Week 1 Flashcards
Value of Micro and its symbols?
One millionth
u
Value of milli and its symbol?
One thousandth
m
Value of centi and its symbol?
One hundreth
c
Value of kilo and its symbol?
One thousand
k
Value of Mega and its symbol?
One million
M
Value of Giga and its symbol?
One Billion
G
Value of nano and its symbol?
10)-9
n
What can temperature be defined as?
Temperature Scales
What are the 3 temperature scales?
-Celsius Scale
–Fahrenheit Scale
-Kelvin Scale
What is a temperature scale?
A temperature scale can be defined by a minimum of two fixed points,
where certain events take place, e.g. melting and boiling of a particular
material.
What is a fixed point for temperature scales?
At these temperatures, certain events such as melting and boiling of a particular material occur
What are the fixed points of temperature?
-Boiling point at 100 C
-The freezing point 0 C
-The triple point of water 0.01 C
-The absolute 0 point -273.15
What is the triple point of water?
The temperature at which pure ice, pure water and pure water vapour can exist together in equilibrium
What is the absolute 0 point?
The temperature at which the particle constituents of matter have minimal motion, which is
independent of the properties of any material
How to convert from Celsius to Kelvin?
Add 273.15
How to convert from Kelvin to Celsius?
Subtract 273.15
What is a centrigrade scale?
There are 100 equal parts between 2 fixed points
Experiment for measuring temperature?
Putting the sensor in melting ice and record the measured value as X0 as
the ice point (0°C) on the scale;
o then,
Put the sensor in boiling water and record the measured value as X100
as the steam point (100°C) on the scale
Draw a straight line between them 2
Draw a horizontal line for the temperature you want to measure
Use the equation: (Temp you want to measure - Temp 0/ Temp 100-Temp 0) x 100
What are the types of thernometers?
-Liquid in Glass thernometer
-Resistance Temperatures Detectors
-Thermocouples
-Constant Volume Gas thernometers
