HVAC(R) Chapter 4 practice retake questions

a Ton of refrigeration effect is defined as the _____

Amount of heat energy absorbed when a ton of ice melts during one 24- hour day

______ is the method by which heat is transferd from one substance to another through a circulating medium, such as air or water.

Convection

The ________ of a substance is the amount of heat added or released to change the temperature of 1 lb other substance by 1 degree Fahrenheit or 1 kg of the substance by 1K.

Latent heat content

Temperatures measured on the _____ scale can be converted to Fahrenheit temperatures by subtracting 460 Degrees Fahrenheit.

Rankine

the weight of a substance is defined as the ______

force of gravity on the substance

Relative density is defined as the ratio of the mass of a certain volume of a gas as compared to the mass of a n equal volume of hydrogen. Knowing this concept and that density is mass per volume, a heavy gas would then have a relative density _____

greater than 1

if a substance has a specific gravity less than 1.0, it means that the substance is less dense than water

less dense than water