmful rays.
03

Find the Correct Option

The ozone layer is primarily found in the stratosphere, which extends from about 10 to 50 kilometers (6 to 31 miles) above the Earth's surface. The concentration of ozone is highest between 15 and 30 kilometers (9 and 19 miles). Therefore, the correct answer is (B) Stratosphere.

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