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 'P' Click on    to hear the word and definition. Click on the picture to see a bigger picture. Some are animations. paleontologist a scientist who studies things that lived long ago  A paleontologist finds and studies fossils. phase a change in the Moon's shape as we see it from Earth  We see phases of the Moon because we see different parts of its lit side. physical change to change the size or shape of matter  Cutting food is a physical change. pitch how high or how low a sound is  A xylophone goes from a high pitch to a low pitch. planet Earth is a planet that moves around the Sun.  Earth is sometimes called the blue planet. poles where a magnet's pull is strongest  A magnet has two poles. pollen the powder inside a flower that can make seeds grow  The bee carries the pollen from flower to flower. pollution harmful things in the air, water, or land  Pollution happens when air, water, or land get dirty. pond a small body of fresh water  The bird lives in a pond. position the place where something is  The cat's position is inside the box. Leave Glossary