Science We need cotton balls Do Now: 3/12 Can you bring some?

Slides:

Advertisements

Similar presentations

Understanding Weather

Advertisements

Water in the Air Pgs

Weather and Climate Chapter 2 February, 2011.

What do clouds have to do with weather? What is it? - A measure of the amount of water vapor in the air.

Water in the Atmosphere Chapter 6 Section 1. Standard S 6.4 a Students know the sun is the major source of energy for phenomena on Earth’s surface; it.

UNDERSTANDING WEATHER. The Water cycle The amount of water vapor in the air is called humidity. As water evaporates and becomes air vapor, the humidity.

Water in the Atmosphere. Humidity Humidity is a measure of the amount of water vapor in the air. Air’s ability to hold water vapor depends on its temperature.

Humidity Water in the Air. Humidity is: A measure of the amount of water in the air Water is added to the air by the process of EVAPORATION.

Notes on Weather A.Weather is the short term condition of the atmosphere over a small area. B.Weather is described by its conditions, or variables that.

SC.D CS The student knows that the water cycle is influenced by temperature, pressure, and the topography of the land. Content Limits: Items will.

Water in the Atmosphere. Key Terms to understand The Water Cycle Evaporation - Condensation – process by which molecules of water vapor in the air become.

The Water Cycle and Weather Mr. Leslie’s Science Class.

Moisture in the Air.

Water, The Atmosphere, and You. The Changing Forms of Water Water is the only substance on earth to naturally exist as a solid, liquid, and gas –Evaporation.

The Water Cycle AND Cloud Types.

Study Guide Test 12/16 Topics Include: Relative Humidity Dew Point Cloud Formation Air Masses Fronts.

SUMMARY OF LESSON  Vocabulary  Evaporation, Condensation, Precipitation  Groundwater and Runoff  Types of Clouds  Convection Currents.

The Atmosphere Chapter 16 Section 1. The Water Cycle The water cycle is a continuous movement of water from water sources, such as lakes and oceans Condensation.

Chapter 16 Section 4: Water in the Atmosphere. Section 4 Humidity (is a measure of the amount of water vapor in the air) – The movement of water between.

Water in the Atmosphere

Bell work  How do you think clouds are created?  We are doing a mini lab today…be good or I WILL send you OUT!

Water Vapor and the Atmosphere. Water in the Atmosphere © Precipitation is any form of water that falls from a cloud. © When it comes to understanding.

16-4 Water in the Atmosphere 1

Objective: Determine where clouds form using dewpoint and relative humidity Agenda: Cloud Notes Cloudbase lab Wind Notes Isobar practice.

What is the weather forecast?. Condition of the atmosphere at a certain time and place Affected by the amount of water in the air Must understand water.

Science ~ chapter 8 weather

Topic 7. What is atmospheric moisture? Atmospheric moisture refers to the amount of water in the air All 3 phases are included: solid, liquid and gas.

Chapter 9: Weather Factors Section 4: Water In the Atmosphere.

Water in the atmosphere and precipitation.. Activator Work on project for 10 minutes Or read quietly.

1._____process that forms clouds (water cycle 2) 2._____ process that adds heat and changes liquid water to water vapor (water cycle) 3._____what powers.

 The movement of water through a cycle by phase changes: liquid, gas, and solid water.  Condensation- vapor cools and becomes liquid droplets  Evaporation-

HUMIDITY AND DEW POINT. CONDENSATION � H2O can exist in solid, liquid, or gaseous states. Change from liquid to gas is evaporation. Change from gas to.

Water in the atmosphere

Weather How do you determine the weather?. Weather Refers to the state of the atmosphere at a specific time and place. What does it look like outside.

Chapter 16.1 Water in the Air.

Unit: Weather Pt. 3 – Water in the Atmosphere 4c. Examine weather forecasting and describe how meteorologists use atmospheric features and technology to.

HUMIDITY AND DEW POINT DEW POINT The dewpoint is the temperature of air which is needed for condensation or dew (at that particular temperature). If.

Physical Science 22 Water and Wind. Objectives Describe the three phases of the water cycle Explain how temperature and humidity are related Identify.

Water in the Atmosphere

Ch What is weather?. Weather is The state of the atmosphere at a specific time and place Sun provides almost all of Earth’s energy.

Ch. 2 Sec. 4 Water in the Atmosphere. OBJECTIVE: Describe types of precipitation and Humidity and explain how they are measured.

What is a cloud? How do clouds form? How are clouds named?

Chapter 16 Understanding Weather: “Back to Basics” A Unit Review!

Right Now : Get 7.1 Notes Agenda : Water in the Air - Water Cycle - Humidity - Condensation Standard : Analyze meteorological data to predict weather conditions.

Water in the Atmosphere

1._____process that forms clouds (water cycle 2) 2.____ layer of atmosphere that weather occurs in (atm layers) 3._____ process that adds heat and changes.

Understanding Weather

Chapter 2: Understanding Weather Mrs. Fantuzzo

DO Now 1._____ layer that satellites orbit (atm layers) 2._____ most abundant gas in the atmosphere (atmosphere) 3._____changes from water vapor to a liquid.

Bell work Observe two glasses of water. One is filled with ice water, and one is filled with warm water. Why do water droplets form on the outside of the.

Weather The condition of the atmosphere at a certain time & place.

CLOUDS. Cloud Formation As warm air cools, the amount of water vapor increases (humidity rises). When the air is saturated with water vapor tiny water.

Water in the Atmosphere Chapter 16 Section 4 Pages Chapter 16 Section 4 Pages

Earth Science Chapter 8 Weather. Water in the Atmosphere  Water Cycle: –Evaporation  Condensation  Precipitation  Runoff.

Chapter 7 Weather The condition of the atmosphere at a certain time and place. is affected by the amount of water in the air. Water in liquid, solid, and.

Water in the Air Chapter 3 Section 1 pg. 76 The Water Cycle  The continuous movement of water from sources on Earth’s surface—such as lakes, oceans,

Water in the Atmosphere. Earth’s surface is covered mainly by water. Oceans cover about 70% of our planet’s surface.

Factors that affect weather

Weather: the present state of the atmosphere and the current conditions Factors that effect the weather: air pressure, wind, temperature, and humidity.

H20 In The Atmosphere Notes.

Chapter 2: Understanding Weather

Water in the Air Week 4.

Water in the Air.

H20 In The Atmosphere Notes.

Water in the Atmosphere

H20 In The Atmosphere Notes.

H20 In The Atmosphere Notes.

Presentation transcript:

Science We need cotton balls Do Now: 3/12 Can you bring some? HW: Read 16-1 and study for quiz 1. Clear your table for the quiz Today ~ TTK 16:1 quiz and check ~ Complete PPT w/notes: Water in the Air

The Water Cycle The transfer of water between the atmosphere and Earth’s surface. Water evaporates from plants and bodies of water Water condenses in the atmosphere and forms clouds Clouds become saturated and water falls as precipitation to the surface Water runs off surface into lakes, streams and oceans.

What is Humidity? The amount of water vapor in the air. As water evaporates it becomes water vapor. Water vapor is invisible. Warm air can hold more water vapor

What is Relative Humidity? Amount of water vapor in the air compared to the amount of water the air can hold. A percentage % Air holds all the water vapor it can = Saturated = 100% RH

Figuring Relative Humidity _actual water vapor content (g/m³)__ X 100 = RH saturation water vapor content(g/m³) 1 m³ of air at 10ºC has 5g of water vapor but, at this temperature it can hold 8g Calculate RH 5 g X 100 = 63% 8 g Air holds 13g but can hold 25g 13 g X 100 = 52% 25 g

Factors Affecting Relative Humidity The amount of water vapor The temperature If the water vapor stays the same: Temperature goes down RH%  up Temperature goes up RH%  down

How does that work??? Temperature ºC Saturated g 15 10 20 25 At 20 ºC with 15g of water vapor RH = 100% Temperature goes up to 25 ºC air could hold 20g So… 15g (what it has) X 100 = 75% 20g (what it could have)

Measuring Relative Humidity 1. Measured with a psychrometer 2. Has two thermometers * 1 wet bulb * 1 dry bulb Use the dry bulb temp and the chart

Determining Relative Humidity Use your book; page 484 Determine the relative humidity for the following days Day DryºC WetºC DifferºC RH % Mon 16 18 Tue 20 Wed 21

Determining Relative Humidity Day DryºC WetºC DifferºC RH % Mon 16 18 2 81 Tue 20 4 63 Wed 21 3 73

Condensation 1. Water vapor becomes a liquid 2. Happens when air is saturated 3. Air cools to 100% relative humidity

Dew Point Temperature at which the air is saturated & condensation occurs Where does the water on the outside of a glass come from??? The cold liquid in the glass cools the air outside of the glass Air next to the glass reaches its Dew Point Water vapor in the air condenses on the glass! Quick Lab: pg 485 What is the dew point temperature in the classroom today?

Clouds A collection on millions of tiny water droplets or ice crystals Warm air rises  cools to dew point water vapor condenses to a liquid/solid Altitude and form/shape

Forms of Clouds Cumulus: Fluffy white with flat bottoms Stratus: Form in layers, cover large areas of sky Cirrus: Thin, feathery form at high altitudes

Altitude of Clouds Cirro – forms at high altitude made of ice crystals Alto – middle altitudes made of ice crystals & water droplets Low altitudes have no special prefix