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Science revision
Semester two topics
Term | Definition |
---|---|
Newtons | The unit of measurement for forces |
Balanced Force | Where the forces that are acting in pairs are equivalent and keep the object in the same direction. (basically the forces cancel each other out) |
Solar Eclipse | When the moon is between the sun and Earth and causes there to be no light from the sun hitting a part of the Earth. |
Gravity | The downwards pull of all things to all objects that have mass. |
Contact Force | Where a force that is acting upon an object is physically touching it. |
Friction | The resistance that a surface or object experiences when moved over another. |
Spring Balance | The tool used to measure forces. |
Weight | Weight is mass times gravity. |
Mass | The amount of matter that's in an object. |
Spring Tide | When both the sun and moon are on the same side of Earth and create a further gravitational pull on the Earth hydrosphere. |
Earths rotation | The Earth has a complete rotation around its axis over 24 hours. |
Probe | A spacecraft that is sent to space to collect information and often orbit other planets. |
Telescope | A tool used to see far-away objects. |
Buoyancy | A force that acts in water and pushes objects upward. |
Static Electricity | Static electricity is the build up of an electrical charge on the surface of an object. |
Heliocentric Model | The model of our solar system where all plants, moons ect orbit the sun. |
Geocentric Model | The model of our solar system where all planets, moons ect orbit Earth. |
Planet Order | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Pluto |
Mitochandria | The part of most cells where respiration and energy production occurs. |
Cell Wall | The wall around a plant cell to give the cell strength and structure. |
Microscope | A tool used to view very small objects. |