energy transfers and stores Flashcards
4.2
when do objects have energy in their kinetic stores?
when they are moving
when do objects have energy in their gravitational stores?
when objects are raised through a gravitational field
when is energy transferred from the gravitational store?
when the object falls
when is energy transferred from the kinetic store?
when the object stops moving
when is energy transferred to or away from the chemical store?
when chemical reactions occur
when is energy transferred to or away from the elastic store?
when an object is stretched/ squashed
when is energy transferred from the elastic store?
when the object is released
when is energy transferred to the electrostatic store?
when charged particles are attracted/ repelled away from the object
when is energy transferred to the magnetic store?
when magnets are attracted/ repelled
when is energy transferred to the nuclear store?
when nuclei are split or fused
when is energy transferred to the thermal store?
when an object is heated
when is energy transferred away from the thermal store?
when an object is cooled
what do energy transfer pathways describe?
how energy is transferred from store to store
when is energy transferred mechanically?
when a force acts over a distance
mechanical work done =
energy transferred
when is energy transferred electrically?
when a charge flows around a circuit
electrical work done =
energy transferred
when is energy transferred via heating?
from hotter objects to cooler ones
energy is transferred by heating when particles transfer energy from a hotter object to a cooler one
what 2 categories are energy transfers spilt into?
working and heating
when is energy transferred by radiation?
when electromagnetic radiation transfers energy
