U RBAN H EAT I SLAND : W HY IT IS HOTTER IN THE CITY THAN IN THE COUNTRYSIDE ? Los Angeles Model By Fernando Olmos 3/15/13.

Slides:

Advertisements

Similar presentations

Welcome Students!. How do you feel in the sunlight? Warm!

Advertisements

Heat Transfer, Greenhouse Effect, Ozone Layer Notes

»Heat Transfer describes the exchange of thermal energy…

Hot Stuff The three forms of heat transfer. Heat Transfer What is Heat Transfer? How many types of heat transfer are there, and what are they?

Chapter 22 Heat Transfer.

Remember! Heat is transferred in three different ways:

Objectives Describe the composition of Earth’s atmosphere.

THERMAL ENERGY AND HEAT Jennefer Cardenas. Objectives Students will be able to identify and know difference between THERMAL ENERGY, TEMPERATURE, and HEAT.

ENERGY FROM THE SUN Chapter 14.3 Pages Energy in the Atmosphere The sun is the source of ALL energy in our atmosphere. Three things that can.

Heat & Heat Transfer Heat: Heat is energy! Heat is the energy transferred (passed) from a hotter object to a cooler object. Heat Transfer: The transfer.

CHAPTER 14 Energy in the Atmosphere Section 1, pages

Heat Transfer. Energy transfer from a HOTTER object to a COOLER one.

Climate Long time, Large Area. Weather short term, small area.

Heat Transfer Chapter 2, Section 2 p How Heat is Transferred Heat: the energy transferred from a hotter object to a cooler one.

Heat Transfer. Heat is the transfer of thermal energy between substances that are at different temperatures.

Thermal Energy. Thermal Energy vs. Temperature TEMPERATURE: Measure of the AVERAGE kinetic energy in the particles of a substance. – how fast the particles.

Earth’s Energy Budget. Modes of Energy Travel Heat Energy can be transferred in three specific ways: Heat Energy can be transferred in three specific.

Energy Balance Chapter 18.

Heat Transfer. Heat transfer Everything is made of molecules. When molecules gain energy they move faster and create more heat. (The faster the molecules.

Chapter 2 Weather Factors Section 2 Heat Transfer.

Solar Energy Heat and Light. Energy Can take many different forms –____________ –Heat –____________.

Heat Transfer in the Atmosphere Essential Question: How is heat transferred in the atmosphere?

What processes heat the atmosphere?

Energy Transfer In the atmosphere.

A TMOSPHERIC H EATING Heat transfer. R ADIATION : S OLAR E NERGY T RANSFERS BY W AVES Radiation: is energy that is transferred as electromagnetic waves,

Heat Transfer Conduction, Convection, Radiation. Three Main Processes of Heat Transfer  Conduction  Convection  Radiation.

EARTH’S ENERGY. Energy from the Sun Nearly all of Earth’s atmosphere energy comes from the sun as electromagnetic waves. Most of the energy comes from.

Do Now: Based on the notes from last week, what is the difference between temperature and heat?

Transmission of Heat. Conduction of heat Takes place within certain materials and from one of these materials to another when they are in direct contact.

THERMAL ENERGY TRANSFER NOTES. THERMAL ENERGY Total amount of energy in an object’s moving molecules. Heat--flow of thermal energy from a warmer object.

Solar Unit. More vocab from Nova – Saved by the Sun Greenhouse gas – Gases that can absorb and emit infrared radiation.infrared radiation By their percentage.

Heat Transfer, Albedo, and the Natural Greenhouse Effect.

Thermal Energy Question Review

Ch Energy II. Thermal Energy  Temperature  Thermal Energy  Heat Transfer.

Heat Movement. Golden Rule of Heat Movement The golden rule is… Heat always moves from a warmer object to a cooler object. You can think of it like water,

3.3 Radiation Can heat be transferred from the Sun to us through conduction and convection? What is radiation? No! Conduction and convection cannot transfer.

Thermal and Chemical Energy. Thermal Energy Thermal Energy Thermal energy is kinetic energy because molecules are in motion. Temperature Temperature =

On a hot sunny day, did you ever see cars, buildings, or other objects appear to shimmer or waver on the other side of a street or parking lot? What causes.

Transfer of Energy. How heat (energy) moves. What does “Transfer of Energy” mean?

Atmospheric Heating Radiation Conduction Convection.

Thermal Energy Mr. Ford -8 th Grade Science. Temperature The measurement of the speed of molecules. It’s an average. The more kinetic energy means higher.

Standards 3: Thermal Energy How Heat Moves  How heat energy transfers through solid.  By direct contact from HOT objects to COLD objects.

Convection Currents Heat is always transferred from warmer substance to a cooler substance. Write down some examples of this concept:

I. WHAT IS TEMPERATURE? We don’t use the terms hot and cold often in science because they are relative terms: They could mean different things depending.

Do Now: In you notes, describe what happens to an object as heat (energy) is added to it. What changes take place, what happens to the molecules? With.

Section 3.2 The Atmosphere

* Materials that allow heat, electricity, or sound waves to pass through them.

Radiation, Conduction, Convection

Strategies to Reduce Urban Heat Islands

Heat in the Atmosphere.

Chapter 2; Section 2 Atmospheric Heating

Heat & Heat Transfer Heat: Heat is energy! Heat is the energy transferred (passed) from a hotter object to a cooler object. Heat Transfer: The transfer.

Energy in the Atmosphere

II)Convection in the Mantle

Energy in the Atmosphere

Energy Transfer In the atmosphere.

Earth’s Changing Atmosphere

Chapter 2; Section 2 Atmospheric Heating

Unit 3 - Energy Learning Target 3.4 – Define Temperature and explain how thermal energy is transferred (conduction, convection, & radiation)

Heat Transfer Science Vocabulary

Temperature Is a property of an object which determines the direction of net heat flow when an object is placed in contact with some other object. Heat.

Energy Flow On Earth.

Heat Temperature Conduction Convection Radiation

Transfer of Energy.

The Sun is the source of energy for the Earth.

Chapter 3 Section 2.

Presentation transcript:

U RBAN H EAT I SLAND : W HY IT IS HOTTER IN THE CITY THAN IN THE COUNTRYSIDE ? Los Angeles Model By Fernando Olmos 3/15/13

L ESSON O UTLINE Day 1 Presentation of the Urban Heat Island Effect Hands-on activities at the stations Day 2 Worksheet Reflection on Solutions to the Urban Heat Island Effect

G OAL Understand how the following phenomena contribute to the Urban Heat Island Effect: Sun light Black body properties of materials 3 heat transfer mechanisms (conduction, convection, radiation) Come up with solutions to mitigate the Urban Heat Island Effect

R EVIEW OF H EAT T RANSFER M ECHANISMS Conduction: heat is transferred by direct contact between objects Convection: heat is transferred in a fluid (liquid or gas) Radiation: heat is transferred in the form of electromagnetic waves Remember: Heat is always transferred from HOT to COLD!!!

U RBAN H EAT I SLAND (UHI) A urban heat island is a metropolitan area that is at a warmer temperature than the surrounding countryside Around 2 to 10 o F (2-6 o C) Not only air is hotter, but different surfaces are hotter.

C AUSES OF UHI Presence of dark and dry surfaces High heat (sunlight) absorption Examples: pavement, asphalt, buildings Absence of vegetation Shade blocks solar radiation Plants sweat water, and heat is removed (40 gallons a day)

C ONSEQUENCES UHI More air conditioning (1-1.5 gigawatts) More electricity, more emission of GHG More smog More health problems Eye irritation, lung damage, asthma Vegetation issues

L OS A NGELES UHI I Increase of annual urban temperatures over the last decade in several UHIs

L OS A NGELES UHI II Increase in LA temperatures as a result of urbanization and industrialization

L OS A NGELES UHI III Increase in electricity use in LA. 2% increase for every 1 o F increase in temperature

L OS A NGELES UHI IV Higher temperatures means more ozone or smog will be produce