density Flashcards
1
Q
formula for density
A
density = mass/volume
2
Q
define volume
A
the space occupied by an object
3
Q
define density
A
mass per unit volume
4
Q
define solid
A
object with no air filled inside
5
Q
define hollow
A
object with air filled inside
6
Q
formula for volume (regular shape)
A
length x width x height
7
Q
how to calculate volume for irregular shapes
A
use displacement method. increased volume of water - original volume of water = vol of object
8
Q
what is the unit for density
A
g/cm^3 or kg/m^3
9
Q
formula for mass
A
density x volume
10
Q
formula for volume
A
mass/density
11
Q
why do objects float on water
A
because they have a lower volume than water
12
Q
what increases with density
A
atomic number
13
Q
why do ships float
A
ships are hollow, most of the interior of a ship is air, so the average volume of a ship is lower than water.
