2. CAV 100 The Atmosphere

3. Troposphere 75% 0f atmosphere in this layer 75% 0f atmosphere in this layer Where most weather occurs Where most weather occurs 78% nitrogen 21% oxygen 78% nitrogen 21% oxygen From surface to 50,000 feet over equator From surface to 50,000 feet over equator Surface to 25,000 over poles Surface to 25,000 over poles Temperature decreases as you climb higher Temperature decreases as you climb higher

4. Tropopause Acts as cap on Troposphere Acts as cap on Troposphere Temp stabilizes at -70F Temp stabilizes at -70F

5. Stratosphere No water vapor or clouds No water vapor or clouds Temperature increases Temperature increases Characterized by low pressure Characterized by low pressure

6. Mesosphere Ozone layer protects us from solar radiation Ozone layer protects us from solar radiation Ozone- three atoms per molecule of oxygen Ozone- three atoms per molecule of oxygen

7. Thermosphere No sound No sound Also called Ionosphere Also called Ionosphere Important in long range radio communication Important in long range radio communication Region of the Aurora Borealis-northern lights Region of the Aurora Borealis-northern lights Particles from the sun collide with gas molecules at the poles Particles from the sun collide with gas molecules at the poles

8. Exosphere Upper region of atmosphere Upper region of atmosphere Area of satellites Area of satellites

9. Space Near space-100 to 10,000 miles up Near space-100 to 10,000 miles up Cislunar space-between Earth and Moon Cislunar space-between Earth and Moon Translunar space-beyond Moon to 1 million miles Translunar space-beyond Moon to 1 million miles Interstellar space-the space between stars in the same galaxy Interstellar space-the space between stars in the same galaxy Intergalactic space-the space between galaxies in the same Universe Intergalactic space-the space between galaxies in the same Universe

10. Characteristics of Space Vacuum Vacuum No sound No sound Average temp= -460F Average temp= -460F Intense radiation- Van Allen belts- located at 4,000 and 40,000 miles from Earth Intense radiation- Van Allen belts- located at 4,000 and 40,000 miles from Earth Meteoroids- shooting stars Meteoroids- shooting stars

11. Weightlessness Balance between centrifugal force and gravity Balance between centrifugal force and gravity Lazy heart- problem with long term space flight Lazy heart- problem with long term space flight

12. Living in Space Spacesuits offer protection from Spacesuits offer protection from Vacuum Vacuum Temperature extremes Temperature extremes Micro meteoroids Micro meteoroids Radiation Radiation

13. Space food Puree Puree Dehydrated Dehydrated Solid bite size Solid bite size Powered Powered Future-recycle waste Future-recycle waste Today-have normal meals Today-have normal meals Space tools-Newton’s 3 rd law of motion Space tools-Newton’s 3 rd law of motion Other considerations-Diurnal cycle-day, night Other considerations-Diurnal cycle-day, night