Return to Book List   Glossary   Choose a Letter | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |   List of words for Letter 'C' Click on    to hear the word and definition. Click on the picture to see a bigger picture. Some are animations. chemical change a change in matter that makes new matter  When metal rusts, it is a chemical change. classify group things by how they are alike  You can classify these animals. clouds made from lots of tiny drops of water that are in the air  Rain or snow falls from clouds. communicate write, draw, or tell your ideas  The boy draws to communicate what he observes. compare observe how things are alike or different  The children compare the sponge and the ball. compass a tool with a magnetic needle that always points to Earth's North Pole  With a compass, you can figure out which direction you are facing. Condense to change into liquid  Cool air makes water vapor condense. constellation a group of stars that makes a picture  This constellation looks like a spoon. craters large holes on the surface of the Moon  Many Moon craters were made by rocks falling from space. Leave Glossary