1 ATMOSPHERIC PRESSURE & DENSITY. 2 The denser the atmosphere…  the greater its weight, and  the greater its air pressure.

Slides:

Advertisements

Similar presentations

What gas makes up 78% of our atmosphere?

Advertisements

Weather Measurements What’s up with the weather?.

Atmospheric Temperature, Pressure and Density. What is Weather? Weather is the condition of the variables of the atmosphere for any given location for.

The Air Around You Section 15:1.

How do you measure Air Pressure?. Air Pressure or Barometric Pressure? Ever hear of either before? It is the measure of the weight of air pressing down.

Air Pressure Can you feel it?.

Air Pressure Air Pressure Just how does it work?.

Chapter 10, Lesson 3 Atmosphere and Air Temperature

Bell Ringer Be sure to put the date on the outside of the page! Copy down the question below and answer it. 1.What is the composition of air?

Aim: What is Pressure and what does it make? Do Now: Define Pressure. Give an example of pressure change from an experience you had.

The Air Around You. Earth’s Atmosphere Earth’s atmosphere is the envelope of gasses that surround the planet. Nitrogen makes up 78% of our air Oxygen.

Air Pressure 5.4.

TA11C – Learn About Air Pressure Use with BrishLab ES11C This material is CC by StarMaterials.com.

Diagram Explanation: Written Explanation: Can Demonstration.

The study of weather = METEROLOGY The study of weather = METEROLOGY Weather is the condition of the atmosphere at any given time or place Weather is the.

Energy Exchanges in the Atmosphere Atmosphere - blanket of gas that surrounds the earth (the air around us)

The Atmosphere Notes 7th Grade Science.

Air Pressure Chapter 1, Section 2, p Properties of Air Air has mass – Air is made of atoms & molecules – Atoms & molecules have mass How can you.

Warm-up What is the source of energy that drives convection within the atmosphere and oceans? A. Earth’s rotation B. The sun C. Hurricanes D. Heat from.

TOPIC 7. What is weather? Weather is the state or condition of the variables of the atmosphere at any given location for a short period of time.

Air Temperature, Pressure, and Density

Characteristics of the Atmosphere. The Composition of the Atmosphere The atmosphere is made of 78% Nitrogen gas and about 21% oxygen. The atmosphere also.

Air Pressure. Does Air Have Mass?  Air consists of atoms and molecules, which have mass.  Because air has mass, it also has other properties, including.

What is the approximate air pressure at 5 miles above sea level?

Bell Question: Using the captions to help you, explain why one of these containers was deformed. Picture 1: The Pringles can I packed from home is bulging.

Air Pressure Air has mass, density, and pressure. Density Density- amount of mass in a given volume of air D= Mass Volume More molecules in a given volume.

Unit 1 Section 3 Air Pressure. What is Air Pressure? How do you measure atmospheric pressure?

How do people with arthritis know when it’s going to rain?

Ms. Longo Earth Science Weather & Water Announcements Bring a book for SSR tomorrow No school Friday No Saturday school this week.

 The condition of Earth’s atmosphere at a particular time and place.

Do Now: Air rises ___________ and ____________ Air rises ___________ and ____________ Air sinks ___________ and ____________ Air sinks ___________ and.

Air Pressure Notes. Properties of Air Oxygen (O 2 ) Nitrogen (N 2 ) CO 2, H 2 O, and others.

ATMOSPHERIC PRESSURE zl657tCCudw.

The Air Around You Section 15:1.

Weather Lesson Two Pressure and Wind.

AIR PRESSURE What caused this tank car to crush? 1.

Air Pressure The Air Around You.

Air Pressure Just how does it work?.

New Unit! Weather Variables

Air Pressure Ch 15-1b.

Air Pressure Can you feel it?.

L.O: students will be able to describe air temperature and air pressure Do Now: Answer the Regents questions AND open your reference tables to page.

Chapter 10, Lesson 3 Atmosphere and Air Temperature

Aim: How does atmospheric pressure predict the weather?

Properties of the Atmosphere

Does air have mass?.

AIR PRESSURE Does Science Suck?.

Chapter 19: The Atmosphere in Motion

Air Pressure Can you feel it?.

Which temperature zone of the atmosphere contains this ozone layer?

Temperature, altitude and density affect air pressure

Air Pressure Can you feel it?.

Unit: Water and the Atmosphere Lesson 2: Air Pressure

Temperature Conversion

Aim: How can we explain air pressure?

Air Pressure and Wind Pages

Air Pressure Can you feel it?.

Chapter 1.2 Air Pressure pgs 10-14

Air Pressure Can you feel it?.

Atmospheric Pressure.

Presentation transcript:

1 ATMOSPHERIC PRESSURE & DENSITY

2 The denser the atmosphere…  the greater its weight, and  the greater its air pressure.

3 atmospheric pressure - a.k.a.; barometric pressure or air pressure. the pressure due to the weight of the overlying atmosphere. diagram

4 Measurement of and Changes in Air Pressure The instrument that is used to measure air pressure is a… barometer. Mercury barometer

5

6 Air pressure is measure in either 1)Millibars 2)Inches

7 To convert from millibars to inches of mercury use the Earth Science Reference Tables, page 13. Examples. 1)976.0 mb = 2) mb = 3)30.00 inches = 4)29.09 inches = inches inches mb mb

8 Lines drawn on a weather map that connect locations that have the same barometric pressure are called… isobars

9

10

11

12

13 The Effect of Temperature on Air Pressure. As the temperature of the air increases, the air expands and its density and pressure decrease. example; Hot Air Balloon

14 The Effect of Water Vapor on Air Pressure. The greater the amount of water vapor in the air, the lower the air density and pressure. molecular weight water (H 2 0) 1(2) + 16 = 18 molecular weight air Nitrogen (N 2 )Oxygen (O 2 ) 14 (2) = 2816 (2) = 32 one molecule of water weighs less than one molecule of air.

15 The Effect of Altitude on Atmospheric Pressure. As altitude or elevation increases, atmospheric density and pressure decrease. diagram

16 less pressure more pressure

17 SUMMARY; As either altitude, temperature or moisture content increases, air pressure decreases.