Topic 3- Conservation Of Energy Flashcards
How can energy be stored ?
Energy can be stored in a system
What are the ways energy is stored ?
Kinetic store Gravitational potential store Chemical store Elastic potential store Nuclear store Internal store
What is kinetic store ?
The energy stored by an object’s movement
What is gravitational potential store ?
The energy stored in objects raised above the Earth’s surface.
This energy exists because of the Earth’s gravitational field.
What is chemical store ?
The energy stored by the chemical bonds between atoms.
What is elastic store ?
The energy stored when an object is being stretched, compressed or squashed.
What is nuclear store ?
The energy stored in the nucleus of an atom.
The energy in the nuclear store can be released by radioactive decay.
What is internal store ?
The internal store of energy is the sum of the kinetic energy stored in the particles of an object and the chemical energy stored in chemical bonds between particles in the object.
What is the temperature of the body(object) a measure of ?
the energy in the kinetic stores of its particles.
When increasing a body’s temperature what does this do to the kinetic store and internal store?
Increasing a body’s temperature increases the energy in the kinetic stores of the body’s particles, which means that the energy in the body’s internal store also increases
What property of an object is a measure of the energy in the kinetic stores of its particles?
Temperature
What is the equation of kinetic energy ?
KE = 1/2 x m x v^2
What is the kinetic energy of a rabbit of mass 3 kg travelling at 1 m/s ?
1.5 J
What is the equation for gravitational potential energy ?
GPE = m x g x change in hight
