WIND.

Slides:



Advertisements
Similar presentations
Global Winds Winds that blow steadily from specific directions over long distances.
Advertisements

Chapter 16 Section 3: Winds.
Mrs. Wharton’s Science Class
Global and Local Winds.
WIND Wind is movement of air caused by differences in air pressure.
Chapter 19. © Air pressure weight of air above © Exerted in all directions (up, down, and sideways)
Understanding Air Pressure
Unit 2: Surface Processes and the Hydrosphere Lesson 2: Wind and the Coriolis effect ( Heath Earth Science – Pg )
Warm Up 3/20/08 1) What source of energy fuels the wind? 2) Which of the following statements about air pressure is NOT true? a. Air pressure is exerted.
 Air Pressure – the weight of the gases in the atmosphere pushing on the surface of the Earth.
Chapter 2 Weather Factors Section 3 Winds. What causes wind? Wind: The horizontal movement of air from an area of high pressure to an area of lower pressure.
CHAPTER 19.1 Understanding Air Pressure.  Air pressure is very important for making changes in the weather.  Air pressure is the pressure exerted by.
Ch. 2 Sec. 3 WINDS. OBJECTIVE #1: Describe the factors that influence wind. OBJECTIVE #2: DISTINGUISH BETWEEN LOCAL AND GLOBAL WINDS AND LOCATE THE MAJOR.
Add to table of contents: Tornado scalePg. 94 Air pressure & windPg. 95.
Heating the Earth Weather is the daily conditions of the atmosphere The factors that interact to cause weather are heat energy, air pressure, winds, and.
Atmospheric Circulation The Coriolis Effect, Winds and Breezes Chapter 22.3.
 1. Which layer of the atmosphere has the coldest temperatures?  2. In which layer/s do we fly airplanes?  3. How does pressure change as elevation.
Weather Basics Air Pressure and Winds. Air Pressure Air has a mass and exerts a force called atmospheric pressure Air pressure is measured in millibars.
Global and Local Winds. What is Wind? The movement of air caused by differences in air pressure. These differences in air pressure are generally caused.
Wind Atmospheric Circulation (22:39min). Wind The horizontal movement of air from an area of high pressure to an area of lower pressure. Caused by the.
Atmospheric Pressure and Wind
• At the poles (areas which receive less solar radiation), the air is cold and descends towards the equator through the lower layers of the atmosphere.
Chapter 19 Air Pressure and Wind Who is Stan Hatfield and Ken Pinzke.
Questions of the Day Describe how wind is created.
Chapter 15 Section 3 Global and Local Winds.
What is wind?.
Wind and the Coriolis Effect
OCEAN SURFACE CURRENTS
Global Winds.
Global and Local Winds.
14.3 Air Movement and Wind.
Air Pressure and Wind Air Pressure
Understanding Wind.
19.1 – Understanding Air Pressure
Wind and Currents Heat from the sun makes wind. Wind causes currents and waves. Winds are named based on where they start.
Global Winds.
REMINDER – QUIZ CH.11 WEDNESDAY
19.1 Understanding Air Pressure & Wind
Winds Trimester 2.
WINDS.
Warm-up What is weather?.
Air Pressure And Wind Chapter 19.
Welcome Back! You will have the first 15 minutes of class to complete and print your lab. Remember, focusing and giving 100% in class will allow us to.
PLANETARY WIND SYSTEM.
15.3 Global Winds and Local Winds
Wind.
Just how does it work? Atmospheric pressure= 14.7 psi
Wind Causes of Wind.
How are clouds formed. Weather
Wind and the Coriolis Effect
Global and Local Winds.
Global Winds.
Wind Notes 2012.
Global Winds Winds that blow over a long distance
AIR currents Chapter 12 Lesson 3.
Wind Systems.
Air Pressure and Wind.
Weather Notes Part 3.
The Atmosphere Done by: Ali shamsah 8-3.
Temperature Conversion
14.3 Air Movement and Wind.
Just how does it work? Atmospheric pressure= 14.7 psi
Global and Local Winds.
Title: Atmosphere in Motion; Wind Bands Page #: 75 Date: 2/25/2013
Global Winds.
Wind and the Coriolis Effect
Weather Systems 12.2.
WIND Pages
Wind coulter.
Air Pressure and Winds Earth Science Ch. 19.
Presentation transcript:

WIND

HOW DOES WIND FORM?

ATOMOSPHERIC PRESSURE The weight of the air above us pushing down causes the atmospheric pressure.

ATMOSPHERIC PRESSURE The air is being pulled to the ground by gravity. The more air there is above us, the greater the pressure.

Aneroid Barometer = "without" liquid A barometer is an instrument used to measure atmospheric pressure. Aneroid Barometer = "without" liquid

WIND Wind is the horizontal flow of air. Differences in horizontal air pressure cause wind. Air flows from areas of higher pressure to areas of lower pressure.

WIND Wind is basically nature’s attempt to balance inequalities in air pressure. Since, unequal heating of Earth’s surface generates these pressure differences, solar energy is the ultimate energy source for most wind. Wind moves from: HIGH pressure low pressure

Local Winds Whats happening here?

LOCAL WINDS

Local Breezes Causing Weather

Wind Belts (Northern Hemisphere) Trade Winds Winds flowing toward the equator between 30o and 0o latitude. Flow from the Northeast, hence called “Northeast Trade Winds”

Wind Belts (Northern Hemisphere) Westerlies the prevailing winds in the middle latitudes between 30 and 60 degrees latitude. blowing from the high pressure area in the horse latitudes towards the poles.

Wind Belts (Northern Hemisphere) Polar Easterlies dry, cold prevailing winds that blow from the high-pressure areas of the polar highs at the North poles towards the low-pressure areas of the polar fronts between 60 and 90 degrees.

   All free moving objects or fluids, including the wind, are deflected to the right of their path of motion in the Northern Hemisphere and to the left in the Southern Hemisphere. This is known as the Coriolis Effect and is due to the rotation of Earth.

This same deflection is experienced by wind, and the apparent shift in wind direction is attributed to the Coriolis Effect.

Wind is controlled largely by the following two forces: 1 Wind is controlled largely by the following two forces: 1. Pressure Gradient Force 2. the Coriolis Effect. ISOBARS show pressure differences that create wind and the greater these differences, the greater the wind speed. Pressure data is shown on a weather map using isobars, which are black lines that connect places of equal air pressure.

Which way is the wind blowing?