theme park science second form V2 Flashcards
(27 cards)
What is the law of conservation of energy
Energy doesn’t appear or disappear. Energy can be transferred between different stores of energy.
Where would energy be stored when a football is at maximum hight falling
Gravitational / gravitational potential
Where would energy be stored of a football when it is mid fall
Half gravitational / gravitation potential and half kinetic
Where would energy be stored of a football at lowest point just before impact
It would be all in kinetic
Kinetic energy store
Moving objects have energy in their kinetic store
Gravitational energy store
Objects gain energy in their gravitational potential store when they are lifted above the ground
Elastic energy store
Objects have energy in their elastic potential store if they are stretched
Electrostatic energy store
Objects with charge (like electrons and protons) interacting with one another have energy in their electrostatic store
Magnetic energy store
Magnetic interacting with each other have energy in their magnetic store
Chemical energy store
Objects with energy in their chemical store can release energy in chemical reactions
Nuclear energy store
Atomic nuclei release energy from their nuclear store during nuclear reactions
Thermal energy store
All objects have energy in their thermal store the hotter the object the more energy it has in its store
What are the energy transfer pathways
Mechanical
Electrical
Heating
Radiation
Mechanical transfer
Energy is transferred mechanically when a force is used to move an object a certain distance. This is called the work done by the force.
Electrical transfer
Energy is transferred electrically when a charge flows around a circuit. This is also described as the work done when an electrical current flows.
Heating transfer
Energy is transferred by heating when there is a temperature difference, so energy flows from a hotter area to a colder area. It can transfer by conduction or convection
What does it mean for energy to be dissipated
This is where energy is wasted by being transferred out to the surroundings.
How do you find speed
Distance / time . Distance over time. Or V = d/t
On a distance time graph what axis would distance be on
The Y axis
On a distance time graph what axis would time be on
The X axis
On a distance time graph if the line goes down what does this mean
They are returning to their original point
On a distance time graph if the line is going straight across what does this mean
That they are not moving / taking a break
On a distance time graph if the line is a straight diagonal line what does this mean
It is a steady increasing speed
On a distance time graph if the line is curving upwards
The speed is accelerating
