Temperature Kim Lachler Updated 2015 NCES: 6.P.2. & 3.

transcript

TemperatureTemperature

Kim Lachler

Updated 2015

NCES: 6.P.2. & 3

Heat_and_Temperature.mov

Measure of average kinetic energy of Measure of average kinetic energy of the particles in a objectthe particles in a object

Particles of objects move randomly and at Particles of objects move randomly and at different speeds, thus, temperature is an different speeds, thus, temperature is an averageaverage

The more kinetic energy the particles of an The more kinetic energy the particles of an object has, the higher the temperature the object has, the higher the temperature the object will be.object will be.

How a Thermometer How a Thermometer WorksWorks

11stst

many thermometers are a thin glass tube filled with many thermometers are a thin glass tube filled with liquidliquid mercurymercury alcoholalcohol

22ndnd

Thermal expansion or Thermal expansion or thermal contraction thermal contraction takes placetakes place

As temperature increases As temperature increases the liquid expands the liquid expands

As temperature As temperature decreases the liquid decreases the liquid shrinksshrinks

33rdrd

Scales where Scales where etched out on the etched out on the glass tube to read glass tube to read the temperaturethe temperature

Common scalesCommon scales

Fahrenheit Fahrenheit CelsiusCelsius KelvinKelvin

Water boilsWater boils 212212˚̊ 100100˚̊ 373373

Body temp.Body temp. 98.698.6˚̊ 3737˚̊ 310310

Nice DayNice Day 6868˚̊ 2020˚̊ 293293

Water freezesWater freezes 3232˚̊ 00˚̊ 273273

Common scalesCommon scales

Absolute Zero – temperature at which no more Absolute Zero – temperature at which no more energy can be removed from a substanceenergy can be removed from a substance

0 Kelvin = -273 Celsius0 Kelvin = -273 Celsius

Temperature vs. amount Temperature vs. amount of heat.of heat.

Which beaker has the higher temperature if both are at room temperature?

They are at the same temperature. They are both at room temperature.

Which beaker has the most heat?

The 500 ml beaker. It has more volume.

The amount of heat is determined by both the temperature and the amount of the substance present.

It also takes more energy to heat the 500 ml beaker then the 300 ml beaker to the same temperature.

Conductors vs. InsulatorsConductors vs. Insulators

Some materials transfer energy better Some materials transfer energy better than othersthan others

ConductorsConductors transfer energy; heat and electricity quicklytransfer energy; heat and electricity quickly

MetalsMetals WaterWater

InsulatorsInsulators

Insulation.mov Insulators- transfer energy; heat and electricity slowlyInsulators- transfer energy; heat and electricity slowly

airair fiberglassfiberglass

BibliographyBibliography

Fotosearch,Temperature Stock, http://www.fotosearch.com/photos-images/temperature.html, accessed Fotosearch,Temperature Stock, http://www.fotosearch.com/photos-images/temperature.html, accessed 12/29/201012/29/2010

Google imagesGoogle images

Temperature Kim Lachler Updated 2015 NCES: 6.P.2. & 3.

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