Y9:Phy11.1- Flashcards
1
Q
Density
A
the mass of a substance in a certain volume
2
Q
An object will float on a liquid if it —.
A
has a density that is less than that of the liquid
3
Q
density of water
A
1g/cm^3 or 1000kg/m^3
4
Q
The object floats if—.
A
the upthrust is equal to the weight
5
Q
The particles in a dense liquid will —, because they’re –.
A
exert a bigger force than those in a less dense liquid; more massive
6
Q
Ice is less dense water because when water freezes, —.
A
the water molecules form a solid structure that takes up more space than water
7
Q
Objects float because —.
A
liquids exert a force on them, called upthrust
8
Q
Upthrust is produced by—.
A
collisions of liquid and gas particles
9
Q
Density can be used to–.
A
identify materials
