| bubble |
a ball of air or other gas inside another substance. |
| coal |
a hard black or dark brown substance that is found in the earth. People burn coal for heat and energy. |
| dam |
a wall built across a river or stream to stop the flow of water. |
| fever |
a body temperature higher than normal that is usually caused by illness. |
| glance |
a quick look. |
| grass |
a short green plant with narrow pointed leaves that usually covers fields and yards. |
| inn |
a small hotel for people who are travelling. |
| layer |
a covering of something that lies over a surface. |
| middle |
halfway between two things, places, or points. |
| nod |
to move the head up and down in order to greet or agree with someone. |
| runway |
a smooth, level strip on which airplanes take off and land. |
| soil1 |
the top layer of the earth's surface; dirt. |
| space |
the area that contains the entire universe beyond the earth. |
| stamp |
to push down against a surface with a hard fast motion. |
| usually |
ordinarily or most often; generally; typically. |