# Lab Report

Topics: Caffeine, Coffee, Seed Pages: 3 (700 words) Published: April 14, 2013
Problem: What caffeinated drink (monster, coffee, or green tea) will the radish seeds grow in the best form over a nine day period? Hypothesis: If the radish seeds put in the dish with the drink Monster, then the seeds will grow faster because of the amount of energy given to them. The amount of caffeine in Coffee is much greater than the amount in green tea and Monster, but neither coffee nor green tea contains any extra type of an energy booster like the Monster does. Design: This experiment has a manipulative variable of caffeinated drinks with the range set from the energy drink, Monster, regular Premium Dark Roast coffee, and finally unsweetened Green Tea. We set our control as something that the plant may usually get to drink, water. Throughout this experiment, we didn’t want to make the environment for the plant change, so as constants, we used the same temperature (70ºF), the exact same amount of light (about 10-11 hours), and we had the same amount of liquid for each set of seeds (5mL per day). Materials:

* 4 petri dishes
* 4 regular brand paper towels
* 20 seeds
* 60mL of Monster, Premium Dark Roast coffee, Green Tea, and water * 4 syringes
* Sharpie to label the petri dishes
* Ruler, paper, and pen for your observations
* Goggles and an apron are for safety, recommended but not required Procedure:
A: Manipulated Variable Procedure:
1. Label all petri dishes
2. Lay paper towels down on a flat surface
3. Put 5mL of each drink on a different paper towel
4. Fold the paper towels until they fit in the petri dish, and set each paper towel in a different dish. 5. Place 5 radish seeds in each petri dish on top of the towel 6. Fold the towel over the seeds and put the top of the petri dish on 7. Let all dishes sit in a place where they all get a constant amount of light, and the same temperature 8. Let sit for 24 hours, then come back and measure the length of the radish...