P3 - Conservation of Energy Flashcards
1
Q
explain how unwanted energy transfers could be reduced in the gear box
A
- using lubrication to reduce friction
2
Q
state what happens to the wasted energy
A
lost to surroundings / dissipated
3
Q
state two ways the use of coal can be harmful to the environment
A
- produces carbon monoxide
- produces air pollution
4
Q
state how energy is stored in a spinning flywheel
A
- kinetic energy
5
Q
says one way to increase the amounts of energy stored in the flywheel
A
- increase the speed of spinning
6
Q
which is a typical speed for a racing cyclist
A
C - 20
7
Q
state two non renewable energy sources
A
- oil
2. coal
8
Q
discuss the effects on the environment of 2 predicted changes
A
Change 1:
- biomass increases
Effect on environment :
-reduces greenhouse gases
Change 2:
-natural gas increases
Effect on the environment:
- contributes to global warming
