An Oil Layer That Is 5

question 21

Multiple Choice

An oil layer that is 5.0 cm thick is spread smoothly and evenly over the surface of water on a windless day.A light ray from the air above enters the oil at 45° with the normal and then goes into the water.What is the angle of refraction of this ray in the water? The index of refraction for the oil is 1.15,and for water it is 1.33.

• A)27°
• B)32°
• C)36°
• D)39°

Recognize and match different supergroups of life with their representative clades.

Distinguish between various supergroups and their evolutionary relationships with other organisms.

Identify and classify foraminiferans and understand their ecological role.

Understand the classifications within the archaeplastida supergroup, including the distinction between red and green algae.