Isobars and Air Pressure Eric Angat Teacher Isobars

Isobars and Air Pressure Eric Angat Teacher

Isobars line of constant pressure http: //clem. mscd. edu/~sng 1/MTR 2400/LP 8. htm

Isobars line of constant pressure What is the direction of the wind? Low pressure means bad weather. The wind rotates High pressure means COUNTERCLOCKWISE. good weather. The wind rotates CLOCKWISE. http: //ww 2010. atmos. uiuc. edu/(Gl)/guides/maps/sfcobs/cntr/wind. rxml

Air Pressure Explained! 1. What happens to the density of air as we go higher up in the atmosphere? 2. When does air contract? 3. When does air expand? 4. What is a barometer? 5. What does it mean by low pressure (L)? 6. What does it mean by high pressure (H)?

Air Pressure Explained! https: //www. youtube. com/watch? v=jm. Q 8 FWn. M 0 f. A http: //spot. pcc. edu/~lkidoguc/Aquatics/Aq. Ex/Water. htm

Air Pressure Explained! 1. What happens to the density of air as we go higher up in the atmosphere? The density of air decreases because of lower air pressure. 2. When does air contract? Air contracts when it is cooled. 3. When does air expand? Air expands when it is heated. 4. What is a barometer? Barometer is an instrument that measures air pressure. 5. What does it mean by low pressure (L)? Low pressure means bad weather and precipitation. 6. What does it mean by high pressure (H)? High pressure means good weather.

Isobar Contours 7. What is the average atmospheric pressure? 8. What are low pressures? 9. What are high pressures? 10. What is the interval between isobars? 11. Which states have bad weather? 12. What do you notice about the distances between isobars in areas of low pressure compared to the area of high pressure?

http: //theweatherwiz. com/school/chpt 2 a. htm Isobar Contours

Isobar Contours 7. What is the average atmospheric pressure? 1013 millibars 8. What are low pressures? Lower than 1013 millibars is low pressure. 9. What are high pressures? Higher than 1013 millibars is high pressure. 10. What is the interval between isobars? Interval is 4 millibars 11. Which states have bad weather? Arizona and Tennessee 12. What do you notice about the distances between isobars in areas of low pressure compared to the area of high pressure? Isobars in low pressure areas are closer to each other while isobars of high pressure areas are farther away from each other.

13. How do I draw Isobars http: //facweb. bhc. edu/academics/science/harwoodr/GEOL 101/Labs/Wind/index. htm

Isobars are lines of constant pressures. 1024 1036 1027 1033 1035 1029 Isobars have 1022 intervals of 4 mb. 992 996 1000 1004 1008

Isobars are lines of constant pressures. 1024 1036 1027 1033 1035 1029 1022 Find the lowest air pressure that has an interval of 4.

Isobars have intervals of 4 mb. 1024 1036 Not windy 1033 1035 Connect the 1022 isobars starting from 1024 mb. 1027 1024 mb 1029 1028 mb 1032 mb windy 1036 mb

Isobars are lines of constant pressures.

13. How do I draw Isobars Isobar lines are drawn across equal air pressures with interval of 4 millibars. When isobars are close to each other, it is windy. When isobars are farther away from each othere is light wind.

Predict the Weather 14. What are isobars? 15. What kind of wind is present when isobars are close together? 16. What kind of wind is present when isobars are wider apart from one another? 17. Why do we need to know the direction of the wind when predicting the weather? Think!

Predict the Weather http: //mrsdlovesscience. com/weathermap. html

Predict the Weather 14. What are isobars? Isobars are lines of constant pressures. 15. What kind of wind is present when isobars are close together? Wind is strong. 16. What kind of wind is present when isobars are wider apart from one another? Wind is light. 17. Why do we need to know the direction of the wind when predicting the weather? Think! So that we can predict the direction of the front.

18. Using the weather map, identify the air pressure in the following states.

16 20 16 12 24 H 8 L

KEY: a. California __1016_____ b. Nevada _____1020___________ c. Utah, Wyoming, Colorado ______1024______ d. North Carolina _______1012_______ e. Indiana, Ohio, Kentucky ______1008____ f. Wisconsin _____1012________ 19. Which states are experiencing good weather? ______ Utah, Wyoming, Colorado _____ 20. Which states are experiencing bad weather? ____ Indiana, Ohio, Kentucky ______