Energy Flashcards
What is an energy transfer and name an example.
energy transfer is the movement of energy from one system to a norther. Example: A car driver braking in an emergency - kinetic energy is transferred into thermal energy
What is the law of energy conservation?
That Energycan be transferred or usefully, stored but it cannot be created or destroyed.
What kind of energy store is energy transferred to when you compress a spring?
Elastic potential energy
Name all nine energy stores.
Magnetic, kinetic, heat (thermal), gravitational, electrostatic, chemical, elastic, electrical, nuclear
Name all four energy pathways.
Mechanical, electrical, heating and radiation.
How can you reduce unwanted energy transfers in a machine with moving, touching components?
Use lubricants (like oil)
Kinetic, Elastic, Gravitational, Chemical, thermal.
Car, Slingshot, paragliding, Rocket, fire
kinetic, Elastic, Gravitational, Chemical, thermal
How long can energy remain in the same store?
From a fraction of a second to millions of years.
What does it mean if an energy resource is renewable?
Renewable energy resources can be replenished.
