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Understanding Earth's Atmosphere: Layers, Gases, and Solar Energy

This journal entry explores the essential components of Earth's atmosphere, detailing its layers—troposphere, stratosphere, mesosphere, thermosphere, and exosphere—and their significance for life. Learn about the predominant gases, the importance of air pressure and temperature changes with altitude, the role of solar energy in driving atmospheric circulation, and how land and water interact with this energy. Also, discover the greenhouse effect and its implications for climate. Gain insights into how these factors contribute to the conditions that sustain life on our planet.

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Understanding Earth's Atmosphere: Layers, Gases, and Solar Energy

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  1. WEATHER Journal Entries For Weather

  2. Table of Contents

  3. EQ 8 p.8 • Q: What is the atmosphere and why is it important? • Earth’s atmosphere is the layer of gases that surrounds the planet. • It makes conditions on Earth suitable for living things.

  4. EQ 9 p.9 • Q: What is the sequence of Earth’s atmospheric layers? • Troposphere • Stratosphere • Mesosphere • Thermosphere • Exosphere • THINK: EaT MoST

  5. EQ 9 p.9 Q: Now go back to EQ 9 & explain the prefixes of Earth’s atmospheric layers. 1. Troposphere: tropo = changing 2. Stratosphere: strato = layer 3. Mesosphere: meso = middle 4. Thermosphere: thermo = heat 5. Exosphere: exo = outer

  6. EQ 10 p.10 • Q: How are the atmospheric layers alike/different in regards to gases? • Nitrogen (78%) & Oxygen (21%) are the two most common gases; found in all the layers. • Ozone is a form of oxygen (o-o-o) found in the ozone layer in the stratosphere. • Water vapor & Carbon dioxide are important gases for weather conditions; found in the troposphere. • Trace gases play an insignificant role

  7. EQ 11 p.11 Q: Explain the relationship between air pressure and the atmospheric layers. Air pressure is a force exerted by the gases in the atmosphere. It is greatest in the troposphere & least in the exosphere. Air pressure DECREASES with altitude because Earth’s gravitational pull decreases.

  8. EQ 12 p.12 Q: Explain the relationship between temperature and the atmospheric layers. Troposphere: As altitude increases temperature decreases. Stratosphere: Cold, but gets warmer near ozone layer. Mesosphere: Coldest layer Thermosphere: Hottest layer Exosphere: Cold regions of outer space

  9. EQ 13 p.13 • Q: What is solar energy? • The sun (solar energy) is the driving energy source for heating the Earth. • Circulation in the Earth’s atmosphere comes from the sun.

  10. EQ 14 p.14 • Q: What happens to the sun’s energy coming through the atmosphere? • It is absorbed or reflected by the gases & clouds in the atmosphere.

  11. EQ 15 p.15 • Q: What is the difference in how land & water absorb solar energy? • The LAND absorbs solar energy quicker and it cools off quicker than water. • The WATER absorbs solar energy slower and it cools off slower than land. • It is the WATER that helps regulate the temperature range of Earth’s atmosphere.

  12. EQ 16 p.16 • Q: What is the ‘greenhouse effect”? • When gases in the atmosphere trap heat that is reflected from Earth’s surface, this is called the ‘greenhouse effect’.

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