1. Monday, April 17th
Entry Task Explain what happens when air is heated from below.
Schedule:
Wild weather
Objective: I will be introduced to Chapter 16, Weather Patterns
Homework:
Title page complete and colored, neat video notes complete
Please have on your desk:
ISN

2. Tuesday, April 18th Entry Task Answer the following, IQIA.
What is the distance above sea level called?
What is the term for the amount of mass in a given volume?
What is name of the whole layer of air that surrounds Earth?
Schedule:
16.1 Air pressure
Objective: I can describe how air pressure varies
Homework:
Complete T-chart output page
Please have on desk:
ISN and entry task booklet

3. Wednesday, April 19th
Entry Task True or false. Write the statement as is if true, rewrite it correctly if false. Differences in pressure cause the movement of air. Air pressure and air density increase with altitude. The Sun supplies most of Earth’s energy.
Schedule:
16.1 Air Pressure
Objective: I will explain how moving molecules cause air pressure.
Homework
Answer #1-6, page 542, IQIA
Please have on desk:
ISN open to 16.1 notes and output

4. Air Pressure

5. How do atoms and molecules in the atmosphere move?
Atoms and molecules in the atmosphere move in random directions.

6. What happens when molecules hit each other?
When molecules bounce against one another, they exert a force. These are very small bits of force; however, when you add all the small bits of force together, then the force could be considerable.
Air pressure = the force of air molecules pushing on an area.

7. How do you increase air pressure?
adding molecules to a confined space
adding heat to a container ~ The molecules will move more quickly; thereby, striking with a greater force.

8. What is high air pressure?
When the atmosphere presses down with more force, we say that it is a high pressure.
High pressure is when the molecules in the atmosphere are more tightly packed together.

9. What is low air pressure?
When the atmosphere presses in with less force, we say that there is a low pressure in the area.
Low pressure is when the molecules in the atmosphere are more loosely packed together.

10. Comparing high and low air pressure

11. What happens to the atmosphere when it is heated?
When the atmosphere is heated, it expands. The density of the gas molecules lessens creating a lower pressure.

12. How is air pressure on Earth compared?
Comparing air pressure on Earth is not easy since pressure decreases with height. Because of this, a common denominator is needed.
Calculations are used to convert the values from different locations as if they were all at sea-level.

13. What units is air pressure measured in?
The most common units used in the United States to measure air pressure are:
Inches of Mercury
~ At sea level, standard air pressure is inches of mercury.

14. What units is air pressure measured in?
Millibars
~ At sea level, the standard air pressure in millibars is

15. A barometer is used to measure air pressure
High or Low Pressure?

16. Watch the “Spangler Effect: Ultimate Can Crusher” on YouTube

17. Air pressure
The Spangler Effect:

18. Thursday, April 20th
Entry Task Explain how differences in air pressure affect the movement of air molecules.
Schedule:
Wind notes
Objective: I can describe the forces that affect wind.
Homework:
16.2 RSG
Please have on desk:
ISN open to 16.1 questions

19. The Atmosphere has Wind Patterns.

20. Wind Wind is the motion of air.
It is caused by the uneven heating of Earth’s surface.
Air moves from areas of high density to areas of low density.
Density can be measured through atmospheric pressure.
Wind direction is measured with a wind vane and wind speed is measured with an anemometer.

21. There are 3 forces that affect the way wind blows The Pressure Gradient Force
The pressure gradient force tries to equalize the pressure differences. This causes high pressures to push air toward low pressures.
If wind was under the effect of the pressure gradient force only, it would flow directly from high pressure regions to low pressure regions.

22. The Coriolis Effect The Coriolis Force is caused by Earth’s Rotation.
Global winds curve as Earth turns beneath them.
Winds in the Northern Hemisphere turn away from the equator in a clockwise direction.
Winds in the Southern Hemisphere turn away from the equator in a counter-clockwise direction.

23. Friction The rough surface of Earth slows down the wind.
Question: Where would you expect stronger winds, The Tri-Cities or Seattle?

24. How Does Earth’s Rotation Affect Wind?
Blow up a Balloon.
Have a partner slowly rotate the balloon to the right. Draw a line straight down from the top of the balloon to the center of the balloon as it rotates.
Now draw a straight line up from the bottom of the balloon straight up to the center as the balloon rotates.

25. What do You Think? How did the rotation affect the lines?
How does this activity demonstrate the Coriolis Effect?
How might changing the speed of the balloon’s rotation affect your results?
Test your prediction.

26. Pressure Gradient Force
On the diagram use arrows to indicate the direction of air flow due to the pressure gradient force.

27. PGF + Coriolis Force (Effect)
On the diagram use arrows to indicate the direction of air flow due to the Pressure Gradient force and the Coriolis force.

28. PGF + Coriolis Force + Friction
Now combine the three forces to indicate wind direction.

29. Low Pressure Center
Winds converge (come together) in low pressure regions as air is pushed away from high pressure regions.
The air in the center must go somewhere, so when air converges near a low, it is forced upward.
As the air cools, it cannot hold water vapor. This vapor condenses, which forms clouds and precipitation.
Rain, sleet, hail, and snow often take place near low pressure areas.

30. High Pressure Center
When air diverges (moves away from) high pressure areas, the air above sinks to fill the empty space.
The sinking air warms.
As the air warms, it can hold more water vapor.
The clouds will evaporate.
Due to this, high pressure areas are usually dry.

31. Friday, April 21st
Entry Task Identify what factor determines the strength of wind.
Schedule:
16.2 Wind patterns
Objective: I can explain patterns of heating and cooling.
Homework
Questions #1-6, page 550, IQIA
Please have on desk:
ISN open to 16.2 RSG

32. Narrow regions of air travel in west to east flowing jet streams about 12 km above the surface of Earth just under the stratosphere
Air Flow

33. Air Flow
These winds are fast moving currents of air that run for several thousand miles but are relatively thin. They move in a wavy pattern following the contours of low and high pressure areas

34. The wavy path changes positions with the seasons
The wavy path changes positions with the seasons. During the winder months, jet streams are stronger because Polar Regions become colder, but the temperature near the equator stays about the same
Air Flow

35. North
Jet streams bring cool, polar air down from the north and warm, tropical air up from the south. If the ridge of the jet stream is sitting over you it is generally warm and dry. If the trough is sitting under you , it is generally very cold and snowy or rainy
Air Flow
South

36. Answer the following on ISN 56. IQIA.
What is the relationship between air pressure and wind?
The uneven heating of Earth causes what?
What factor determines the strength of wind?
What winds travel thousand of kilometers in steady patterns?
What causes the Coriolis effect?
Global winds travel along how many routes in each hemisphere?
In which direction do winds curve in the Northern Hemisphere?

37. What is the relationship between air pressure and wind
What is the relationship between air pressure and wind? Differences in air pressure cause winds
The uneven heating of Earth causes what? Air circulation
What factor determines the strength of wind? The difference in air pressure between two areas determines the strength of wind
What winds travel thousand of kilometers in steady patterns? Global winds
What causes the Coriolis effect? Earth’s rotation
Global winds travel along how many routes in each hemisphere? Three
In which direction do winds curve in the Northern Hemisphere? To the right