https://padlet.com/maddenc/3f8l02qlem8w en-us 2017-01-11 17:36:26 UTC 2017-01-27 17:15:46 UTC hello@padlet.com maddenc https://padlet.com/maddenc/3f8l02qlem8w/wish/146589170 1. What is earth's atmosphere? A thin layer of gases that surround the earth
2. Why is earth's atmosphere not considered pure air? Because earth's atmosphere is made up of different gases and solid particles besides just oxygen
3. What is the composition of earth's atmosphere? nitrogen, co2, argon,methane , water vapor
4. What gas makes up most of earth's atmosphere? nitrogen 78 percent of our atmosphere
5. Explain why earth's atmosphere is important. keeps it not to hot or not to cold, protects us from the sun's harmful rays, traps in gases that we need to breath (nitrogen,oxygen), stores water for the water cycle. ]]> 2017-01-11 17:38:10 UTC https://padlet.com/maddenc/3f8l02qlem8w/wish/146589170 maddenc https://padlet.com/maddenc/3f8l02qlem8w/wish/148171009 1. Why does air have pressure and density? air has mass
2. What is air pressure? force is exerted by air
3. What is density? amount of mass in given volume
4. How does air pressure and density change with altitude? air pressure and density decrease with altitude
5. Why does air pressure change with altitude? the higher the altitude the less air pressure]]> 2017-01-19 17:39:22 UTC https://padlet.com/maddenc/3f8l02qlem8w/wish/148171009 maddenc https://padlet.com/maddenc/3f8l02qlem8w/wish/148801347 1. What divides earth's atmosphere into different layers? different altitudes different tempertures
2. Identify the layers the atmosphere from earth's surface to space. thermosphere stratosphere mesosphere thermosphere
3. Which layer of earth's atmosphere contains ozone and what does ozone do? stratosphere blocks us from uv rays
4. What is the hottest layer of earth's atmosphere? How hot is it? thermosphere , 1800
5. What layer contains earth's weather? trososphere
6. What layer protects earth's surface from meteors? mesoashere]]> 2017-01-23 17:44:01 UTC https://padlet.com/maddenc/3f8l02qlem8w/wish/148801347 maddenc https://padlet.com/maddenc/3f8l02qlem8w/wish/149400887 1. What is the source of all energy on earth? sun
2. How does that energy reach earth through space? radiation
3. What happens to that energy after it reaches earth's atmosphere? some sunlight is absorbed or reflected by the atmosphere before it can reach the surface
4. How much of the 100% of energy that reaches the troposphere actually makes it to earth's surface? Why? 50%, because the clouds absorb and reflect some of it.
5. What process traps heat on earth's surface? Why is this important?greenhouse effect, protects us from the sun keeps temp. stable ]]> 2017-01-25 17:38:23 UTC https://padlet.com/maddenc/3f8l02qlem8w/wish/149400887 maddenc https://padlet.com/maddenc/3f8l02qlem8w/wish/149938619 1. Compare and contrast temperature and thermal energy. temperature is the average amount of energy of motion in the particles of a substance and thermal energy is the total amount of energy of motion in the particles of a substance.
2. What happens to the motion of particles as the temperature of a substance increases? the higher the temperature the faster they are moving.
3. What is heat? It's the thermal energy that is transferred from a hotter object to a cooler one. 
4. Describe the three ways that heat is transferred? convection,conduction,radiation]]> 2017-01-27 17:09:15 UTC https://padlet.com/maddenc/3f8l02qlem8w/wish/149938619