A Raindrop Is Doing Its Part to Form a Primary

question 27

Multiple Choice

A raindrop is doing its part to form a primary rainbow. Red and blue light enter near the top of the raindrop together from the sun. Both red and blue are reflected once at the back surface of the drop, but when the two rays emerge on the sunward side

• A) the blue ray lies below the yellow ray and is more nearly horizontal than the yellow ray.
• B) the red ray lies above the blue ray and is more nearly horizontal than the blue ray.
• C) the blue ray lies above the red ray and is more nearly horizontal than the red ray.
• D) none of these.

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Definitions:

Sebaceous Gland

A type of skin gland that produces sebum, an oily substance that helps to keep the skin and hair moisturized.

Sweat Gland

Small tubular structures of the skin that produce sweat, a fluid composed of water, minerals, and waste products.

Adhesion Belt

A cell structure composed of cadherin proteins that encircles a cell, promoting cell-cell adhesion and tissue integrity.

Intercalated Disks

Specialized cell-cell junctions in cardiac muscle that facilitate the synchronized contraction of the heart by allowing the rapid passage of ions and electrical impulses.