The Mom I Want to Be

 

Test the Strength of your hair.

Strand of hair
1 small plastic bag (sandwich or snack bags)
marbles
thread

Find someone with long hair and ask an adult to cut one or two hairs. Stick one end of a hair to a small plastic bag with tape and tie the other end around a pencil. Let the bag hang in the air and drop marbles in one by one.

It’s amazing to see how many marbles one hair will hold before it breaks.

Why it works: Hair is surprisingly strong. It is made from the same material as fingernails. Mammals need strong, tough hair for protection from the weather.

Repeat experiment using thread and compare how many marbles one hair can hold with how many a thread can hold.