Lesson 2: Our Atmosphere and How It Works

The Atmosphere: Composition, Layers, and the Greenhouse Effect.

Welcome to our second lesson, where we'll dive into the fascinating world of our atmosphere. The atmosphere is a complex and dynamic layer of gases that surrounds the Earth, playing a crucial role in sustaining life. We'll explore its composition, including the primary gases like nitrogen, oxygen, and trace gases that make up this vital blanket. You'll learn about the different layers of the atmosphere—troposphere, stratosphere, mesosphere, thermosphere, and exosphere—and how each one has unique characteristics and functions.

We'll also discuss the greenhouse effect, a natural process that warms the Earth's surface. This phenomenon is essential for maintaining the planet's temperature, but human activities have intensified it, leading to global warming. By understanding the mechanisms of the atmosphere and the greenhouse effect, you'll gain insight into how our actions impact the climate. This knowledge is crucial for developing strategies to mitigate climate change and protect our planet. Let's uncover the secrets of our atmosphere and see how it works to sustain life on Earth.