P1 - 1.1 Energy Stores + Systems Flashcards
What is the law surrounding energy
Energy is never created or destroyed only ever transferred between different forms and objects
True or False:
Energy is never created or destroyed only ever transferred between different forms and objects
True
True or False:
Energy is never created but can be destroyed only ever transferred between different forms and objects
False
What is it called where we store energy
Energy store
What is thermal energy
Heat energy trapped in an object or temperature
What is kinetic energy
Energy that involves movement or motion
What is gravitational potential energy
Where energy is positioned in a gravitational field
What is elastic energy
Energy held in an already- stretched string
Where is chemical energy held
In chemical bonds
What type of energy occasionally gives you an electric shock when you touch your car
Electrostatic energy
What is magnetic energy
Energy that holds magnets
What is nuclear energy
Energy created from breaking atoms apart
What are the 8 main types of energy stores
Thermal
Kinetic
Nuclear
Gravitational potential
Electrostatic
Elastic
Magnetic
Chemical
True or False:
Energy is fixed in an object
False energy can be transferred
What term do we use to describe the movement of energy
Transferred
What 4 ways can we transfer energy
Mechanically
Heating
Electrically
Radiation
What 2 types of radiation can we use to transfer energy
Light
Sound
What term do we use to describe an object or group of objects
System
What happens when a system changes
Energy is transferred
What 2 ways can energy change in a system
To a new object
To a new state
In an open system how can energy move
It can transfer into and out to the outside world
Energy is either lost or gain depending on how it interacts with the outside world
What is an open system
When energy can be lost or gained by interacting with the outside world
In what type of system is energy separated from the outside world
Close system
In what type of system can energy interact with the outside world
Open system
What do we mean by the outside world
Everything outside the system
How does energy change in a closed system
It doesnt - no matter or energy can enter or leave a closed system
In what type of system is the overall change always zero
Closed system
Describe how energy is transferred in a kettle from a plug
Electrical energy from the plug is transferred to the kettles heating system which turns into thermal energy which transfers to the kettles water thermal energy store
It is transferred electrically
What are the 2 types of work done
Mechanical
Electrical
What is another way of saying energy is transferred
Work done
How does mechanical work done work
Requires a physical force to move an object like kicking a football with your foot
What are the 2 energy stores involved when you kick a football
Chemical energy store in leg is transferred to the kinetic energy store if the football
What type of work done happens when you kick a football with your foot
Mechanical
What is electrical work done
Requires a flowing current
How can we think of electrical work done
The energy it requires to overcome the resistance in a wire
Image a train is about to go over a broken bridge and needs to stop:
What is created when a train breaks
Friction
What causes friction in this scenario:
Image a train is about to go over a broken bridge and needs to stop
The breaks against the wheels and train track
Image a train is about to go over a broken bridge and needs to stop:
What part of this scenario causes “does work”
The friction of the breaks against the wheels and train track
What energy store is in the wheels of this scenario:
Image a train is about to go over a broken bridge and needs to stop
Kinetic energy
Image a train is about to go over a broken bridge and needs to stop:
What are the energy transfers in this scenario
Kinetic energy in the wheels is transferred to thermal energy into the surroundings
What type of energy store does a battery have
Chemical energy
