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Java Games: Flashcards, matching, concentration, and word search. |
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Visitors From Space
Practice vocabulary!
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| A | B |
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| force | power or energy |
| nucleus | the center of something |
| loops | moves in a circle or oval |
| particles | very tiny bits of anything |
| solar wind | a flow of gases or particles given off by the sun |
| fluorescent | describes something that gives off cool light |
| astronomer | scientist who studies the planets and stars |
| comet | a ball of frozen gases |
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