A scientist puts a bell inside a sealed glass jar. She makes the bell vibrate. Then, she sucks all the air out of the jar with a vacuum pump. She makes the bell vibrate again. Describe what the scientist probably heard when she made the bell vibrate each time. Explain your answer. Let’s Experiment
The highness or lowness of a sound is known as the pitch. Pitch
High Pitch A high pitch has a high frequency. It has many ‘peaks’ in the wave.
A low pitch has a low frequency. It has few ‘peaks’ in the wave. To learn more about pitch click hereclick here Low Pitch
Science and Technology > 3.1.4.C.1 Identify Observable Patterns Science and Technology > 3.2.4.B.1 Recognize observable descriptors from each of the five senses Science and Technology > 3.4.4.C.1 Identify characteristics of sound For more on the PA Standards click hereclick here Pennsylvania State Standards