background preloader

Atmosphere and weather

Facebook Twitter

Nat Geo Kids on YouTube: Wacky Weather Playlist. Key to symbols and terms. Units Weather symbols Wind symbols Mean wind speeds are shown in a white symbol.

Key to symbols and terms

The numbers in the circle indicate the mean wind speed in the units you have chosen (Miles per hour, Kilometres per hour or knots). The arrow points in the direction in which the wind is blowing relative to true north. E.g. indicates a mean wind of 7 mph, coming from the east. Temperature symbols Forecast table. Atmospheric Pressure Makes The Wind Blow. Atmospheric Pressure - What Makes The Wind Blow?

Atmospheric Pressure Makes The Wind Blow

Many of the forces within our atmosphere are easily recognized by us. This is due to the fact that we can use our senses to feel these forces. We can, for example, quickly determine the approximate temperature outside simply by stepping outside. We immediately know whether it is cold, warm or hot. Likewise, we can feel the amount of wind, or see the level of windiness by looking at how forcefully the trees are swaying back and forth. Atmospheric pressure is the amount of force or pressure exerted by the atmosphere on the objects located within it. Right this minute, as you sit reading this article, the atmosphere is pressing down around you. What type of pressure is there around you right now? Because it is difficult to perceive pressure through our senses, it is tempting to assume that pressure is not very important.

Stuff to Blow Your Kid's Mind: Atmospheric Pressure. Stuff to Blow Your Kid's Mind Did you know that air has weight?

Stuff to Blow Your Kid's Mind: Atmospheric Pressure

It may sound strange, but it's true. In this episode, Julie and Robert conduct an experiment that shows just how powerful air pressure can become. Tune in to learn more. Most Watched in Stuff to Blow Your Mind Monster Science: Monstrous Sex Ed: Alien Husbands If science fiction has taught us anything, it's that all-male alien species often develop an insatiable lust for Earth women. Stuff to Blow Your Mind: Epic Science: Face What does your face say about you? Stuff to Blow Your Kid's Mind: Gravity Gravity is the force that holds us on the planet -- but how does it actually work? Stuff to Blow Your Kid's Mind: Magnets You've probably played with magnets before -- these fascinating items can exert control over another object without actually touching it. Humidity. Humidity The amount of water vapor in the air is referred to as humidity.


The more water that is in the air there is, the higher we say that the humidity has risen. Humidity can be measured in a number of ways. These include absolute humidity, specific humidity, and relative humidity. Absolute and specific humidity measure the exact physical amount of water in the air, while relative humidity compares how much water is in the air with how much could be in the air, or in other words, with the maximum vapor pressure. Suppose that given the local temperature and wind, the maximum vapor pressure allows a certain volume of air to hold 100 pounds of water. Thus, relative humidity does not tell us how much water vapor is in the air, but rather, what percentage of the maximum vapor pressure has been reached.

KS3 Bitesize Geography - Weather and climate : Revision, Page 5. KS3 Bitesize Geography - Weather and climate : Revision, Page 4. KS3 Bitesize Geography - Weather and climate : Revision, Page 3. Introduction To Our Atmosphere - Part II. Introduction To Our Atmosphere - Part II By watching these particulates, we can get an idea of just how volatile the atmosphere is.

Introduction To Our Atmosphere - Part II

What would happen, in our previous experiment, if we blow into the light? Doing so would reveal how quickly the air around us gets mixed up. Imagine what happens outside as storms blow the Earth’s atmosphere this way and that. Imagine how quickly the gases in our atmosphere are mixed together. The Earth’s atmosphere extends outward to a distance of approximately 6,000 miles.

The varying pressures of our atmosphere at different elevations has important effects on the weather, on animals and people, and on man-made devices. Layers of The Atmosphere. The Layers of Our Atmosphere In order to better understand our atmosphere, scientists have divided it into several layers.

Layers of The Atmosphere

These layers are divided based on the characteristics of the gases found at that height. Imagine a layered cake. A layered cake is made out of layers of different ingredients. The first layer might be cake mix. Science for Kids: Earth's Atmosphere. Science >> Earth Science for Kids The earth is surrounded by a layer of gases called the atmosphere.

Science for Kids: Earth's Atmosphere

The atmosphere is very important to life on Earth and does many things to help protect life and help life to survive. A Big Blanket. What is the greenhouse effect? Air Pressure explained. Bill Nye The Science Guy on Wind (Full Clip)