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CRCT Question

CRCT Question. What layer of the atmosphere is the largest? Troposphere Stratosphere Mesosphere Thermosphere. Warm up with Mr . Lee. Air Pressure Demonstrations. Think, Pair, share . Describe why you think the egg dropped in the jar? . Question and Answer. Whiteboard Review.

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CRCT Question

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  1. CRCT Question What layer of the atmosphere is the largest? Troposphere Stratosphere Mesosphere Thermosphere

  2. Warm up with Mr. Lee

  3. Air PressureDemonstrations

  4. Think, Pair, share • Describe why you think the egg dropped in the jar?

  5. Question and Answer Whiteboard Review

  6. Question Put the layers of the Atmosphere from surface of the earth outward Stratosphere, ionosphere, troposphere, exosphere, Mesosphere

  7. Answer Troposphere Stratosphere Mesosphere Ionosphere Exosphere

  8. Question What measures air pressure in the atmosphere?

  9. Answer Barometer

  10. Question Would warm air or cold air have more pressure?

  11. Answer Cold Air Cold air is more dense so it has more pressure

  12. Question Would dry air or moist air have more pressure?

  13. Answer Dry Air Dry air is more dense so it has more pressure

  14. Question What is the most abundant gas in the atmosphere?

  15. Answer Nitrogen

  16. Question In what layer do planes fly in?

  17. Answer Stratosphere

  18. Question Is there more pressure on the surface or in the top layer?

  19. Answer Surface has the most pressure

  20. Question What layer of the atmosphere do we live in?

  21. Answer Troposphere

  22. Question In what layer do the northern lights occur in?

  23. Answer Ionosphere

  24. Question The ozone layer is in what layer?

  25. Answer Stratosphere

  26. Question What causes air pollution (smog)

  27. Answer Burning of fossil fuels

  28. Quiz Good Luck • Make sure you put your first and last name on it  • Underline important information as you read it! • Always check your answers! • Put in SCIENCE bin when you are finished. • Silent read until everyone is finished!

  29. Practicing Note Taking Please take out a sheet of paper and title it “Weather Energy & Heat Transfer”

  30. The atmosphere is to the earth what the skin of an apple is to the apple. What does this mean?

  31. Weather • Four variables interact to cause weather. They are: • Heat • Air pressure • Wind • Moisture

  32. Where do you think the heat comes from that makes our weather change? Of course, the sun!

  33. Three forms of the sun’s energy come through the atmosphere and have an effect on our atmosphere and weather. They are: Visible light Ultraviolet radiation Infrared radiation

  34. Energy comes to us from the sun in the form of electromagnetic waves. (We will study more about this when we study stars.)

  35. http://www.dkimages.com

  36. Ultraviolet radiation The sun emits different wavelengths of ultraviolet radiation. UVA, UVB, and UVC. UVB and C are very bad for living things. Most is absorbed by the ozone layer in the stratosphere. Ozone is our protector! http://www.uvdi.com UV is what makes us sunburn and causes mostskin cancer.

  37. Infrared Infrared (IR) radiation is the scientific name for heat energy. The sun is not the only thing the gives off IR. This is an infrared image of a jeep with its engine running. White is hottest! http://www.atc.army.mil/

  38. What happens to the sun’s energy when it reaches our atmosphere? Notice that this diagram is similar to the one in your book on page 528.

  39. What happens to the heat energy when it reaches the Earth’s surface? Heat always moves from a higher temperature place to a lower temperature place so the energy gets transferred (moved).

  40. The scientific name for heat energy is THERMAL ENERGY. We use two common scales Metric uses Celsius USA uses Fahrenheit (Both named after the scientist that came up with the measurements.) 0 degrees C 32 degrees F 100 degrees C 212 degrees F

  41. Heat is transferred in three ways: 1. Radiation 2. Conduction 3. Convection

  42. Radiation Requires no substance to travel from one place to another. It can move through the vacuum of space . Energy from the sun comes to us through radiation. Video about radiation

  43. Conduction http://cache.eb.com/ Heat is transferred from atoms that are touching. It is not carried by a liquid or gas. Example: You walk on a hot sidewalk barefooted and your feet get hot. The heat is moving from the atoms of the sidewalk to your feet. Video segment on conduction

  44. The layer of air above the earth is warmed by conduction (the transfer of heat by contact) molecule by molecule from the hot earth to the layer of air touching the sand. The heat is also conducted to your feet when you walk on the beach.

  45. Convection occurs when heat is transferred through a liquid or a gas. The heat is carried from one place to another by a convection current. Convection Video about convection

  46. Heat warms the atmosphere best when it is in the form ofconvection currents. Convection currents form when heated air expands, becomes lighter, and rises. The heat is carried upward. This is convection! It also happens with liquids.

  47. http://www.beodom.com/ Can you name these?

  48. Without an atmosphere, the sky would be black like the moon's sky. As light goes through an atmosphere, it gets scattered. This scattered light is what “lights up” the sky. This picture was taken by Apollo astronauts from the surface of the moon. Notice that the ground has light, so it is daytime on the moon where the picture was being taken.

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