Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Weather and atmosphere

2,185 views

Published on

Published in: Education
  • Be the first to comment

Weather and atmosphere

  1. 1. Weather and the Atmosphere
  2. 2. Important Facts <ul><li>Earth’s atmosphere is the thin layer of gases that surrounds Earth. </li></ul><ul><li>Dry air is 78% nitrogen and 21% oxygen. </li></ul><ul><li>Factories produce less air pollution than motor vehicles. </li></ul>
  3. 3. More Facts <ul><li>Burning fossil fuels causes more pollution than soil erosion, dust storms, and forest fires together. </li></ul><ul><li>Nitrogen oxides react with other air pollutants in the presence of sunlight to form photochemical smog. </li></ul><ul><li>As altitude decreases, the density of the air increases . </li></ul>
  4. 4. Facts Continued <ul><li>As air pressure increases, the column of mercury in a barometer rises. </li></ul><ul><li>People live in the troposphere , or inner layer of the atmosphere. </li></ul><ul><li>The lowest temperatures in the atmosphere are found in the mesosphere. </li></ul>
  5. 5. Let’s See If You Were Paying Attention
  6. 6. The two most abundant gases in the atmosphere are <ul><li>A. carbon dioxide and oxygen </li></ul><ul><li>B. carbon dioxide and nitrogen </li></ul><ul><li>C. nitrogen and oxygen </li></ul><ul><li>D. nitrogen and hydrogen </li></ul><ul><li>The Answer is </li></ul><ul><li>C </li></ul>
  7. 7. When climbing a high mountain, you get out of breath easily because <ul><li>A. the percentage of oxygen in the air decreases </li></ul><ul><li>B. the air is more dense </li></ul><ul><li>C. there is less oxygen in each cubic meter of air </li></ul><ul><li>D. air pressure is greater </li></ul><ul><li>The Answer is </li></ul><ul><li>C </li></ul>
  8. 8. Instruments used to measure air pressure are called <ul><li>A. Thermometers </li></ul><ul><li>B. Hygrometers </li></ul><ul><li>C. Hydrometers </li></ul><ul><li>D. Barometers </li></ul><ul><li>The Answer is </li></ul><ul><li>D </li></ul>
  9. 9. The layer in our atmosphere in which weather occurs is the <ul><li>A. troposphere </li></ul><ul><li>B. stratosphere </li></ul><ul><li>C. mesosphere </li></ul><ul><li>D. exosphere </li></ul><ul><li>The Answer is </li></ul><ul><li>A </li></ul>
  10. 10. The atmosphere is <ul><li>A. the layer in which weather occurs </li></ul><ul><li>B. the layer that contains the ozone layer </li></ul><ul><li>C. the layer of water in the oceans </li></ul><ul><li>D. the layer of gases that surrounds Earth </li></ul><ul><li>The Answer is </li></ul><ul><li>D </li></ul>
  11. 11. The human activity that causes the most air pollution is the burning of _________ <ul><li>The Answer is </li></ul><ul><li>Fossil fuels </li></ul>
  12. 12. Let’s Keep Learning!
  13. 13. Earth’s atmosphere is important because… <ul><li>it provides all the gases needed for living things </li></ul><ul><li>traps energy from the sun, which allows water to exist as a liquid </li></ul><ul><li>. </li></ul>
  14. 14. Air in the atmosphere <ul><li>has pressure because air has mass </li></ul><ul><li>contains particles </li></ul>
  15. 15. From Earth to space, the main layers in our atmosphere are: Troposphere Stratosphere Mesosphere Thermosphere
  16. 16. Acid Rain and the Ozone <ul><li>Acid rain forms when water combines with sulfur oxides </li></ul><ul><li>The ozone layer in the stratosphere absorbs ultraviolet radiation </li></ul>
  17. 17. Aneroid versus Mercury Barometer <ul><li>An aneroid barometer is different from a mercury barometer in that it does not contain a liquid </li></ul>
  18. 18. Let’s Test Our Knowledge
  19. 19. Ozone is <ul><li>A. a form of oxygen with three oxygen atoms in each molecule </li></ul><ul><li>B. a form of nitrogen with three oxygen atoms in each molecule </li></ul><ul><li>C. a form of oxygen with two oxygen atoms in each molecule </li></ul><ul><li>D. A form of nitrogen with two oxygen atoms in each molecule </li></ul><ul><li>The Answer is </li></ul><ul><li>A </li></ul>
  20. 20. Water vapor is water in the form of <ul><li>A. steam </li></ul><ul><li>B. crystals </li></ul><ul><li>C. a gas </li></ul><ul><li>D. droplets </li></ul><ul><li>The Answer is </li></ul><ul><li>C </li></ul>
  21. 21. Smoke is dark in color because it consists mainly of <ul><li>A. carbon dioxide </li></ul><ul><li>B. dust </li></ul><ul><li>C. water vapor </li></ul><ul><li>D. carbon </li></ul><ul><li>The Answer is </li></ul><ul><li>D </li></ul>
  22. 22. Density can be determined using <ul><li>A. density = mass/volume </li></ul><ul><li>B. density = volume/mass </li></ul><ul><li>C. density = mass * volume </li></ul><ul><li>D. density = mass + volume </li></ul><ul><li>The Answer is </li></ul><ul><li>A </li></ul>
  23. 23. The condition of Earth’s atmosphere at a particular time and place is known as __________ <ul><li>The Answer is </li></ul><ul><li>weather </li></ul>
  24. 24. The atmospheric gas called _______ forms clouds when it condenses. <ul><li>The Answer is </li></ul><ul><li>Water vapor </li></ul>
  25. 25. Acid rain can form when _______ in the air mixes with sulfur oxides to form sulfuric acid. <ul><li>The Answer is </li></ul><ul><li>Water </li></ul>
  26. 26. A(n) ________ barometer measures air pressure by using a metal chamber that is sensitive to pressure changes. <ul><li>The Answer is </li></ul><ul><li>Aneroid </li></ul>
  27. 27. Great Job!
  28. 28. Resources <ul><li>Clip Art (Microsoft PowerPoint 2003) </li></ul><ul><ul><li>Images and effects </li></ul></ul><ul><li>Science Explorer Weather and Climate (Prentice Hall science explorer). (2000). Upper Saddle River, New Jersey: Pearson Prentice Hall. </li></ul>

×