| author |
a person who writes books, stories, plays, or other works. |
| bubble |
a ball of air or other gas inside another substance. |
| cliff |
a high, steep surface of rock. |
| coal |
a hard black or dark brown substance that is found in the earth. People burn coal for heat and energy. |
| damp |
wet, but not very wet. |
| exercise |
activity that improves the health of the body or mind. |
| fierce |
wild and dangerous. |
| form |
the shape or structure of something. |
| knock |
to hit a door in order to make noise. |
| load |
to put things on or in something in order to carry them. |
| painful |
causing discomfort in the body, as from an injury or illness. |
| science |
a careful method of studying and learning about things in nature. |
| shake |
to move back and forth or up and down with small and quick motions. |
| straight |
without a curve or bend. |
| threaten |
to say that you will harm or punish some person or group if something that you demand is not done. |