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Details Title: Astronomy Book Vocabulary Description: Chapter 1/Section 2 Total Flash Cards: 10 Created: 06/13/2005 12:07:10	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term phase Definition one of the different shapes of the moon as seen from Earth Term eclipse Definition the partial or total blocking of one object by another Term solar eclipse Definition the blocking of sunlight to Earth that occurs when the moon is between the sun and Earth Term umbra Definition the darkest part of a shadow Term penumbra Definition the part of a shadow surrounding the darkest part Term lunar eclipse Definition the blocking of sunlight to the moon that occurs when Earth is directly between the sun and moon Term tide Definition the rise and fall of the level of water in the ocean Term gravity Definition the attractive force between two objects; its magnitude depends on their masses and the distance between them Term spring tide Definition a tide with the greatest difference between low and high tides Term neap tide Definition a tide with the least difference between low and high tides