matter, Occupies space and has mass , humidity, the present of water vapour _________, temperature, the higher the ________ of the surroundings, water conservation, using water very carefully, kaleidoscope, an optical device consisting of a tube, condensation, the process of water changes to liquid state from gaseous state, desalination, to obtain fresh water, Boiling point, temperature for liquid changes to gaseous, water vapour, water in gaseous state, exposed surface area, the larger or bigger the ___________, gaseous to liquid, Condensation, solid to gaseous, sublimation, melting point, temperature of solid to liquid, steam, water vapour in boiling process, seventy percent, the amount of water in earth, Hidden position, Periscope used to observe things from, Reflected light, we can see the objects because they, Cloud seedling, to make rainfall, adequate rainfall, Cloud seedling is to ensure dry areas to get, silver iodide , a chemical for cloud seedling.

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