Germs Down the Drain

By

E. Keating

S. Wedel

P. Kindall

B. Collins

QuestionQuestion

Does the amount of time students Does the amount of time students wash their hands make a difference wash their hands make a difference in how clean their hands are?in how clean their hands are?

HypothesisHypothesis

Yes, our class thinks that Yes, our class thinks that people who wash their hands people who wash their hands longer have cleaner hands.longer have cleaner hands.

Materials NeededMaterials Needed

Glo GermGlo Germ Black lightBlack light Soap Soap WaterWater Dark roomDark room

Step-By-StepStep-By-Step

1) Apply 2 drops of Glo Germ to hands.1) Apply 2 drops of Glo Germ to hands.

2) Rub hands together. ( like lotion)2) Rub hands together. ( like lotion)

3) Wash hands with soap and water for 3) Wash hands with soap and water for 10 sec. 10 sec.

4) Use black light in dark room to 4) Use black light in dark room to evaluate how clean they are.evaluate how clean they are.

5) Rate hands on check list.5) Rate hands on check list.

Hand Washing ChecklistHand Washing Checklist

1.1. No orangeNo orange2.2. Little orange (around nails)Little orange (around nails)3.3. Partly orange (around nails between Partly orange (around nails between

fingers , or wrist)fingers , or wrist)4.4. Mostly orange (in creases and Mostly orange (in creases and

crevices, around nails between crevices, around nails between fingers and on wrist)fingers and on wrist)

5.5. Solid orangeSolid orange

Step-By-StepStep-By-Step

6) Repeat steps 1-5 except wash hands 6) Repeat steps 1-5 except wash hands for 45 sec.for 45 sec.

7) Compare and graph results.7) Compare and graph results.

ResultsResults

The people who washed their hands for 10 sec. didn’t get their hands all the way clean. The people who washed their hands for 45 sec. people got there hand a lot cleaner.

Hand Washing

0

1

2

3

4

5

6

1 2 3 4 5

Score

Nu

mb

er o

f S

tud

ents

Group 1

Group 2

Control and VariableControl and Variable

• Control-Washing your handsControl-Washing your hands

• Variable-the amount of timeVariable-the amount of time

ConclusionConclusion

Yes, our Hypothesis was right . No Yes, our Hypothesis was right . No one scored a 4-5 when washing one scored a 4-5 when washing hands for 45 sec.We learned that hands for 45 sec.We learned that even washing our own hands for 45 even washing our own hands for 45 seconds isn’t long enough. seconds isn’t long enough.