The picture models how a pencil looks in a glass of water. The pencil looks this way because light waves bend as they travel from the pencil to the observer. At what two locations in the picture do the light waves bend?

What is the length x of the side of the triangle below? (hint: use the cosine function)

Which of the following list the divisions of the geologic time scale in order from longest to shortest

Objects a and b are visible in the night sky. six months later they are still visible, but object b shows less parallax than object a. which object is closer? a. a b. b c. you would need to wait another six months in order to figure this out. d. you would need to know the objects' angular diameters in order to figure this out.