Term
|
Definition
| Mass. Amount of substance. Temperature. Electric current. Brightness. Length. Time. |
|
|
Term
|
Definition
a mixture of fundamental quantities
F = m x a |
|
|
Term
|
Definition
| the measure of 'closeness' to the true or exact value |
|
|
Term
|
Definition
| a measure of similarities between results |
|
|
Term
|
Definition
| Have no identifiable cause. They tend to make results fluctuate inconsistently |
|
|
Term
|
Definition
| can be explained and tend to be uni-directional |
|
|
Term
| Name some systematic errors |
|
Definition
| Instrumental error. Zero error. Error due to change in conditions. Wrong use of instrument. Parallax error. |
|
|
Term
|
Definition
| observed value - accepted value |
|
|
Term
|
Definition
| absolute error ÷ accepted value x 100% |
|
|
Term
|
Definition
| can be projected onto a screen and they are inverted |
|
|
Term
|
Definition
| generally appear behind the mirror and are upright |
|
|
Term
|
Definition
| is the inability for a concave mirror to focus light to a single point. This occurs more commonly when mirrors are large or the opening for light is too broad. Spherical aborations result in fuzzy or blurred images |
|
|
Term
|
Definition
| is the bending of light rays as they move from one medium to another. Light rays bend towards the normal when they go from a less optically dense medium to a more optically dense medium. |
|
|
Term
|
Definition
| states that the refractive index for a material could be found by dividing the sign of the angle of incidence by the sign of the angle of refraction |
|
|
Term
|
Definition
| when white light is shined through an object and the colours separate due to the slightly different refractive index of each one, making them more visable |
|
|
Term
|
Definition
| the colour pattern that is formed due to dispersion |
|
|
Term
| Total Internal Reflection |
|
Definition
| is when the light rays bend towards the normal when you move from a less optically dense medium to a more dense medium. The opposite is also true. |
|
|
Term
|
Definition
| is when the angle of refraction is 90 degrees |
|
|
Term
|
Definition
| is the ability of the lens to refract light, using the unit dioptre D |
|
|
Term
|
Definition
| is the centre of the sphere that the lens forms a part of |
|
|
Term
|
Definition
| is the radius of the sphere from which the lens is said to form |
|
|
Term
|
Definition
| is the line joining the centre of curvature through the optical centre of the lens |
|
|
Term
|
Definition
| is the point where light rays which enter the lens parallel to each other converge on the other side of the lens |
|
|
Term
|
Definition
| have only magnitude (size) but no direction. |
|
|
Term
| Name some scalar quantities |
|
Definition
| Energy. Mass. Distance. Speed. Temperature. |
|
|
Term
|
Definition
| have both magnitude and direction. To show a quantity is a vector, sometimes they are written with an arrow, bar or wavey line above the representative letter. For example velocity ṽ. |
|
|
Term
|
Definition
| Objects that are at rest will remain at rest unless they are acted upon by an unbalanced outside force |
|
|
Term
|
Definition
| When a net force acts on an object it produces an acceleration that is proportional to the size of the force |
|
|
Term
|
Definition
| When one object exerts a force on a second object, then the second object exerts a force on the first object in the opposite direction |
|
|
Term
|
Definition
| Pushing. Pulling. Friction. Twisting. |
|
|
Term
|
Definition
| Magnetic. Gravitational. Electrostatic. |
|
|
Term
|
Definition
| is the force on an object due to the acceleration of gravity |
|
|
Term
|
Definition
| is the amount of matter present in a body. It is not density, size or weight. Mass is described by Netwon’s 1st law of motion and is related to the inertia of a body. |
|
|
Term
|
Definition
| is the pulling force that attracts onjects held above the Earth’s surface to the Earth’s centre |
|
|
Term
|
Definition
| is the constant speed that a freely falling object eventually reached when the resistance of the medium through which it is falling prevents further acceleration |
|
|
Term
|
Definition
| is the force that acts in a direction opposite to the oncoming flow of a velocity. For example: frictional force between an object and the medium through which it is moving --> air resistance and gravity. |
|
|
Term
| Complimentary angles in projectile motion have... |
|
Definition
| the same displacement (30degrees and 60 degrees) |
|
|
Term
| Vertical component in projectile equals.. |
|
Definition
|
|
Term
| Horizontal component in projectile equals.. |
|
Definition
| range (has constant velocity (a=0ms^2)) |
|
|
