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Science is fun and scientific experiments are great way to introduce your kids to the world of science. There are plenty of easy yet interesting experiments that can be performed at home. Here are 3 easy science projects for kids.
1) Fog Formation
To form the fog artificially
- Two soda bottles with wide neck
- Two cube of ice about size of bottle neck
- Cold and hot water
- Empty the bottles and rinse them with clean water
- Fill the first bottle with cold water (about ¼) and place an ice cube on its neck so that the bottle is sealed tightly.
- Fill the second bottle with same amount of hot water and seal its neck with ice cube in similar manner.
As the time passes, fog is started to form in one of the two bottles. Fog is formed in the bottle with hot water whereas the bottle with cold water remains intact. This is due to the physical phenomena of difference in temperatures. Due to the hot water in bottle the temperature of gas in bottle rises and its particles moves upward. But when they come in contact with ice, temperature of gas particles falls and they chance into small water droplets resulting in fog. This experiment involves change in phase i.e gas to liquid and hence covered under chemistry.
2) Demonstrate Capillary Action in Plants
This is a colorful experiment to demonstrate how plant draws water for survival.
- Six stalks of celery or vegetable stem
- Knife and a cutting board
- Six glasses
- A vegetable peeler
Note: all parts requiring a knife, and cutting should be done by an adult or under adult supervision.
- Make sure all the pieces of celery are of equal length and long enough to completely fit into the glass. Chop the top and bottom of leafy part so only stalks are left.
- Fill all six glasses equally with clean water.
- Now add ten drops of red food color to 3 glasses and blue color to other three left.
- Place one celery into each glass so that you have exactly six glasses with three blue and three green color.
- After two hours remove one celery from both blue and red glasses and peal them carefully. Continue this process at regular interval of 2 hours and note down the observations.
As we peel stalk, a slight change in color is observed. Celery dipped in red color shows red color and blue shows light blue color. However with time the depth of color increases. This experiment shows that plants need water to survive same as any other life form does. Plants get water through their roots and the capillaries allow water to travel throughout the plant. Capillaries have a hollow structure and function as straw; this can be proved from above experiment. The above experiment deals with study of life forms and hence covered under biology.
3) An Easy Homemade Lava Lamp
This activity will have you creating your own lava lamp to demonstrate the effect of salt on oil
- Tap water
- Vegetable oil
- Different food colors i.e. red, blue, green etc.
- Large glass of water
- Fill about 2/3 of the glass with clean water.
- Pour oil into the glass, you will see oil floating over the water.
- Add drops of different food coloring, more the better.
- Sprinkle 1 spoon of salt slowly into the water.
Amazing color patterns are seen; colorful droplets rise above the bottom of cup similar to the lava. This is due to the fact that salt is soluble in water but oil do not dissolve. When salt is added it takes some droplets of oil with it to the bottom of glass but once the salt dissolves completely these droplets of oil moves upward giving the effect of lava. This experiment is based on densities between water and oil and hence covered under physics.