4. What happens when waves collide? Both at the point of collision and more importantly, after the collision. This works better in the sim, so don't panic if you can't "see" what happens in real life. Maybe if you record on your phone, and play it back slowly, you can see. If 2 waves with crests on the same side collide? For example, do the waves bounce off each other, or pass right through? How do you know? What happens to the amplitude? If 2 waves with crests on opposite sides collide? Once you have formed an opinion, test it - For instance, what should happen when a compression wave collides with a transverse wave? This should remove all doubt about bouncing vs. passing through. Write down your prediction and why you think it should be so, then test it. Explain with CER format