Difference between revisions of "Scientific Law"
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===Examples=== | ===Examples=== | ||
| − | : [[Newton's First Law]]: | + | : [[Newton's First Law]]: An [[object]] in motion will tend to stay in motion in a straight line and an [[object]] at rest will tend to stay at rest unless an [[Unbalanced Forces|unbalanced force]] acts upon it. |
| − | : [[Newton's Second Law]]: | + | : [[Newton's Second Law]]: Force = Mass x Acceleration, which means the [[acceleration]] of an [[object]] is [[Directly Proportional|directly proportional]] to the [[Resultant Force|resultant force]] acting upon it. |
| − | : [[Newton's Third Law]]: | + | : [[Newton's Third Law]]: For every [[Action Force|action force]] there is a [[Reaction Force|reaction force]] with an equal [[magnitude]] but acting in the opposite direction. |
| − | : [[Hooke's Law]]: | + | : [[Hooke's Law]]: The [[extension]] of an [[elastic]] [[object]] [[Directly Proportional|directly proportional]] to the [[force]] applied to the [[object]]. |
| − | : [[Ohm's Law]]: | + | : [[Ohm's Law]]: The [[Electrical Current|current]] through a [[Electrical Resistor|resistor]] at constant [[temperature]] is [[Directly Proportional|directly proportional]] to the [[Potential Difference|potential difference]] across the [[resistor]]. |
| − | : [[Conservation of Energy|The Law of Conservation of Energy]]: | + | : [[Conservation of Energy|The Law of Conservation of Energy]]: Energy cannot be created or destroyed it can only be transferred from one store into another. |
Revision as of 21:04, 21 March 2019
Key Stage 4
Meaning
A Scientific Law is a description of how certain events take place in the Universe.
About Scientific Laws
- Scientific Laws are true everywhere in the Universe.
- Scientific Laws do not explain any cause and effect relationship.
Examples
- Newton's First Law: An object in motion will tend to stay in motion in a straight line and an object at rest will tend to stay at rest unless an unbalanced force acts upon it.
- Newton's Second Law: Force = Mass x Acceleration, which means the acceleration of an object is directly proportional to the resultant force acting upon it.
- Newton's Third Law: For every action force there is a reaction force with an equal magnitude but acting in the opposite direction.
- Hooke's Law: The extension of an elastic object directly proportional to the force applied to the object.
- Ohm's Law: The current through a resistor at constant temperature is directly proportional to the potential difference across the resistor.
- The Law of Conservation of Energy: Energy cannot be created or destroyed it can only be transferred from one store into another.