How are sounds made? How is sound volume measured? Explore decibels and levels of loudness.
1.
Think of as many objects and creatures that make sounds as you can. Use Crayola® Crayons to draw their pictures on index cards. Draw one item on each card.
2.
Combine your cards with classmates in a small group. Think of several ways to classify your pictures using different attributes (for example: country or city sounds; natural or created sounds; pleasing and harsh sounds). Sort your cards using one of these sets of attributes. Choose new categories and sort them again. Repeat until you have sorted them by all of your categories.
3.
Find out how scientists measure loudness. Share information about decibels and the equipment that measures them. If possible, measure the sounds of some of the items on your cards.
4.
Gather as a group again. Decide whether sounds of the items on your cards are soft, medium, or loud. Rank order the sounds from softest to loudest.
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