Wave A is being decreased in temperature, and Wave B is moving from a liquid to a gas medium
6. Which statement can be made about both waves? (1 point)
They will speed up.
They will increase the density of their medium.
They will slow down.
They will decrease the density of their medium.

They will speed up, and decrease in density.

Explanation:

This is because, when water is heated, the molecules will spread apart, and bounce off each other. It gives them more space, and they are less tight packed, so it can move around freely.

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )