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Transcript of exit project
Images from Shutterstock.com Myths about caffeine
Does caffeine stunt growth? Would it have the same effects on plants?
According to the coffeehousenuts.com and kidshealth.org Caffeine can make humans short but this is because caffeine can give you a disease causing a decrease of bone density and skeletal weakness. Also caffeine cuts down on your sleep because it gives you adrenaline and with the lack of sleep you become shorter.
These effects will most likely will not effect the plants because plants do not sleep. Hypothesis, Variables, and Materials Variables
(independent) Manipulated Variable: marjoram plant growth
(dependent) Responding Variable: length of plant
Controlled Variable: placement of plant bibliography "Caffeine: Is it dehydrating or not? - MayoClinic.com." Mayo Clinic. N.p., n.d. Web. 6 Dec. 2012. <http://www.mayoclinic.com/health/caffeinated-drinks/AN01661>.
"Does Coffee Make You Short? | The Coffee House Nuts." The Coffee House Nuts. N.p., n.d. Web. 6 Dec. 2012. <http://thecoffeehousenuts.com/does-coffee-make-you-short.html>.
"Does Coffee Stunt Your Growth? ." KidsHealth - the Web's most visited site about children's health. N.p., n.d. Web. 7 Dec. 2012. <http://kidshealth.org/teen/expert/nutrition/coffee.html>.
"Does coffee make you dehydrated ." Does coffee make you dehydrated . N.p., n.d. Web. 7 Dec. 2012. < coffee.wikia.com/wiki/coffee_myths>.
"Natural Health & Organic Living Blog." Global Healing Center Health Products & Information. N.p., n.d. Web. 6 Dec. 2012. <http://www.globalhealingcenter.com/natural-health>.
http://www.coffeedetective.com/does-coffee-affect-plant-growth.html The effect of caffeine on plants Exit Project presentation My exit project tests if caffeine can work as a fertilizer. I test this by using two marjoram plants and I water these plants daily. One plant is watered with caffeinated water and the other with tap water. Procedure
Put 250 ml of soil into each 2 medium size container
Plant Marjoram seeds in each container and bury it in the soil.
Label the first container tap water then label the second pot caffeine
Crush a caffeine pill and wait for it to dissolve completely in in water
Use a measuring cup to water the plants exactly 20 ml each day. Water the plant labeled caffeine with caffeinated water and water the plant labeled tap water with tap water. Hypothesis: if caffeinated water is used on marjoram plants then the plant will grow faster. I think this because www.globalhealingcenter.com/natural-health says that the caffeine will loosen the soil and the caffeine will work as a pesticide. Materials: Two marjoram plants, two containers, tape or labels, caffeinated water, tap water, measuring cup ruler, marker, and soil tape/label measuring cup marker data for first experiment Data table for experiment one:
day 1: 12/26: water:0 cm caffeine: 0
day 2: 12/27: water:0 caffeine: 0
day 3: 12/28: water:0 caffeine: 0
day 4: 12/29: water:0 caffeine: 0
day 5:12/30: water:0 caffeine: 0
day 6: 12/31: water:0 caffeine: 0
day 7: 1/1: water:0 caffeine:
day 8: 1/2: water:0 caffeine 0
day 9: 1/3: water:0 caffeine:0
day 10: 1/4: water:0 caffeine:1/4
day 11: 1/5: water:1/4 cm caffeine: 1/2 cm
day 12: 1/6: water:1/2 caffeine: 3/4
day 13:1/7: water 3/4 caffeine 1
day 14: 1/8 : water: 1 caffeine 1.25
day 15: 1/9: water: 1.25 caffeine 11/2
day 16: 1/10: water: 1.50 caffeine 13/4
day 17:1/11 water 1 .75 caffeine 2 Graph data for second experiment Conclusion Pictures Data set 2
day 1: Feb 9: 0 cm 0 cm
day 2: Feb 10: 0 cm 0 cm
day 3: Feb 11: 0 cm 0 cm
day 4: Feb 12: 0 cm 0 cm
day 5: Feb 13: 0 cm 0 cm
day 6: Feb 14: 0 cm 0 cm
day 7: Feb 15: 0 cm 0 cm
day 8: Feb 16: 0 cm 0 cm
day 9: Feb 17: .5 cm .2 cm
day 10: Feb 18: .7 cm .5 cm
day 11: Feb 19 1 cm. 1 cm
day 12: Feb 20: 1.3 cm 1.5 cm
day 13: Feb 21: 1.5 cm 1.8 cm
day 14: Feb 22: 1.7cm 2 cm
day 15: Feb 23: 2.3cm 2.5 cm
day 16: Feb 24: 2.7cm 2.9cm
day 17: Feb 25: 3 cm 3.4 cm 64tefv3etvgdy2ecyfegwetgfttefgwtefgwe ry3 23hr2 yg 23ywey2y23 3ggy3 2ge fg2egywdu b rebge dhgf df dfdfhgfdhgfhdgfhdfhvdhv hdf vfbhfv bvbhvbdfhbsbv dfh ufdhuherigreireh In the exit project I conducted, I tested to see if caffeinated water could work as a fertilizer to plants. I tested this hypothesis by watering one marjoram plant with caffeinated water, and watering another marjoram plant with tap water, and then measuring the height of the plants each day. According to the data I collected, the plant watered with caffeine grew faster. For example, in experiment one, the marjoram plant watered with caffeine was .25 centimeters taller than the marjoram plant watered with tap water. In experiment two, the plant watered with caffeine was .4 centimeters taller than the plant watered with tap water. According to http://www.coffeedetective.com/does-coffee-affect-plant-growth.html the caffeinated water made the marjoram plant grow faster because caffeine is high in nitrogen, an element essential to plant growth, and a major ingredient in commercial fertilizer. This proves my hypothesis is correct that the plant with caffeine would grow faster.
One error occurred at the beginning of the experiment. I buried the seeds too deep in the soil container labeled “tap water” so I resolved this problem by putting the seeds at the same depth as in the container labeled “caffeine”.
This experiment connects to the real world because farmers could use caffeinated water as a fertilizer. http://www.globalhealingcenter.com/natural-health/are-coffee-grounds-good-for-plants/ states that caffeine can also be a pesticide against bugs. This is good for farmers because they could just add caffeine to their crops and they will have a pesticide and a fertilizer
An idea for further studies is to test if tap water affects the growth of a plant. I would test this by watering a marjoram plant with tap water and watering another marjoram plant with rainwater and comparing the height of the two plants.