| A | B |
|---|
| Weather | the condition of earth’s atmosphere at a particular time and place. |
| Atmosphere | envelope of gases that surrounds the planet |
| what does atmosphere consite of? | It consist of nitrogen, oxygen, carbon dioxide, water, vapor, and other gases, as well as particles of liquids and solids. |
| Water vapor | water in the form of a gas. It is invisible it is made up of tiny droplets of liquid water |
| What is the composition of atmosphere? | nitrogen, oxygen, carbon dioxide, |
| NITROGEN - what % | makes up little more than ¾ of the air we breathe. |
| OXYGEN - waht % | 21 % of the volume |
| why fire needs oxygen? | to burn |
| why plants and animall take oxygen? | to use it and relase energy from their food |
| HOw steel in cars reacts to oxygen? | it reacts slowly and forms iron oxide or rust |
| CARBON DIOXIDE - what % | makes ups much less than 1% of the atmosphere |
| why carbon dioxide is essential to life? | Plants must have carbon dioxide to produce food. |
| OXYGEN AND NITROGEN together what % | 99% of dry air |
| what is the other 1% ? | mostly ARGON plus other gases - trace gases |
| is air really dry? | no. it contains WATER VAPOR |
| WATER VAPOR | water in a form of gas. It is not steam, |
| how does clouds form? | when the water vapor condenses out of air to form tiny droplets of liquid water or crystals of ice. IF THE DROPLETS become HEAVY enough RAIN or SNOW |
| Air contains also what? | tiny particle of dust, smoke, salt and chemicals. |
| How is the atmosphere a system? | It interacts with other Earth systems, such as the ocean. |
| what are parts of atmosphere? | CLOUDS, AIR, WIND, ENERGY |
| what an event in one part of the atmosphere do? | it affects other parts of the atmosphere. |
| what dos ENERGY from the SUN do? | drives the motions in the atmosphere. |
| what does hurricane involve? | a great deal of energy. Hurricane gets energy from warm ocean water, which get it heat from the sun. |
