| coal |
a hard black or dark brown substance that is found in the earth. People burn coal for heat and energy. |
| crystal |
a solid substance that has a repeating pattern of flat surfaces. |
| dangerous |
likely to cause harm; not safe. |
| each |
every one of two or more things. |
| flake |
a small, thin piece that has split off from or peeled off of a surface. |
| hint |
a sign or suggestion that is not made in a direct way. |
| nature |
the basic character and qualities of a person or thing. |
| scary |
causing fear; frightening. |
| strain |
to hurt or injure something by using it too much. |
| truck |
a large motor vehicle used for carrying heavy loads. |
| unit |
a single thing that is one of a group of similar things. |
| usual |
most common; normal. |
| visit |
to go or come to see. |
| walk |
to move your body by taking steps. |
| water |
the clear liquid that is in rain and that fills up rivers, lakes, and oceans. |