Most cameras use lenses rather than a pinhole. This involves…

Most cameras use lenses rather than a pinhole. This involves some trade-offs. Name one ‘pro’ and one ‘con’ of using a lens. Pros (benefits of using a lens over a pinhole): (answer in Blank # 1) Cons (drawbacks or added challenges of using a lens compared to a pinhole): (answer in Blank # 2)

You are walking along a rugged coastline in British Columbia…

You are walking along a rugged coastline in British Columbia, Canada. As the tide goes out you realize there is a beautiful flat surface that is nearly as smooth as a highway and underlain by 1-2cm of gravel sitting on solid rock. The tide has exposed a ________.