Patterns And Realationships And Genitics Flashcards
(27 cards)
Speed
The distance travelled per unit until time is known as speed
Velocity
The distance an object travels per unit until time in a given direction
Acceleration
The change in velocity is known as the acceleration of a body
Acceleration unit
Ms-2. Or m/s2
Stationary
If something is not moving, a horizontal line is drawn on a distance-time graph
Time is increasing to the right, but its distance does not change. It is stationary.
Forces
Forces are what makes things move, like a push or pull
Non contact force
Gravity, magnetic force, electric force
Contact force
Friction, tension(pull), air resistance, applied force(push), spring force(twist)
Friction
Is the force that resists things rubbing against each other. It helps you to walk without sliding
Air resistance
It is the force that slows things down where they are moving
Buoyancy
Is the force that pushes things up in water
Mass
The mass of an object is the amount of matter that is in the object
Weight
The weight of an object is the force of gravity that acts on an object
Proportional relationship
Results will often show patterns. If you increase one variable- the other will increase or decrease in response.
Anomaly’s
Graphs that show results which do not follow a trend
Directly proportional
Results may increase proportional (by the same amount)
Graphs
Graphs are a good way to analyse results and discover patterns. They can show a general increase or decrease, a curve or a straight line
Elastic behaviour
If a material returns to its original size and shape when you remove the forces stretching or deforming it (reversible deformation) we say that the material is demonstrating elastic behaviour
A plastic or in elastic material
Is one that stays deformed after you have taken away the force. If deformation remains (irreversible deformations) after the forces are removed that is a sign of plastic behaviour
Hookes law
The amount a spring stretches is proportional to the amount of force applied to it
Genetics
The study of the inheritance of characteristics
Inheritable characteristics
Many physical characteristics such as eye colour and shape of ears were inherited from your parents
Chromosomes
The nucleus of each sex cell contains 23 thread like structures called chromosomes
Chromosomes are made of
Protein + DNA. These chromosomes carry genes
