Motion & Pressure - Glossary Flashcards
1
Q
What is acceleration?
A
The amount by which speed increases in one second
2
Q
What is atmospheric pressure?
A
Pressure caused by collisions of air molecules
3
Q
What is the centre of gravity?
A
The point in an object where the force of gravity seems to act
4
Q
What is centre of mass?
A
The point in an object where the mass of an object seems to act
5
Q
What is density?
A
The mass of a material in a certain volume
6
Q
What is gas pressure?
A
The force exerted by air particles when they collide with a surface
7
Q
What is liquid pressure?
A
The pressure produced by collisions of particles in a liquid
8
Q
What is moment?
A
The measure of the ability of a force to rotate an object about a pivot
9
Q
What a pivot?
A
The point about which a lever or see-saw balances
