PURPOSE
The purpose of this experiment was to determine which automobile anti-freeze is most biologically safe.
I became interested in this idea when I was reading information on the Internet and saw that anti-freeze is often harmful to plants, animals, and humans.
The information gained from this experiment will benefit society by proving what brand of anti-freeze is the safest for our environment.
HYPOTHESIS
My hypothesis is that recycled anti-freeze will affect the grass the least out of all the anti-freezes chosen for this experiment.
I base my hypothesis on a quote from "Cool As News’" (recycled anti-freeze) website (www.coolasnew.com) that "Recycled anti-freeze ensures adherence to environmental laws and regulations which creates a good relationship and reputation with regulatory agencies and the community."
EXPERIMENT DESIGN * The constants in this study were: * The type of grass, the amount of soil * The amount of water given to each area of grass * The amount and temperature of anti-freeze distributed to each area of grass * Growing Conditions
The manipulated variable was the type of anti-freeze used for each area of grass in the experiment.
The responding variable was the height of the grass after experimenting for 24 days.
To measure the responding variable I used a meter stick and measured the height of the 4 intersections of string and then averaged the 4 to find the mean height.
MATERIALS
QUANTITY |
ITEM DESCRIPTION | 1 | 200 ml. Water | 4 | 100 ml. Water | 54 | 40 Sprays Water Bottles | 5 | 9 1/2 x 14 x 5-cm. Pans | 5 | 250 ml. Grass Seeds | 5 | Spray Bottles | 1 | 100. Recycled Anti-freeze | 1 | 100 ml. Havoline Extended Life Anti-freeze | 1 | 100 ml. Prestone Anti-freeze | 1 | 100 ml. Turbo Power Anti-freeze | 5 | 4-cm. Potting Soil | 5 | 1/4-cm. Peat Moss | 4 | 29-cm. pieces of yarn | 1 | 38-cm. pieces of yarn | 1 | Centimeter stick | | |
Cited: "Cool As New", [Online] Available http://www.coolasnew.com, Dec. 1999 "Grass", World Book Encyclopedia, 1999, Page 324 Kathleen C. Taylor, "Antifreeze", World Book Encyclopedia, 1999, Page 554 "The Grass Plant", World Book Encyclopedia, 1999, Page 324 "Soil", World Book Encyclopedia, 1999, Page 573 "Photosynthesis", World Book Encyclopedia, 1999, Page 430