Posted 09-02-2002 at 20:31:13
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7th Period Biology Honors
September 2, 2002
There are over 1,000,000 different known species of insects living on Earth. One of the most common insects found in people's yards and gardens eating away at their plants is the short-horned grasshopper also known as a locust. They may be hard to catch because of their camoflauged body color within their surrondings and their quick speed of flight. Many people wonder about how they live and move about. A question people wonder about is if different colors effect the grasshoppers movement.
There are so many possible outcomes for this experiment, but for the hypothesis we said that the grasshopper would move more on the green construction paper, because it's the color of its natural enviroment. It would feel more comfortable and free in its natural enviroment. Well, the grasshopper has 5 eyes to sense around with. They have 3 small single eyes and 2 large (compound) eyes, which has thousands of little eyes. With these eyes they can see backwards, forewards, and sideways. They can also sense movement and light around itself.
To put together the experiment we needed some supplies. We got gathered a shoe box with its lid, 6 different colors of construction paper, 1 roll of saran wrap, a stop watch, 1 short-horned grasshopper, and a roll of tape. To keep the grasshopper inside the box without letting it escape, but also being able to view its every move, we covered the lid with saran wrap and taped it down on the lid. For the box we cut out 6 different colors of construction paper then laid inside the box a single sheet of colored construction paper. The six different colors were: green, orange, white, purple, yellow, and blue Then we placed the grasshopper inside the shoe box and put the lid on top. We then started the stop watch and viewed its amount of movement during 60 seconds on each color. The results were then recorded. The experiment was carried out 5 more times for the 5 other colors.
The control variable of the experiment was the grasshopper we used, which was the same throughout the experiment. The independent variable are the different sheets of colored contruction paper. The dependent variable is how much/far the grasshopper moved . The control group was when we let it sit in the box with no lid. The treatment group was when we changed the color for the bottom of the box.
After all the testing we concluded that our hypothesis was incorrect. The grasshopper did not have any change in movement towards the different colors. Our experiment also had some possible errors occur. We did not completely change the color of the box, only the bottom of it. So the grasshopper must not have sensed any change "around" it just under it. We only tested the colors once, because each color the grasshopper had little movement so we did not think that there would be any change in result. This experiment could have been done better with many changes. One change is to surrond the whole grasshopper with a color.