13.4 Atmosphere read pp 510-513 The blanket of air and moisture that surrounds the Earth density of the atmosphere decreases with elevation air of lower.

Slides:



Advertisements
Similar presentations
Chapter 23 Modern Earth Science
Advertisements

Meteorology is the study of weather, weather phenomena, and weather forecasting. It uses two kinds of observations: Qualitative: not based on numbers.
The Atmosphere Why is there weather?
EARTH’S ATMOSPHERE Chapter 14.1 Pages
Atmosphere Notes. What are the properties of air? Mass – air consists of atoms and molecules. Mass – air consists of atoms and molecules. Density – the.
6-4.1 Atmospheric layers Compare the composition and structure of Earth’s atmospheric layers (including the gases and differences in temperature and pressure.
The Atmosphere.
Chapter 22 The Atmosphere. Permanent: Nitrogen-78% Oxygen-21%, Others - 1% Variable: Water vapor (H 2 O) Carbon dioxide (CO 2 ) Ozone (O 3 ) Particulates.
Geosphere or. Atmosphere The surrounding air of the Earth.
The Atmosphere Essential Question: What is the significance of the atmosphere to the existence of life on earth? pp
Chapter 1-The Atmosphere
Jeopardy $100 Section 1Section 2Section 3 Higher Thinking Vocabulary $200 $300 $400 $500 $400 $300 $200 $100 $500 $400 $300 $200 $100 $500 $400 $300 $200.
Composition  Nitrogen (N 2 ): 78%  Oxygen (O 2 ): 21%  Other Gases: 1% Argon (Ar): 0.934% Carbon Dioxide (CO 2 ): 0.037% Water Vapor (H 2 O): 0.01.
The Dynamic EarthSection 2 The Atmosphere The atmosphere is a mixture of gases that surrounds a planet, such as Earth. Nitrogen, oxygen, carbon dioxide,
Chapter 22 The Atmosphere
Section 1: Characteristics of the Atmosphere Objectives: Describe the composition of Earth’s atmosphere. Explain how two types of barometers work. Identify.
Atmosphere.
Characteristics of the Atmosphere. The Composition of the Atmosphere The atmosphere is made of 78% Nitrogen gas and about 21% oxygen. The atmosphere also.
Atmosphere. Blanket of gases around Earth It protects us from harmful rays. It is always changing due to people breathing, trees, and cars.
The Atmosphere Weather Dynamics Science 10 - Student Handout Source: Nelson Science 10 Text 13.4 ~ Page 510 Image from:
The Atmosphere Chapter 17. Composition – What’s in the air? Earths atmosphere is a mixture of gases that has changed over time The atmosphere did not.
The Atmosphere Weather Dynamics Science 10 Source: Nelson Science 10 Text 13.4 ~ Page 510 Approx. 30 minutes Presentation Time Image from:
Atmosphere. Atmosphere Composition: Gases - nitrogen, oxygen, argon, other gases Compounds – carbon dioxide, water vapor.
Atmosphere Notes. Temperature - is the average motion of the molecules of a substance (measured with a thermometer) There are 3 different temperature.
Atmosphere. What makes up our atmosphere?  Nitrogen  Oxygen  Argon.
Composition of the Atmosphere  The atmosphere is a mixture of gases surrounding Earth. Nitrogen (78%), the most common atmospheric gas, is released when.
Characteristics of the Atmosphere Chapter Atmosphere  Layer of gases that surrounds Earth  Most abundant gases are Nitrogen and Oxygen  Other.
Layers of the Atmosphere
Our Security Blanket.  1. Gases surrounding the planet held there by gravity.  2. Protects life by absorbing ultraviolet radiation.  3. Reduces temperature.
The Atmosphere. The Air Around You What is weather?
The Atmosphere & Weather. Bell Work What is the most abundant gas in the atmosphere?
The Composition of the Earth’s Atmosphere. What’s in our Air? Earth’s atmosphere is made up of nitrogen, oxygen, carbon dioxide, water vapor and many.
23.1 Characteristics of the Atmosphere Meteorology – the study of the characteristics of the atmosphere Weather - the state of the atmosphere at a particular.
The Atmosphere. Characteristics of the Atmosphere Atmosphere – a mixture of gases that surrounds a planet, such as Earth. The atmosphere is made up a.
Weather - Atmosphere.
What is Weather? What is the atmosphere?
- Earth’s Atmosphere By iTutor.com T
14.1 Characteristics of the Atmosphere
Section 1: Characteristics of the Atmosphere
Air and Aerodynamics.
A mixture of gases that surrounds a planet
Basic Properties of the Atmosphere
The Atmosphere Chapter 15.
Earth’s Changing Atmosphere
Earth’s Changing Atmosphere
The Atmosphere.
History, Structure and Composition of the Atmosphere
Mr. Fetch's Earth Science Class
The Atmosphere.
Weather.
Chapter 3: The Atmosphere
The Earth’s Warm Fuzzy Blanket
Atmosphere The Structure of the Atmosphere.
Section 1: Characteristics of the Atmosphere
Layers of the Atmosphere
Weather.
Atmosphere The Structure of the Atmosphere.
The Earth’s Warm Fuzzy Blanket
Weather.
The Atmosphere.
Weather.
The layers of gases surrounding the earth or another planet
Dec.11, 2017 You need: Clean paper (2) / pencil
Dec.12, 2017 You need: Clean paper (2) / pencil
History, Structure and Composition of the Atmosphere
Meteorology The Atmosphere.
Earth's Atmosphere.
14.1 Characteristics of the Atmosphere
Composition of the Atmosphere (ATM)
Write down everything you know about Earths Atmosphere
Presentation transcript:

13.4 Atmosphere read pp 510-513 The blanket of air and moisture that surrounds the Earth density of the atmosphere decreases with elevation air of lower atmosphere is dense due to the weight of overlying air

Exosphere Thermosphere Mesosphere Stratosphere Troposphere

Atmospheric Composition Nitrogen 78% Oxygen 21% Argon 0.9% Carbon Dioxide 0.03% traces of other gases

Atmospheric Composition Water vapour : considered a variable gas, can make up 4% of the volume of the air solids are also present: smoke, dust, volcanic ash, soil etc.

Troposphere 8-16 km altitude thicker at equator most of atmospheric moisture and weather temp decreases with altitude tropopause

Stratosphere highest [O3] temp rises above tropopause because ozone absorbs UV ~12-50 km very dry

Mesosphere 50 - 80 km temperature and density extremely low

Thermosphere Exosphere: space? or ionosphere density still low but very energetic molecules thus high temperatures auroras Exosphere: space?

structure of atmosphere video

Atmospheric Pressure: Force which air exerts as a result of gravity

Pressure Gradient: amount atmospheric pressure changes across a set distance fig 4a and 4b p.512

Isobars are lines of equal pressure when isobars are close together the gradient is higher, usually indicating strong winds check weather maps

Drawing Isobars video

Temperature Gradient: change in temperature over a distance in the troposphere this gradient is -6°C per 1000 m, i.e. the temperature drops 6°C for every 1000 m of elevation

Supporting Life the atmosphere is necessary to life… O2 is necessary for breathing N is essential for plant growth CO2 is used by plants O3 filters out UV

Supporting Life con’t plays a role in the water cycle absorbs meteroids regulates temperatures

Atmospheric Pressure measured in kilopascals 1 kPa = 1000 Pa fig 5, p 512 aneroid barometer

Low pressure areas have less atmospheric mass above their location, high pressure areas have more atmospheric mass above their location. Similarly, as elevation increases there is less overlying atmospheric mass, so that pressure decreases with increasing elevation.

Weather Balloons Radiosonde: instrument with electronic sensors which transmit temperature, air pressure, water vapour to ground stations radar tracking gives wind speed and direction

UC questions p 513 2, 3, 6