Cause & Effect Science Projects
When you boil an egg, you cause the inside of the egg to harden. Therefore, when you drop the egg on the ground, the resulting effect is that the eggshell may crack, but the insides will not splatter because they are now solid. This is cause and effect. Cause and effect science projects should be accomplished using the scientific method. The scientific method calls on you to research and develop a question that you want answered, hypothesize and predict what will happen, experiment and then analyze what happened and draw conclusions.
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Water and Salt
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Does salt added to boiling water increase the temperature of the water? This cause and effect experiment is for older students only with parental supervision. Pour 2 cups of water in a pan and bring the water to a boil on the stove. Insert a candy thermometer in the pan by attaching the candy thermometer to the side of the pan with the clip on the thermometer. Use the second hand of a watch and time 60 seconds, and then remove the candy thermometer from the pan using an oven mitt. Record the temperature reading of the water. Add 2 tablespoons of salt to the water and allow the water to boil for 1 minute. Then insert the candy thermometer into the water again, clipping the thermometer on the side of the pan. Use your watch to time 60 seconds, and then remove the thermometer from the pan using the oven mitt. Record the temperature of the water again. Finally, add another 2 tablespoons of salt to the water, wait 1 minute, insert the candy thermometer in the water, time it for 60 seconds, remove the thermometer and record the temperature. Compare your results.
Music and Plants
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Does music make a plant grow faster? Select two plants that are the same size, type and in the same type and size of container. Make sure both plants are healthy. Place each plant in a window that is exposed to full sunlight and water both plants with the same amount of water each day. The plants should be in different rooms. Measure the height of the plants. Once a day play music for only one of the plants for about 1 hour. Select any type of music you desire, such as rock, classical music or pop. Over a period of two weeks note any differences in each plant's growth.
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Oil and Water
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Do any household cleaners cause motor oil to separate from water? This experiment is intended for older students with adult supervision. Place three glass jars side by side on a table. Pour 1 cup of water in each jar. Then pour 1 teaspoon of motor oil in each jar. Note what happens as the oil mixes with the water. In one jar pour 1 teaspoon of pine cleaner and note any effect it has on the oil and water. In the next jar pour 1 teaspoon of window cleaner and note any effect the cleaner has on the oil and water. In the last jar pour 1 teaspoon of dish washing liquid and see what happens to the oil and water. Compare the results in each jar.
Rocks and Erosion
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Do different conditions cause some types of rocks to erode faster than others? Gather three different types of rocks, all the same size and in the same condition. Measure and weigh the rocks. Place each rock in 1 cup of water for 1 week. Each day remove the rocks from the water and examine them, weigh them and measure them. Note any changes in the rocks. After a week, dry the rocks thoroughly, then place each rock in a plastic bag and put them in a freezer for 1 week. Each day remove the rocks from the bags and weigh and measure them to see if there are any changes in the rocks. Allow the rocks to thaw, and then bury each rock in a glass jar containing 1 cup of dirt. Make sure that all of the dirt comes from the same location. Observe the rocks over the course of a week, measuring and weighing each rock daily and noting any changes.
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