Eyewitness – Weather Video Guide Name:______Period____

  1. The average temperature, winds, and rainfall that a place experiences over a period of years make up its ______.
  1. The ______is what happens on a particular day and this doesn’t always fit in with the overall climatic pattern.
  1. The topics have weather that is much the same from day to day. In ______regions, weather is much more variable.
  1. It’s the ______that drives our weather, from the poles to the tropics.
  1. ______keep the Earth warm after dark. Without this cover, temperatures can plummet overnight.
  1. When water vapor in the air freezes onto surfaces, we get ______.
  1. Global warming means that freak freezes are less common now than they were in the past. Only ______years ago, there were ice fairs in England on the river Thames.
  1. Virtually every society has some history of _____ worship.
  1. The atmosphere filters out many of the sun’s most harmful rays. The layer ______to us is the troposphere and this is where the weather action is.
  1. The troposphere is about ___ miles thick.
  1. The Greek philosopher Aristotle believed that through careful observation, we could find patterns in the weather. He invented ______.
  1. Natural weather cues:
  2. Morning Glories open when it is fine and ______.
  3. Pinecones open when it is ______.
  4. Wind is simply ______rushing from one place to another; being pushed and pulled by the sun driven activity in the troposphere.
  1. Air moves from areas where it is cold (high pressure) to areas where it is ______and can spread out (low pressure).
  1. In the 1930’s, “black blizzards” in the American dust bowl blew ______soil from one state to another.
  1. Tornadoes are formed when strong winds stream past the top of a rising column of warm air, whipping it into a ______.
  1. By noon in our weather day, the sun’s rays are at their most ______.
  1. We can sometimes drop particles of silver iodine or frozen ______into clouds to make it rain. This works up to a point.
  1. In the Bangladesh floods of 1988, ______of the country was affected.
  1. There’s always ______in the air, even in deserts.
  1. Warm air can hold much more ______than cold.
  1. We can’t see the water vapor in the air, until the air cools enough for it to condense into droplets like fog.
  1. In the afternoon of the weather day, the ______vapor’s condensation processes starts to form cumulus clouds. Warm air rises, taking its water vapor with it, but as it cools, the moisture forms tiny droplets.
  1. Hailstones do more than ______million dollars worth of damage every year.
  1. Stormy weather is often due to weather patterns known as ______. There are born out of the clash between warm, damp air from over the topics and cold dry air from the poles.
  1. As they collide, the warm air rises over the cold. The edges of the air masses are known as ______.
  1. As storms move over warm, open water, more clouds form and the spiral quickens. Soon the howling, whirling mass of air is heading towards land. A ______is on the way!
  1. ______are refractions of the sun’s rays through water droplets in the air.
  1. In a thunderstorm, positively charged particles gather at the top of the cloud and negatively charged ones at the bottom. The energy is discharged as light, heat and ______.
  1. A bolt of lightening carries about a ______volts.

Eyewitness – WeatherName:__KEY______

  1. The average temperature, winds, and rainfall that a place experiences over a period of years make up its _climate______.
  2. The __weather______is what happens on a particular day and this doesn’t always fit in with the overall climatic pattern.
  3. The topics have weather that is much the same from day to day. In ___temperate______regions, weather is much more variable.
  4. It’s the __sun____ that drives our weather, from the poles to the tropics.
  5. _Clouds____ keep the Earth warm after dark. Without this cover, temperatures can plummet overnight.
  6. When water vapor in the air freezes onto surfaces, we get _frost___.
  7. Global warming means that freak freezes are less common now than they were in the past. Only _200_____ years ago, there were ice fairs in England on the river Thames.
  8. Virtually every society has some history of _sun_ worship.
  9. The atmosphere filters out many of the sun’s most harmful rays. The layer ___closest______to us is the troposphere and this is where the weather action is.
  10. The troposphere is about _8_ miles thick.
  11. The Greek philosopher Aristotle believed that through careful observation, we could find patterns in the weather. He invented _meteorology____.
  12. Natural weather cues:
  13. Morning Glories open when it is fine and _dry____.
  14. Pinecones open when it is _damp____.
  15. Wind is simply __air______rushing from one place to another; being pushed and pulled by the sun driven activity in the troposphere.
  16. Air moves from areas where it is cold (high pressure) to areas where it is _warm______and can spread out (low pressure).
  17. In the 1930’s, “black blizzards” in the American dust bowl blew __top___ soil from one state to another.
  18. Tornadoes are formed when strong winds stream past the top of a rising column of warm air, whipping it into a _spiral____.
  19. By noon in our weather day, the sun’s rays are at their most _powerful______.
  20. We can sometimes drop particles of silver iodine or frozen __carbon______dioxide______into clouds to make it rain. This works up to a point.
  21. In the Bangladesh floods of 1988, _3/4______of the country was affected.
  22. There’s always __water___ in the air, even in deserts.
  23. Warm air can hold much more _water______vapor_____ than cold.
  24. We can’t see the water vapor in the air, until the air cools enough for it to condense into droplets like fog.
  25. In the afternoon of the weather day, the __water______vapor’s condensation processes starts to form cumulus clouds. Warm air rises, taking its water vapor with it, but as it cools, the moisture forms tiny droplets.
  26. Hailstones do more than _300____ million dollars worth of damage every year.
  27. Stormy weather is often due to weather patterns known as __depressions______. There are born out of the clash between warm, damp air from over the topics and cold dry air from the poles.
  28. As they collide, the warm air rises over the cold. The edges of the air masses are known as __fronts____.
  29. As storms move over warm, open water, more clouds form and the spiral quickens. Soon the howling, whirling mass of air is heading towards land. A _hurricane_____ is on the way!
  30. __Rainbows__ are refractions of the sun’s rays through water droplets in the air.
  31. In a thunderstorm, positively charged particles gather at the top of the cloud and negatively charged ones at the bottom. The energy is discharged as light, heat and _sound______.
  32. A bolt of lightening carries about a _million_____ volts.