M1S2 Unit2 Atmosphere
Section outline
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To be completed:Quizzes 6 100%
Exam 2 200%
Project/Activity: 200% (not added yet)
Lessons with quizzes 2 100%Resources:All 4 videos must be viewed.
Website: View Real Time Weather.Atmosphere
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Learning Objectives Content.
Students to understand that the Earth is surrounded by a blanket of air which is held to the Earth by the force of gravity; the atmosphere is made up of a mixture of gases. The atmosphere can be divided into 5 layers
Students to understand that the lowest layer, the Troposphere contains most of the air and all of the living organisms; planes fly in the Stratosphere because there is very little wind and weather. Students to understand that the temperature of the air changes as you go higher.Content. Atmosphere.
The atmosphere is a mixture of gases that are held to the Earth by the force of gravity, without gravity the air would drift off into space. The atmosphere is a mixture containing Nitrogen (78%), Oxygen (21%), Argon (0.9%) Carbon dioxide (0.037%) and many others.
The atmosphere can be divided into 4 or 5 layers (depending on what text you use), Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere. The transition between levels is gradual so you cannot see them. The troposphere contains about 75% of all the atmosphere, it is where living organisms live and where the weather occurs. Stratosphere has very little moisture so no clouds and very little wind, this is why planes fly in this layer. The ozone layer is in this layer, important because it absorbs harmful UV light. Mesosphere is very cold and air is thin, layer where meteorites slow down and burn up. Thermosphere is layer where space shuttles fly. Exosphere is layer where atmosphere merges into space, height where satellites are found.
The temperature of the atmosphere rises and falls as you increase altitude, students to study temperature gradient graph supplied..
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Students mustReceive a gradeReceive a passing gradeThe FINAL EXAM based on this unit of work up to the lesson on winds.
Open 20 Febuary -
Students mustReceive a gradeReceive a passing gradeThe mid term EXAM based on this unit of work up to the lesson on winds.
Open 10 January
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Atmosphere
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Unit 1 Atmosphere.
The atmosphere is a mixture of gases that are held to the Earth by the force of gravity, without gravity the air would drift off into space. The atmosphere is a mixture containing Nitrogen (78%), Oxygen (21%), Argon (0.9%) Carbon dioxide (0.037%) and many others..
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Students mustReceive a gradeReceive a passing gradeAtmospheric gases
A quiz looking at the gasses that make up the air we breath.
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Atmospheric Layers
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Content. Atmospheric Layers
The atmosphere can be divided into 4 or 5 layers (depending on what text you use), Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere. The transition between levels is gradual so you cannot see them.
The troposphere contains about 75% of all the atmosphere, it is where living organisms live and where the weather occurs.
Stratosphere has very little moisture so no clouds and very little wind, this is why planes fly in this layer. The ozone layer is in this layer, important because it absorbs harmful UV light.
Mesosphere is very cold and air is thin, layer where meteorites slow down and burn up.
Thermosphere is layer where space shuttles fly.
Exosphere is layer where atmosphere merges into space, height where satellites are found..
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Temperature
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Content. Atmosphere temperature.
The temperature of the atmosphere rises and falls as you increase altitude, students to study temperature gradient graph supplied..
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Pic: Why is outer space the coldest place we know but the Earths
atmosphere reaches temperatures of 2000 degrees centigrade
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Measuring
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Global Network. World Meteorological Assoc.
A world wide global network of monitoring stations and satellites gather data to tell us all what the weather is doing.
The network helps to predict what could be life threatening weather patterns such as typhoons cyclones, storms, strong winds, heavy snow storms and weather induced landslides.
Incredible cooperation between almost every country in the world to get up to date warnings on weather issues.
One of the lead tools in the study of climatic change.
Maps | Data BasinClimate is the study of weather patterns over a long period of time. Areas on the planet are often described by their climatic types. The cyclone belt in America is an example
Min/Max Thermometer, Rain gauge, Wind Vane
Min/max thermometers are a u shaped glass tube that measures the minimum and maximum temperatures.
In each end of the tube is a piece of metal that is pushed to the min or max temperature.
As the temperature changes the mercury moves away from the block leaving it at the temperature reading.
The blocks can be reset with a magnet.
There are many variations to this theme.
Rain gauge is a simple container that collects and measures the amount of rain that falls in millimeters.
Newer versions are digital and can transmit data via the internet.
A wind vane shows the direction the wind is coming from.
Digital versions can store and transmit wind direction and wind speed to the internet.
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The weight of the molecules pressing down on
every square centimeter of our bodies.
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Pic: Barometer
Barometer
For measuring air pressure.
(the sign of rain or good weather).The pressure the atmosphere pushes in all directions and is about 1kg per sq/cm. at sea level.
4 types of pressure measurements.
Inches of Mercury (inHg) - Used mainly in the United States.
Millibars (mb) - Used by meteorologists.
Pascals (Pa) - The SI unit of pressure, used worldwide.
Atmospheres (Atm) - Air pressure at sea level at a temperature of 59 °F (15 °C)The average square area of skin on a human is 1.5 to 2 meters.
The weight is about 17 tonnes.The kilopascal is a unit of pressure. 1 kPa is approximately the pressure exerted by a 10-g mass resting on a 1-cm2 area.
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Humidity
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Humidity is important to know
For people and animals humidity stops the cooling affect of evaporation. Evaporation is what cools our bodies.
This can lead to dangerous levels of overheating. Severe illness or even death can result from heat stress, and it can trigger other problems with breathing, heart attacks or strokes.
At big sporting events with lots of people special precautions should be made for the problems of over heating.Humidity and rain
Warm humid air contains lots of water.
Warm wet air rises and condenses into droplets of water when it reaches the cooler upper layers.
The droplets then fall back to earth as rain.
Humid air causes the Greenhouse affect naturally to keep the planets temperature at liveable temperatures.
Greater than -18 degrees on most of the planet..
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The Hygrometer is used for
measuring moisture content in the air.Moisture content is called Humidity.
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Anemometer is to measure wind speed.
Knowing wind speed tells weather forecasters if storms are weakening or getting stronger
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Students mustReceive a gradeReceive a passing gradeSpelling
Weather and Atmosphere words. Check your spelling. -
Students mustReceive a gradeReceive a passing gradeSpelling
More spelling words with extra information about weather and weather terms -
Students mustReceive a gradeReceive a passing gradeMeasuring quiz
Weather and how we measure the affects and the data used for prediction. The data is also used by meteorologist to study climate control.
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Forecasting
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Forecasting the weather.
A good forecast allows people to plan their day week or month.
Forecasting helps emegency services prepare for the worst and save lives.
Good forecasting helps people to build houses that can resist the worst types of weather natural disasters.
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Students mustGo through the activity to the endReceive a gradeReceive a passing gradeClouds Lesson
A short lesson on clouds. Clouds show us the moisture in the air and the possibility of rain, sometimes days ahead. Clouds tell us what winds are likely to hit us in hours or sometimes days ahead of time. -
Students mustReceive a gradeReceive a passing gradeSpelling Quiz
Weather words storms and map words. Check your spelling. -
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Students mustReceive a gradeReceive a passing grade
Spelling cloud Names
Learn more about the clouds in the sky to predict weather. Quiz is spelling with extra information. Do quiz with Chrome or Firefox browser. Safari does not show popups for extra information.
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Reading a Weather Map
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Learning Objectives Content.
Students to understand that wind direction is affected by the earth's rotation.Content. Coriolis affect, Isobars, Fronts and Pressure.
The rotation of the earth has a large affect on the weather.
The earth is spinning at much greater speeds at the equator (1670 kilometers/hour).
As we move towards the poles the earth spins slower.
The air mass is fluid and is often moving from north to south. The air mass is therefore being pulled by the different speeds and this creates the coriolis affect on the winds.
The winds flow across the isobars due to the difference in pressure.
The winds also curve due to the coriolis affect.
The coriolis affect is why the wind spins in a clockwise directions around high pressure systems in the Northern Hemisphere as compared to anticlockwise in the Southern Hemsiphere..
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Students mustGo through the activity to the endReceive a gradeReceive a passing gradeLesson on reading maps
Weather maps have their own language. This unit studies, Isobars, High and low pressure, Coriolis affect, Wind speed and Wind direction. -
Students mustReceive a gradeReceive a passing gradeForecasting
Using the large weather map write about the weather today and predict the weather in two days time.
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Measuring Pressure
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Barometric pressure (The Maths)
Barometric Pressure and Mass per Square meter..
The network helps to predict what could be life threatening weather patterns such as typhoons cyclones, storms, strong winds, heavy snow storms and weather induced landslides.Barometers
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The weight of the molecules pressing down on
every square centimeter of our bodies.
