1-Define "water cycle".
2-When water changes from a liquid to a gas, it is called________________________.
3- Water can exist as each of the three states of matter: ___________________, ___________________, and ____________________.
4-The earth has a limited amount of water. True / False
5-People perspire (sweat) and plants ______________________.
6-Water vapor in the air gets cold and changes back into liquid, forming clouds.This is called __________________________.
7-Rain, hail, sleet or snow is considered ______________________________.
8-What fraction of the earth’s water is fresh?
9-What percentage of all the Earth’s water is in a form that is useable to humans and land animals?
10-Why is evaporated water so clean?
11-Condensation is the opposite of ____________.
12-Condensation occurs when a ____________ is changed into a __________.
13-When the ________________ and ___________________ are right, the small droplets of water in clouds form larger droplets and precipitation occurs.
14-What factor is most important in determining whether water is a solid, liquid, or gas?



This page was created by Antonia using Web Poster Wizard.