Science help, pleaseWatch
.The 2 types of mechanical waves are: longitudinal and transverse.
.The 2 types of progressive waves are: longitudinal and transverse.
^I don't get this, and while searching each question on the web I got the exact same answers.
Also basically mechanical waves need a medium, if so how are transverse waves a part of mechanical waves since they don't need a medium, (the electromagnetic waves can pass through a vacuum).
Could someone please explain this to me, I've been through 2 science textbooks and they don't explain clearly, one mentions about progressive waves and the other one doesn't.