The diagrams below represent different ways heat can be transferred on Earth. The arrows in the diagrams show the direction of heat transfer. Which of the following shows the primary way heat is transferred in each diagram?

A)
Diagram X = conduction; Diagram Y= convection; Diagram Z = radiation

B)
Diagram X = convection; Diagram Y = radiation; Diagram Z = conduction

C)
Diagram X = convection; Diagram Y = conduction; Diagram Z = radiation

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.