Interactions (Y7) Flashcards
(8 cards)
1
Q
What reduces drag?
A
Streamlining.
2
Q
How does streamlining reduce drag?
A
By pushing the air particles out of the way.
3
Q
What is a non contact force?
A
A force acting on an object without coming physicaly in contact with it.
4
Q
What is a contact force?
A
The force with two objects having contact with each other.
5
Q
What is radiation?
Heat energy transfer
A
The heat waves emitted from an object.
6
Q
What is convection?
Heat energy transfer
A
The denser cold fluid goes down and the less dense hotter fluid rises.
7
Q
What is conduction?
A
The heated particles gain energy and bump into the next, moving the heat.
8
Q
What is the calculation for speed?
A
Distance divided by time.
