| A | B | 
| weather | short-term conditions of the atmosphere | 
| climate | long=term conditions of the atmosphere | 
| rotation | movement of the earth that causes day and night | 
| revolution | movement of the earth that, along with the tilt, causes seasons | 
| axis | titled 23 1/2 degrees | 
| equinox | when the sun is directly over the equator | 
| solstice | marks the beginning of summer and winter | 
| tropics | hot climates year round | 
| evaporation | change from a liquid to a gas | 
| condensation | change from a gas to a liquid | 
| monsoon | seasonal wind pattern | 
| Gulf Stream | warm ocean current | 
| nearness to ocean | moderates temperatures | 
| elevation | higher up means cooler temperature | 
| windward | mountainside facing the prevailing winds | 
| leeward | mountainside opposite the prevailing winds | 
| humid | moist | 
| arid | dry | 
| permafrost | permanently frozen subsoil | 
| orbit | path of the earth around the sun |