linear, superficial and volumetric expansion

Question 1

define the coefficient of linear expansion

Answer 1

The amount by which unit length of a substance
expands when its temperature is raised by one
degree
The temperature scale must
be stated. Thus we can say that the coefficient of
linear expansion of a solid is the fractional
increase in length of unit length when its temperature
is raised by one degree Celsius

Question 2

formula for increase in length

Answer 2

increase =original length x coefficient of linear exp x temp rise

gives INCREASE may have to add to original length if question asks new length

Question 3

symbol for coefficient of linear expansion

Answer 3

For steel, the coefficient of linear expansion (denoted

by the Greek letter a

Question 4

define coefficient of superficial expansion

Answer 4

superficial (or area) expansion of a solid

Question 5

define volumetric expansion

Answer 5

cubical expansion of a liquid

Question 6

superficial and volumetric expansion are what in relation to linear

Answer 6

superficial X 2 linear

volumetric X 3 linear

Question 7

examples where volumetric expansion is used

Answer 7

sprinkler heads

thermometers

Question 8

example of use of linear expansion

Answer 8

bi metallic strip

thermostats