engleză
In the Heat leveled reader, fundamental science facts in chemistry are explained through easily understood text and colorful photographs and illustrations. Young readers discover that heat is a form of energy. (The terms energy, work, force, and speed are defined). The movement of atoms and molecules creates heat energy, and the faster atoms and molecules move, the more heat is released. (Atoms and molecules are defined.) Ice cubes are cold because the water molecules are moving slowly. As the molecules move faster, the water gets warmer and the ice melts. When molecules move even faster, the water becomes steam. The faster molecules move, the more energy they have. Humans and animals need heat energy to stay alive.
A pronunciation guide of scientific terms is included. 24 pages with colorful photographs and illustrations. Reading Level 1-3, Interest Level 2-5. Word Count 255. Lexile measure 520L.
