14 1 Characteristics of the Atmosphere Create a
- Slides: 20
14. 1 Characteristics of the Atmosphere
Create a list of ways in which the atmosphere differs from outer space.
Atmosphere • A mixture of gases that surrounds Earth.
Atmosphere
Air • A mixture of gases that make up the atmosphere. • Mostly nitrogen (78%). • Oxygen (21 %).
• Contains liquid water Air • • (water droplets). Contains solid water (snow and ice crystals). Contains small particles (Dust, volcanic ash, dirt, smoke).
Air
Air Pressure • The measure of the force with which air • molecules push on a surface. It’s equal to the weight of the air directly above that point. ( ex: pyramid)
Air Pressure . . video clips14. 1 Characteristics of the AtmosphereAir_Pressure_Demonstration__Breaking_a_Meter_Stick_asf. asf
Why is air pressure highest near Earth’s surface? Air pressure is highest at Earth’s surface because there a lot of air molecules near the surface and because air at the surface must support the weight of the entire atmosphere above.
Air Temperature • Changes as altitude • changes. Differences caused from the way that energy is absorbed by gases in the atmosphere.
Layers of the Atmosphere 1. 2. 3. 4. Troposphere Stratosphere Mesosphere Thermosphere
Troposphere • The layer of the • • • atmosphere that lies next to Earth’s surface. Contains 90% of atmosphere’s total mass. Contains water vapor, air pollution, and weather. Temperature decreases as altitude increases.
Stratosphere • Layer above the • • • troposphere. Air is thin and has little moisture. Temperature rises as altitude increases. Ozone layer – protects life on Earth by absorbing harmful ultraviolet radiation.
Atmosphere
Mesosphere • The middle layer of • • the atmosphere. Coldest layer. Temperature decreases as altitude increases in the mesosphere.
Thermosphere • Uppermost • atmospheric layer. Temperature increases with altitude.
Why are temperatures high in the stratosphere and thermosphere? In the stratosphere, a layer of gas called ozone absorbs a lot of solar radiation. In thermosphere, nitrogen and oxygen absorb high-energy radiation.
Review Questions 1. Why does the temperature of different layers of the atmosphere vary? The temperature of the different layers of the atmosphere varies because the gases at different altitudes absorb solar radiation differently. 2. What is air pressure? Air pressure is the measure of the force with which air molecules push on a surface. It is equal to the weight of the air directly above the point.
3. Why does air pressure decrease as altitude increases? Air pressure decreases as altitude increases because the weight of the overlying atmosphere decreases. 4. Compare the four atmospheric layers. How do temperatures and pressures vary between layers? Air pressure is highest at Earth’s surface and decreases as you move away. The layers of the atmosphere in order of decreasing air pressure are troposphere, stratosphere, mesosphere, and thermosphere. Temperature varies in the atmosphere depending on how gases absorb solar radiation. In the troposphere and mesosphere, temperature decreases as altitude increases. In the stratosphere and thermosphere, temperature increases as altitude increases.
- Jika noel(create(q)) adalah 0 maka front(create(q)) adalah
- Characteristics of the atmosphere
- Hình ảnh bộ gõ cơ thể búng tay
- Lp html
- Bổ thể
- Tỉ lệ cơ thể trẻ em
- Gấu đi như thế nào
- Chụp tư thế worms-breton
- Chúa yêu trần thế alleluia
- Các môn thể thao bắt đầu bằng tiếng đua
- Thế nào là hệ số cao nhất
- Các châu lục và đại dương trên thế giới
- Công thức tính thế năng
- Trời xanh đây là của chúng ta thể thơ
- Mật thư tọa độ 5x5
- Phép trừ bù
- độ dài liên kết
- Các châu lục và đại dương trên thế giới
- Thể thơ truyền thống
- Quá trình desamine hóa có thể tạo ra
- Một số thể thơ truyền thống