Show:
Miscellaneous
Obtaining Water Quality
Bottled and Tap
Calculating Density
Water and Climate
100
What is water?

H20

100
Name one factor that affects water quality.

Golf courses, factories, home gardeners, farmers, etc.

100
What does bottled water come in?
Bottles.
100
What is the equation for density?
Density = Mass/Volume
100
What is the difference between weather and climate?
Weather is temporary while climate is the average weather of a region.
200
Is water wet?
Yes.
200
Name an illness people can get from water.
Beaver Fever etc.
200
What is the word for the bacteria in water that makes people ill and kills people?
E. coli
200

A 2.0 mL sample of oil has a mass of 1.76 g. What is its density?

D = m / v

    = 1.76 g / 2.0 mL 

    = 0.88 g/mL

200
What is the moderating effect?
The circulation of air over land and water, due to the heat capacity of water, and to prevent dramatic temperature changes.
300
What percentage of the human body is water?
anywhere between 45-65 percent is an acceptable answer
300
What are the three types of contaminants of water?

Biological

Chemical

Physical

300
Name four impurities other than E. coli which affect water.

rust, dirt, arsenic, lead, manganese etc.

300
If the density of an object is 86.33 g/ml and the volume is 24.28 ml then what is the mass?
2096.0924
300
Why do regions nearer to water experience more rain?

As air travels across the water, it picks up a large amount of moisture (water vapour)

400
How long can the average human survive without water?
3-4 days
400
Which organism is responsible for the spread of Beaver Fever, and is it filtered out at a water filtration plant?

Giardia, and yes.

400
What is the byproduct of chlorine which causes cancer?
THMs
400
There are two sponges. Sponge one has a mass of 0.374 grams and a density of 0.153 grams/ml. Sponge two has a mass of 0.552 grams and a density of 0.24 grams/ml. What is the difference between sponge two and sponge one's volume.

    _                                                                       2.4 - 

400
What is the heat capacity of water?

4.186 joules/gram degree C

500

What is the molar mass of water?

18.01528 g/mol

500
What is the number of people who die each year due to dirty water?
3.4 million
500
What was the Walkerton incident, and when did it take place?
An outbreak of E. coli from 2000.
500
What is the Archimedes Principle?

The buoyant force on an object is equal to the weight of the fluid displaced (pushed out of place) by the object

If the weight of the fluid displaced weighs as much as the object itself, the object will float


500
What are the exact percentages of the water versus land in the northern and southern hemispheres?

Northern hemisphere - 39% land, 61% ocean

Southern hemisphere - 19% land, 81% ocean