♥✿ Experimental Design ✿♥
A. What is the scientific method?The scientific method is a process for experimentation that is used to explore observations and answer questions. Scientists use the scientific method to search for cause and effect relationships in nature. In other words, they design an experiment so that changes to one item cause something else to vary in a predictable way.
definition source> Image Source> |
B. Reference LinksC. Scientific Method StepsThe steps of the scientific method helps one answer hypotheses about an unknown question.
D. Practicing the scientific methodI explored 1) graphing, 2) identifying variables and selecting one to test, 3) developing hypotheses according to the experiment I did, 4-5) designing a experimental procedure, 6) predicting expected results if the hypotheses was true, with a partner.
|
E. Experimental DataPart 1: I was given data to make a graph, below. I used a Google spreadsheet to create a graph and I saved my image file to upload here. My graph demonstrates an inverse relationship between concentration of ethylene, mL/m^2 and time of maturation, Days because it was observed that as concentration of ethylene, mL/m^2 increases, time of maturation, days decreases. This is be due to the effects of ethylene which is known to be released by plants naturally which causes plants to grow.
|
F. VariablesPart 2: Potential environmental variables to consider.
G. HypothesisPart 3: I selected weather as my variable from a list of environmental variables I developed with a partner. I believe that weather may affect the growth of a variety of apple trees because I have observed plants grown in very cold weather and I have seen that they do not grow as fast as plants grown in warm weather. The results I would expect, if my hypothesis is correct, is that apple trees grown in cold weather will grow slower than apple trees grown in ideal weather conditions as measured by the height of the tree.
Dependent Variable: Height of the Tree Independent Variable: Weather H. Control GroupsPart 4: It is important to control variables in an experiment because...
Control Group: A group of apple trees in a greenhouse (ideal weather). Experimental Group/s:
|
I. Experimental DesignPart 5: Experimental Procedure
|
J. Expected ResultsPart 6: The results I would expect, if my hypothesis is correct is that apples grown in extreme weather conditions will grow slower than apple trees grown in ideal weather conditions because I've seen that apples don't grow fast in cold weather and in ideal weather conditions they do grow faster, as measured by the height of the tree.
|