February’s Science Experiments

We scratched a ruler at a point 13″ from our ears, once with the ruler 1″ away and once with the ruler 12″ away. We found that we could hear the sound better when carried through the ruler than through the air.
febsci1

We clicked two rocks against each other in and out of water. We found that the clicking sound was louder under the water.
febsci2

We hung Cheerios from a hanger and plucked a rubber band near them. The cereal moved due to the vibrations moving through the air.
febsci3

We used a piece of rope to demonstrate transverse waves.
febsci4

We struck a fork on the table and listened to the sound it made.
febsci5

We whispered into different lengths of straws to hear how the sounds changed based on length.
febsci6

We felt the sides of our throats while humming to feel the vibrations our bodies make when we talk.
febsci7

We listened to the sound a rope makes when plucked.
febsci8

We put music on very loud and held a balloon near the speaker. The vibrations coming from the speaker made the balloon vibrate, too.
febsci9

We clapped our hands gently and then vigorously and observed how the sound we made was different.
febsci10

We made a megaphone with a piece of construction paper. We could direct our voices in whatever direction we pointed it.
febsci11

We put different amounts of water in soda bottles and blew across the tops to see what different sounds were made.
febsci12

Cameron blew across the top of an empty soda bottle while the little guys held up matching bottles to their ears to see if they could hear a sound that would indicate the bottles were in resonance.
febsci13

We cut a spiral and balanced it on a pencil.
febsci14

We put clay in a half eggshell and stuck a straw into the clay and threaded an index card on the straw. We could push the straw over, but it would always balance to being upright again.
febsci15

We used paperclips to balance a “parrot” on a hanger.
febsci16

We balanced critters on a tightrope by using pennies to properly weight them.
febsci17

We used Warheads and toothpicks to make geometric shapes.
febsci18

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