14 bowl of water
STUFF YOU ’ LL NEED : highlighters bubble solution black light
Have a parent help you open the highlighter pen . Pull out the felt and place it in a small amount of water . Let it soak for a few minutes and then discard the felt . Add a small amount of bubble solution to the bowl . Your mixture should be half highlighter water and half bubble solution .
canning jars with lids |
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STUFF YOU ’ LL NEED :
water in a spray bottle
bread , cheese , apple cut into one-inch cubes
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The phosphorescent chemicals in the highlighter ink are made visible by the ultraviolet in a black light . |
Turn on your black light and blow bubbles . Describe what happens : |
THE EXPERIMENT 1 . Spray each piece of food with a little water .
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Place each piece of food in a separate jar , screw on the lid and write the food type and date on the top .
Place the jars in different locations — in sunlight , a dark place ( inside a paper bag would work ), a cool place ( in your refrigerator ) and one in a warm place .
Examine the jars everyday , observe the changes and record how quickly food gets moldy .
Unlike plants , molds don ’ t grow from seeds . They grow from spores that float in the air . These spores multiply on damp food and the chemical they produce will make the food rot .
Don ’ t open your jars as more spores are forming and could be released into the air . Molds can make people sick .
Standards Link : Science Investigation : Conduct simple experiments .
Official Kids Mag www . kidscoop . com © Vicki Whiting October 2024