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Science Vocab
Vocabulary
| Term | Definition |
|---|---|
| Force | a push or pull |
| Gravity | attracts all objects toward each other |
| law of universal gravitation | states that every object in motion will stay at motion andany object at rest will stay at rest |
| mass | the amount of matter in an object |
| weight | the force of gravity on an object |
| inertia | the tendency of an object to resist a change in motion |
| newtons first law of motion | every object in the universal will attract each other |
| astronomy | the study of space |
| axis | the imaginary line that passes through the earths north and south poles |
| rotation | earth spinning on its axis |
| revolution | the movement of one object around another |
| orbit | the path of earth around the sun |
| calendar | a system of organizing time and dates |
| solstice | the day when the sun is right over the equator longest day of the year |
| equinox | night and day are equal |
| phases | different shapes of the moon |
| eclipse | moons shadow hits earths shadow |
| solar eclipse | when the moon passes directly between the moon and earths shadow during a full moon |
| umbra | the darkest part of the moons shadow |
| penumbra | the lighter part of the moons shadow |
| lunar eclipse | earth blocks sunlight from reaching the moon |
| tide | the moons gravity acting on different parts of the earth |
| spring tide | greatest difference between high and low tides |
| neap tides | least difference between the high and the low tide |