WATER

Possible Lab Questions

•What is the effect of ___ on ___ for example

•What is the effect of salinity (concentration of salt) on dissolved oxygen?

background•RESEARCH BOTH VARIABLES OF

YOUR HYPOTHESIS•INCLUDES DEFINITIONS, EXAMPLES

(MAY BE HISTORICAL), RELATED FACTORS THAT MAY HAVE AN EFFECT.

•BLACK INK OR TYPED•PARAGRAPHS

QUESTION & HYPOTHESIS

•QUESTION ASKS WHAT YOU WANT TO KNOW. INCLUDES INDEPENDENT & VARIABLE

•HYPOTHESIS IS A STATEMENT THAT IS TESTABLE

•INCLUDES AN INDEPENDENT AND DEPENDENT VARIABLE

•ANSWERS THE QUESTION

METHODS & MATERIALS

•NUMBERED STEP-BY-STEP DIRECTIONS HOW THE HYPOTHESIS IS TESTED.

•DOES NOT HAVE TO BE IN SENTENCE FORM, BUT MUST BE REPLICABLE BY ANYONE WANTING TO CONDUCT YOUR EXPERIMENT

DATA

•DATA TABLES AND GRAPHS WITH ALL NUMERICAL (QUANTITATIVE) MEASUREMENTS

•INCLUDE UNITS•ALL QUALITATIVE OBSERVATIONS

ANALYSIS•MATHEMATICAL INTERPRETATION

OF DATA. MAY INCLUDE. . .•MEAN, MEDIAN, MODE, RANGE,

STANDARD DEVIATION, % CHANGE, % DIFFERENCE . . .

•SHOW EXAMPLE OF WORK.

CONCLUSION•Support or reject your hypothesis•Justify above referring to specific data

and/or analysis•Explain sources of error and how they

most likely affected data. Usually includes variables that should have been constant. Does NOT include mistakes that you could fix.

•Relate to real-world example(s).

FRESHWATER - relatively pure with few dissolved salts

Lakes - Largest (by volume) Baikal in RussiaRivers - Amazon in South America

StreamsGroundwater (aquifers) - maybe Ogallala in

U.S.may be Great Artesian Basin in Australia

Glaciers - Lambert in AntarcticaRainwater

SoilAtmosphere

SELF INVENTORY

http://environment.nationalgeographic.com/environment/freshwater/water-footprint-calculator/?source=link_tw20110801env-water

Read FactsClick “Go”

Enter zip codeAnswer all questions to best of your ability. At the beginning of each section, view tips.

Make a data table for your home, diet, transportation, stuff and total compared to

national average.Graph data.

Click on each heading and manipulate the sliding scales. to see how changes affect your

total water uses.

•Calculate the percentage of your water uses compared to the national average (national - yours)/national *100. Positive answers means you are below the national average.

•Discuss any categories in which you exceed the national average.

•Discuss three things you could change that would result in the most reduction of your water usage

Virtual tour

AQUIFERSSOURCE OF ~50% U.S.

DRINKING WATERMOVEMENT THROUGH

PERMEABLE LAYERS IS A NATURAL CLEANING PROCESS THAT’S STRESSED

some definitions1.porous - (rock layers) having holes through that can hold water

2.permeable - pores are interconnected and allow water to pass through

water erosion & weathering

•Groundwater is a weak acid•Dissolves certain rocks

(limestone for example)•may form caves•if cave walls collapse,

forms a sink hole

RESIDENCE TIME Amount of time water

stays in a aquiferUsually very longAllows contaminants

to be stable underground