40 Vapour vay pohr Water that is in the gas state. Water molecules that have been evaporated.Vapour is usually invisible but hot steam can be seen for a few seconds before it disappears.
41 Dew (doo)Small droplets of water that appear on the ground in early morning. Dew can occur even with no clouds when humid air cools at night. Many small animals get the water they need from dew drops.
42 Convection currentAir movements caused by uneven heating of the Earth and temperature differences.Hot air rises, colder air sinks. The result is wind.
43 Aquifer (ah kwih fur)Big areas of underground water that can be found by drilling almost anyplace on Earth. This is also called the water table.
44 Drought (rhymes with out) An usually dry period with less than normal amounts of rainfall.
45 Flood (flahd)An usually wet period with more than normal amounts of rainfall when rivers can’t carry the runoff.
46 H2O H2 (2 hydrogen atoms) + O (1 oxygen atom) water The chemical formula for water.H2 (2 hydrogen atoms) O (1 oxygen atom)water( 1 water molecule)