# System of Measurement

## System of Measurement

1- Briefly describe what systems of measurement are currently in use and what is the difference between them?

2- What information do we need to calculate the volume of a …

a) Cube; and

b) Cylinder.

QUESTION 3

What units we need to determine in order to calculate speed (velocity)?

QUESTION 4

Provide examples of consumer products with volume of 500 mL and 2 liters.

QUESTION 5

If you buy a 500 mL-bottle of soda and you finish it in regular class period of 50 minutes, what is the average flow rate of your soda drinking? Can you calculate it in liters?

QUESTION 6

Briefly explain what is concentration and what are the units of measurement. What units are used for very low concentrations?

QUESTION 7

What is the difference between gravimetric and volumetric concentrations?

QUESTION 8

If you have 10 pounds of apples (all uniform) and you measure that each apple weighs half pound, dividing the total weight of all apples by the weight of a single apple, what is the meaning of the number that you get?

QUESTION 9

List the content of air and roughly the corresponding proportions.

QUESTION 10

Explain your understanding of temperature and what is the effect of evaporation on the temperature, why do we like pool parties in hot summer days?

QUESTION 11

How wind speed affects the air pressure (Hint: Bernoulli’s principle)?

QUESTION 12

What do we mean by % relative humidity when reporting the weather conditions? Can we have 100% humidity and what does that mean?

QUESTION 13

List physical hazardous agents.

QUESTION 14

What is filtration? Explain briefly how it works. Give examples.

QUESTION 15

What is an ion? Give examples.

QUESTION 16

What is molecular polarization? Give examples.

QUESTION 17

What is sorption? Describe difference between absorption and adsorption.

QUESTION 18