Life of a Permanent marker

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Presentation transcript:

Life of a Permanent marker

Are permanent markers really permanent? Question Are permanent markers really permanent?

Purpose The purpose of my investigation is to determine if a permanent marker is really permanent. This is important to know because if you were buying a permanent marker you would want to know if the marker was really worth the money.

Hypothesis I hypothesize that the sharpie won`t be as permanent as you would think. I believe this because the sharpie can come off your hands and sometimes the walls with special stuff.

Procedure

Materials Detergent Scissors 15 5 cm x 5 cm fabric squares 1 marker (a - Sharpie) 1 marker (b - Caliber) 1 marker (c- Office Depot) Dryer Washer

Variable Manipulate: Brand of markers Responding: Percentage of ink left on the fabric Constant: size of fabric, type ,(Purex),and amount of detergent, method of washing and drying, method of marking fabric

Directions 1. Gather materials 2. Cut 15 5cm X 5cm fabric squares 3. Draw a letter A on one fabric square using brand A marker. 4. Draw a letter B on one fabric square using brand B marker. 5. Draw a letter C on one fabric square using brand C marker. 6. Place fabric squares A, B, and C in the washing machine. Add Purex detergent and wash. When finished, place in dryer to dry. 7. Using the rating scale 1 to 5, rate each square for the amount of ink still remaining with 1 being nothing remaining and 5 being all ink remaining. Record score for each square. 8. Repeat steps 3 ~7 for 4 more trials. 9. Caculate the average score for each brand of marker.

Rating Scale: 1 = no ink remaining 5 = all ink remaining Data CHART INK REMOVAL RATE BRAND TRIAL 1 TRIAL 2 TRIAL 3 TRIAL 4 TRIAL 5 AVERAGE Sharpie 5 4 4.4 Caliber 3 2 2.8 Office Depot Rating Scale: 1 = no ink remaining 5 = all ink remaining

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CONCLUSION My hypothesis was correct. Permanent markers are not fully permanent. The Sharpie left an average of 4.4 on the fabric, based on the rating scale of 1 being no ink remaining and 5 being all ink remaining. The Caliber brand marker left 2.8 on the fabric. The Office Depot brand left 2.8 on the fabric as well. If I had to do this again I would use a pink or blue marker to see if my results would change.