Chemical Change A change that produces one or more new substances and may release energy. Chemical Property A second set of properties in all kinds of matter. Circuit A path that is made from an electrical current. Claws A sharp, usually slender, and curved nail on the toe of an animal.
Originally, sandglasses were used as a measure for periods of time like the lamps or candles, but as clocks became more accurate they were used to calibrate sandglasses to measure specific periods of time, and to determine the duration of sermons, university lectures, and even periods of torture.
Amplitude is a measure of how big the wave is. 1  Imagine a wave in the ocean. 2  It could be a little ripple or a giant tsunami. 3  What you are actually seeing are waves with different amplitudes. 4  They might have the exact same frequency and wavelength, but the amplitudes of the waves can be very different.ince frequency and period are exact inverses of each other, there is a very basic pair of formulas you can use to calculate one if you know the otherâ¦. It is very easy to do these calculations on calculators using the x -1 button. Example 1: The period of a pendulum is 4.5s.