Chapter 1 - Conservation and Dissipation of Energy Flashcards
State the 5 different types of energy stores. [5]
- GPE [1]
- EPE [1]
- Thermal Energy [1]
- KE [1]
- Chemical Energy [1]
What does the conservation of energy state? [1]
Energy cannot be created or destroyed, only transferred. [1]
Define the term ‘closed system’. [1]
- A group of objects where no energy transfer goes in or out of the objects. [1]
Describe what happens when a ball is falling from the sky. [2]
The GPE of the ball decreases [1]
and the KE of the ball increases [1]
State the equation which links force, distance, and work done. [1]
State the S.I unit of energy. [1]
W = F x D [1]
Joules [1]
State the equation that links mass, gfs, and height [1]
GPE = mgh [1]
State the equation that links speed, mass, and KE. [1]
KE = 1/2 x m x v(2) [1]
Define the 2 types of transferred energy. [2]
Useful energy - Transferred to the desired area. [1]
Wasted energy - Not usefully transferred. [1]
Where is the wasted energy from a light bulb transferred to? [2]
The surroundings [1] as heat [1].
