What is the operating principle of glass stem thermometers?
A) The fluid inside the thermometer boils as it is heated, causing the liquid level to rise.
B) The fluid climbs the walls of the tube through capillary attraction, which works better at higher temperatures.
C) The refractive properties of the glass stem change with temperature, making the fluid level appear higher at higher temperatures.
D) Expansion and contraction of the fluid makes the liquid level rise and fall with temperature.
D
You might also like to view...
It is important to do which of the following when conductors are fed into long runs of conduit?
a. Fill the conduit with lubricant. b. Hold tension on the spools so that excess wire does not spill onto the floor. c. Make sure the wires are straight and do not cross over each other. d. Put back-tension on the conductors to prevent kinking.
With Rocky Mountain spotted fever, early diagnosis and treatment with ____________________ is important
Fill in the blank(s) with correct word
Because of their huge numbers and direct access to soil organic matter, free living microorganisms such as Azotobacter typically fix more nitrogen per hectare of land than do nitrogen-fixing bacteria living in plant roots
Indicate whether the statement is true or false
The sequence of construction operations on a project involving a single general contract is usually established by the:
A. general contractor. B. union. C. sub-contractor. D. Inspector. E. Construction Management firm