| The molten rock below the Earth's surface is called ____. |
contour line |
| Circles of latitude are parallel to the ____ on a globe. |
darkness |
| A mineral's ____can be transparent, translucent, or opaque. |
equator |
| A ____ (isoline) joins points of equal elevation (height). |
greenhouse |
| At the Tropic of Cancer the Sun is at the zenith at ____ on 6/21. |
magma |
| December 21 has the most hours of ____ in the U.S. |
noon |
| The Moon's ____ around the Earth causes moon phases. |
revolution |
| Carbon dioxide, methane, and nitrous oxide are ____ gases. |
transparency |
