Sunday, September 25, 2011

Cool experiments for a rainy day :)

Boredom buster coming your way!
Here are some cool science experiments to do with your family! I love every single one of them.You might have done some of these, but they are still allot of fun!



                                                                 Celery Experiment 
celery science experiment


  • Celery (with leaves)
  • Food coloring/die (preferably red, purple, or blue. Or do all three!)
  • Water
  • Glass

  1. Fill glass mostly full of water
  2. Put in a few drops of food die
  3. Cut off a piece of celery, about six inches long.
  4. Check every hour or so. 
  5. Note what happens

Plants absorb water through their roots through a process called osmosis. The water travels up tubes in the stems to all parts of the plants, and is used during photosynthesis to make food for the plant. When food coloring is added to the water, it travels with the water into the celery's stem and then into the leaves. Plants also absorb nutrients from the soil through the roots and up through the phloem in the plant's stems. The food coloring illustrates how nutrients are delivered to all parts of the plant.


                                                                  Floating Egg
                Will adding salt or sugar to water change whether an egg floats or sinks in it?

All you need for this experiment is...
  •  two eggs, 
  • two glasses, 
  • some sugar, 
  • some salt 
  • and a teaspoon. 

  1. Fill each glass half full with water and put an egg into each one. 
  2. Take the first glass, place an egg in it and record if the egg is floating or sinking
  3. Then add a teaspoon of salt. Did anything change? 
  4. Try adding a few more teaspoons of salt and record any changes after each spoonful. 
  5. Do the same with the second egg. First record whether it is floating or sinking
  6. Then add a teaspoon of sugar and see if that changes anything. 
  7. Record your results, and then try adding a few more spoonfuls. It is important to record any changes after each time you put in more salt or sugar.


                                                                    Crazy Colors!

 
        
 
  • Baking sheet or dish with flat bottom
  • Food coloring
  • Milk
  • Dish detergent

  1. Add milk to the baking sheet/dish until bottom is covered

  2. Add drops of food coloring  in the center of the milk

  3. Add a couple of drops of dish detergent to the glob of
    food coloring.

  4. Watch the colors explode!

What just happened here? OK... I will give you the educational part of this experiment (;

The dish detergent contains hydrophobic molecules, or more simply molecules that hate water.  When the detergent comes in contact with the water in the milk, it
quickly spreads out over the milk surface carrying the food coloring with it, so that the "water hating" part of the molecules can reach the air.




                                                     Fun With Gas
 
  • Balloons
  • Small funnel or a small piece of paper rolled up in a funnel shape
  • Baking soda
  • Vinegar
  • Small clean empty bottle

  1. Using the funnel, add 3 teaspoons of baking soda to each balloon.
  2. Fill each bottle 1/3 full with vinegar
  3. Without dropping in the baking soda, fit the balloon over the bottle opening
  4. Hold up the balloon and let the baking soda fall into the vinegar
  5. Watch as the baking soda mixes with the vinegar to make carbon dioxide gas and blow up the balloon

What happened?


The vinegar mixes with the baking soda to create a chemical reaction that produces carbon dioxide gas.  The gas then blows up the balloon.


Hope you had allot of fun trying out these experiments!


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