“HEAT”

• Heat is a form of energy that flows from warmer bodies to colder bodies.

• It is viewed as a form of energy that is transferred from one body to another due to a difference in temperature.

• The SI unit of heat is joule (J).

• Common unit of heat is calorie.

• CALORIE the amount of heat needed to change the temperature of one gram of water from the pressure of the atmosphere.

TEMPERATURE

LAYMAN’S TERM- It is the degree of hotness or coldness of an object.

Molecular level- A measure of the average kinetic energy of these molecules.

Based from our sensory experiences:

“Can we use our senses to determine temperature?”

THERMOMETER- a device that

measures temperature

TYPES OF THERMOMETER

The most common type of the thermometer.

THERMOCOUPLE-two different metals (usually copper and iron) that are twisted together

INFRARED THERMOGRAMS-a device (camera) that measures the amount of radiant energy given off by an object

TEMPERATURE SCALES

TEMPERATURE SCALES

CELSIUS(Andres Celsius)

FAHRENHEIT (Daniel Gabriel

Fahrenheit)

KELVIN (William

Thompson / Lord Kelvin)

RANKINE (William Rankine)

°C = 5/9 ( °F – 32)

°F = 9/5 ( °C + 32)

K = °C + 273 °R = °F + 459.67°