1. When light travels from warm (less dense) air into a region of colder (denser) air, its path will

1. When light travels from warm (less dense) air into a
region of colder (denser) air, its path will curve. Does it bend in the same
direction as Earth’s curvature or in the opposite direction?

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2. How is an inferior mirage different from a
superior mirage?

3. What term is used for the bending of light as it travels
through a transparent material that exhibits various densities?

4. Green flashes are most commonly photographed over the
ocean at sunset. Suggest a reason for this.