15.1 Earths Atmosphere Worksheet Answers Pdf

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_____ 1. Without the atmosphere, we could not hear most sounds. _____ 2. The main reason Earth can support life is its atmosphere. _____ 3. Earth’s atmosphere consists mainly of . earth's atmosphere worksheet answers Name Class Date Earth’s Atmosphere Key Concepts Properties of the atmosphere include its composition, relative humidity, temperature, . Explain why Earth’s atmosphere is important. Describe the composition of the atmosphere. List properties of the atmosphere. Why is Earth the only planet in the solar system known to have . Read this passage based on the text and answer the questions that follow. The Role of the Atmosphere in the Water Cycle and Weathering The atmosphere plays a crucial role in the water cycle. Water evaporates from Earth’s surface, mostly from the oceans. The water vapor rises from Earth’s surface into the atmosphere. As it rises, it cools. At Earth’s surface, the atmosphere consists of 78% nitrogen (N2), 21% oxygen (O2), and 1% argon (Ar), with traces of water vapor (H2O), carbon dioxide (CO2), and other gases. Variable amounts of dust particles and water droplets are also found suspended in the air. A complete census of Earth’s volatile materials, however, should look at more. • How do air pressure and temperature change as you move away from Earth’s surface? • What are the layers of the atmosphere? What Is Earth’s Atmosphere Made Of? An atmosphere is a layer of gases that surrounds a planet or moon. On Earth, the atmosphere is often called just “the air.” When you take a breath of air, you are breathing in atmosphere.