How Predator and Prey Animals Hear
Materials: A phone or speaker, pencil, paper, a partner
A predator will often hear a prey animal before it sees it.
Their ears are well adapted to hear noises far away to help them hunt.
Prey animals need sharp hearing to prevent predators from sneaking up on them, too.
Step 1: Use a phone or speaker to play music at "outdoor voice" volume. Walk away from the sound.
Step 2: Write down every 5 steps whether or not you can still hear the music.
Walk until you cannot hear it, and write down how many steps you are away from the speaker.
Step 3: Restart the experiment, but have your helper change one factor about the sound.
The factor can be the direction or height of the speaker or obstacles in between you and the speaker.
Walk until you cannot hear it, and write down how many steps you are away from the speaker.
Step 4: Compare if the number of steps are the same, less, or more between each trial.
Bonus Challenge: Some animals can hear by feeling vibrations with their tongues (like snakes) or with whiskers (like coyotes).
Play a song with a lot of bass (meaning it shakes the ground) and walk until you cannot feel the vibrations in the ground anymore.