Amplify your students’ understanding of wave motion with this captivating demonstration! Using simple materials, students can have significant influence on large-scale variables of frequency, amplitude and wave speed as they observe wave motion through a medium.
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In September 2015, scientists witnessed something never seen before: two black holes colliding. Both about 30 times as big as our Sun, they had been orbiting each other for millions of years. Continue reading
After sight, hearing is the most important of our five senses. Sound is caused by waves, and sounds are made by vibrating objects. Sounds can vary in two ways: amplitude and pitch. The amplitude of a wave tells us how much energy was used to produce it. The greater the amplitude, the greater the volume. Frequency is the number of waves or vibrations sent out in a specified amount of time; the faster something vibrates, the higher the pitch.