Free Printable Worksheets by Subject and Grade from Worksheetzone

Letter A is: transpiration. Letter B is: evaporation. Letter C is: precipitation. Letter D is: run off. Letter E is: accumulation. Letter F is: condensation. A water molecule looks like _____: mickey mouse. What is the chemical formula for water: H2O. How many hydrogen atoms are in one molecule of water: 2. Which letter represents hydrogen: A. Which letter represents oxygen: B. Which letter represents the negative end: C. Which letter represents the positive end: D. Because water has a positive and a negative end, and is attracted to other molecules it is called a ______ molecule: . The property where water molecules are attracted to other water molecules: cohesion. The property where water can dissolve almost all substances on Earth: universal solvent. The property where water can pull itself up tubes or through spaces in paper or fabrics: capillary action. Why can some insects walk on water: The insect is too light to break the surface tension.. How does capillary action happen: ALL OF THESE REASONS

Which object can you see through clearly: Transparent. Which objects blocks all the light: opaque. Mike wants to put a window over his bathtub. Which type of material should he pick to allow light and privacy: translucent. Which object moves light to a central point: convex lens. Shining a light on a prism will______: compose many different colors. This object will magnify things close up: convex lens. This object will help you see things far away: concave lens. This object dips in like a bowl: concave lens. This object is thick in the middle: convex