Waves have the ability to show us many different types of things. Waves can show us pitch, length, depth, heat, and color for example.
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If the wave can be turned into an electrical signal then an oscilloscope can be used to look at the wave pattern.
Seismic waves affect us because they are what causes the motion from an earthquake that destroy buildings and such. The three types of seismic waves are surface waves primary waves also called P-waves and secondary waves also called S-waves.
The Transverse waves show up second in time, they are slower than the Primary Waves.
thermometer
electromagnetic waves
By a pen moving on a piece of paper to show the magnitude
The R and S waves on the EKG show how the heart is contracting and whether or not there is anything wrong with the beating of the heart or the structure of the heart.
Comparison of waves going through the solid inner core and those just skimming it can show the rotation of the inner core.
Waves allow us to communicate over long distances, transfer energy, and observe distant objects in space through technologies like radio, sound waves, and light waves. They play a significant role in various aspects of our daily lives, from wireless communication to medical imaging.
Earthquake waves travel faster in rocks that are more dense so observing them shows the density layering of the Earth. Also some waves can not pass through liquids and this shows us that there is a liquid core to the Earth.