January 2012 Flashcards
1
Q
Why does evaporation lead to cooling?
A
- Evaporation.
- Higher kinetic energy.
- Reducing energy of particles left.
2
Q
Why should a reading be larger than 10N?
A
Mass of ruler, weight acts downwards.
3
Q
Why is a cooled balloon smaller?
A
- Particles move at lower speeds.
- Hitting sides less often.
- Reducing force.
- Pulls balloon into smaller size.
