Unit 1: Heat, Temperature, and Pressure

Under standard conditions, water freezes at

0 degrees Celsius

One British thermal unit will raise the temperature of

1 pound of water 1 degree Farenheit

List four types of temperature scales

Fahrenheit, Celsius, Kelvin, Rankine

Describe how heat is transferred by radiation

Transfer of heat through the air or space.

(lab 8)Sensible heat energy levels

can be measured with a thermometer.

(lab 6)When heat transfers by convection, it

is transported from one place to another by air or liquid.

(lab 5)When heat transfers by conduction, it

moves from molecule to molecule.

(lab 7)When heat transfers by radiation, it

moves through space and air and heats solid objects.

Molecular motion stops at

-460 degrees Fahrenheit

Convert 80 degrees Fahrenheit to Celsius.

26.7 degrees Celsius

(lab 10)The atmosphere will support a column of mercury ___ inches at sea level.

29.92

Atmospheric pressure at sea level under standard conditions is ___ inches of mercury or ___ pounds per square inch absolute. (psia)

29.92 in. Hg or 14.696 (psia)

(lab 3)If water weighs 8.34 pounds per gallon, it will take _____ BTU to raise the temperature of 4 gallons of water from 70 degrees Fahrenheit to 72 degrees Fahrenheit.

66.7

Convert 22 degrees Celsius to Fahrenheit.

71.6 degrees Fahrenheit

An increase in sensible heat causes

A higher thermometer reading

(lab 2) At standard conditions on the Celsius scale, water will boil at

At standard conditions on the Celsius scale, water will boil at

To change from psig to psia, you must add ____ to psig.

Atmospheric pressure

State the standard conditions for water to boil at 212 degrees Farenheit

Earth's atmosphere exerts a weight or pressure of 14.696 psi at sea level.

In what direction does heat flow

From a warm substance to a cold substance

Describe heat transfer by conduction

Heat transfer through energy from one molecule to another.

Describe how heat is transferred by convection

Moving of heat in a fluid from one place to another.

Specific heat is the amount of heat necessary to raise the temperature of 1 pound of a

Substance

Temperature is defined as

The level of heat

(lab 4)True or False. Heat flows from a warmer substance to a cooler substance.

True

Latent heat causes

a change of state

(lab 1) The standard atmospheric conditions for water to boil at 212 degrees Fahrenheit are:

atmospheric pressure: 14.696 psi, temperature: 70 degrees Fahrenheit.

(lab 9)Latent heat energy levels

result in a change of state of the substance