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yr 7 sci revision
sem two topics
| Term | Definition |
|---|---|
| newtons | derived unit of force |
| Balanced forces | two forces acting in opposite directions on an object |
| Gravity | the force that attracts two bodies toward each other |
| Friction | the resistance to motion of one object moving relative to another |
| spring balance | spring balance is a type of mechanical force gauge |
| weight | the weight of an object is related to the force acting on the object |
| mass | both a property of a physical body and a measure of its resistance to acceleration |
| spring tide | This tide usually adds only a couple of inches to normal tides. |
| earths rotation | the rotation of Planet Earth around its own axis. |
| bouyancy | a force that acts in water and pushes objects upward. |
| solar eclipse | a portion of the Earth is engulfed in a shadow cast by the Moon |
| static electricity | an imbalance of electric charges within or on the surface of a material. |
| heliocentric model | the universe with the sun in the center |
| geocentric model | the Universe with Earth at the center |
| planet order | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto |
| mitochondria | double-membrane-bound organelle found in most Eukaryotic organisms |
| cell wall | structural layer surrounding some types of cells |
| microscope | an instrument used to see objects that are too small to be seen by the naked eye |
| probe | sent away from earth to observe things |
Created by:
Jbelcher
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