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When the asteroid reaches its aphelion distance, it is moving at its __________ speed.

You see the left edge of your favorite constellation, Betelgeuse at your zenith.  The right edge of Betelgeuse traverses all the way down to your western horizon.  What is the angular extent of Betelgeuse in arcseconds? 

Match the following lunar phases with the best description. Each option will only be used exactly one time. Partial credit is possible.  

Let’s say you could see all naked eye planets visible at the same time.  How splendid indeed!  Which planet would be closest to your horizon?

Within the mollusks, only the cephalopods have a

Which arthropod transmits a disease that causes about a million human deaths per year?

Ecdysozoans _______________

The specialized feeding structures found in horseshoe crabs and arachnids are called

Birds differ from more primitive vertebrates by

The vertebrate fish group that is thought to be ancestral to the tetrapods is __________________.