Scenario+1

Maggie's Plant Experiment

Maggie read that __some plants grow better if the soil is acidic__. She can't believe that a plant can grow when exposed to acid. Maggie decides to test if the plants she has will grow better when acid is added to the soil. __She puts potting soil in tow planting containers__ and __transplants two of her geraniums that seem about the same size into the pots__. She puts the pots in the same location so that they both get the __same sunlight each day__, are at the __same__ __temperature__ and she makes sure they get the __same amount of water__. However, Maggie puts a __tablespoon of vinegar__ __ * __ __in the water she gives to one of the plants__. She measures the growth of the plants __every week for five weeks__ and records the results in a data the table below: *NOTE: Vinegar is a weak acid
 * = Week ||= Height of Plants with Vinegar (cm) ||= Height of Plants without Vinegar (cm) ||
 * = 1 ||= 10.0 ||= 10.0 ||
 * = 2 ||= 12.4 ||= 11.5 ||
 * = 3 ||= 14.8 ||= 13.0 ||
 * = 4 ||= 18.0 ||= 15.7 ||
 * = 5 ||= 21.4 ||= 17.8 ||

Complete each of the following:
 * 1) Identify Maggie's hypothesis: when plants are exposed to acidic soil the plant will not grow taller
 * 2) Identify the independent variable: How much acid is in the soil.
 * 3) Identify the dependent variable: How much the plant grows.
 * 4) Identify the other variables Maggie needs to consider/control during this experiment: Amont of sunlight, amount of acid, amount of water, type of plant, more plants, type of acid, temperature of acid, temperature of enviroment, type of soil, if plant is in a pot or is it wild, how healthy the plant is, and weather conditions.
 * 5) Identify the control group in this experiment: Geraniums not getting the acid.
 * 6) Identify the experimental group: The geraniums recieving the acid.
 * 7) What conclusions might Maggie draw from this data? Acidic soil does help plants grow.
 * 8) What recommendations might you suggest for further study or for improvement? Use more Geraniums. Also test different plants to find out if it works for more plants.