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science exam revisio
semester 2 topics
| Question | Answer |
|---|---|
| newtons | The unit that force is measured in. |
| non contact force | The force which acts on an object without physically having to come in contact with the object |
| spring balance | the instrument in which we use to measure force(newtons) |
| weight | The force of gravity on the object. mass x gravity. |
| mass | The amount of matter that is in an object. mass never changes. |
| spring tide | A tide just after a full or new moon. |
| probe | a spacecraft that travels through space to collect data and scientific information to send back to scientists |
| luna eclipse | A lunar eclipse occurs when the sun and moon are in line but on opposite sides of the earth making the moon be in the shadows |
| static electricity | The imbalance of electric charges within or on the surface of a material. |
| buoyancy | The force that causes objects to float in water or some form of liquid. |
| planet order | mercury, Venus,earth, mars, Jupiter, Saturn, Uranus, Neptune, Pluto (all though we don't usually include Pluto as it is a dwarf planet. |
| mitochondria | produces energy, it is called the power house |
| cell wall | a structural layer surrounding some types of cells, just outside the cell membrane |
| microscope | we use microscopes to view cellular structures. |
| what causes the seasons | Seasons are caused by the 23.5 degree tilt of the earths axis away or towards the sun as it travels in orbit around the sun |
| friction | The resistance that one surface or object encounters when moving or rubbing against another. |
Created by:
tmales.12
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