Look-up History
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Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
| grass |
1 |
today |
a green plant with narrow pointed leaves and stems with joints. Grass often covers lawns and meadows. [2 definitions] |
Kids |
Ch. |
| behavior |
1 |
today |
the way a person acts or behaves. [2 definitions] |
Kids |
Ch. |
| conservation |
1 |
today |
the act of keeping and protecting from waste, loss, or destruction. [2 definitions] |
Kids |
Ch. |
| language |
1 |
today |
the system of spoken or written words with which people communicate thoughts, ideas, or feelings. [3 definitions] |
Kids |
Ch. |
| science |
1 |
today |
a system of studying, testing, and experimenting on things in nature. Science is a search for general laws about how the world works. [2 definitions] |
Kids |
Ch. |
| physics |
1 |
today |
(used with a singular verb) the science that deals with matter and energy, their qualities, and the relationships between them. Physics includes the study of light, heat, sound, electricity, and force. |
Kids |
Ch. |
| ecosystem |
1 |
today |
a community of living things, together with their environment. |
Kids |
Ch. |
| element |
1 |
today |
a part of any whole. [4 definitions] |
Kids |
Ch. |
| head |
1 |
today |
the top or leading part of an animal body. In vertebrates the head contains the brain, eyes, nose, ears, and mouth. In invertebrates, the head contains eyes, mouth parts, and other organs. [10 definitions] |
Kids |
Ch. |
| work |
1 |
today |
the use of energy or effort to achieve a result by doing or making something; labor. [10 definitions] |
Kids |
Ch. |