1. Bodies that radiate light are called   opaque   non-luminous   luminous   Hint Half-n-half Clue   2. Materials through which light cannot pass are said to be   translucent   transparent   opaque   Half-n-half Clue   3. The solar eclipse occurs more frequently than the lunar eclipse.   True   False   4. Materials that allow light to pass but through which objects cannot be clearly seen are said to be   translucent   opaque   transparent   Half-n-half Clue   5. The partly lighted area of a shadow on the periphery of the totally shaded portion is called the _______   umbra   penumbra   eclipse   Half-n-half Clue   6. Light from the sun takes about _______ minutes to reach the earth.   six   four   eight   Half-n-half Clue   7. _______ is a type of solar eclipse where the moon's shadow covers the sun's center and has a ring of sunlight around it.   A lunar eclipse   A helical eclipse   An annular eclipse   Half-n-half Clue