You can see transverse waves by jerking a rope up and down, it will make an 'S' shape.
If you stretch out a slinky spring, you can push it forwards and backwards to create waves of compression, like longitudinal waves.
You can also see longitudinal waves in a ripple/wave tank.
You can use a variety of formula triangles to calculate the different aspects of waves, such as speed, frequency, wavelength, and more.
These can be used in different contexts and are important to learn and know.
Waves, when passing an edge or a gap, can be diffracted. This is when waves are bent as they pass the edge of an object, and then spread. The effect of diffraction varies depending on the ratio of the wavelength to the size of the gap.
If the gap is proportionally smaller, the diffraction effect will be more. The reverse is also true.
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