"What is Density?"

if an objects density is (LESS/ MORE) than 1 g/ml it will float in water.

If an objects density is LESS than 1 g/ml it will float in water

What 2 units do you need to calculate Volumetric-mass density?

Mass and Volume

Which has a greater density 100kg of bricks or 100 kg of feathers?

both have the same mass, but the pile of feathers has a much greater volume

Volumetric-mass density formula

Density = mass / volume or D=m/v

which has a greater density 100 kg of bricks or100 kg of feathers?

100 kg of bricks

A good way to think about population density is...

"How crowded is it?"

What is the density of water?

1 g/ml

Hong Kong

High population density - a lot of people are there

If a block is .1 g/ml, what will happen to the block?

It is 10% of the density of water - 10% will sink, 90% of the block will float.

If a block is .9 g/ml, what will happen to the block?

It is 90% the density of water - 90% of the block will sink, 10% of the block will float

if there is a block that is .5 g/ml, what will happen to the block?

It is half the density of water so half of the block will sink and half of the block will float.

What is the SI unit used for density?

Liquids (g/ml)

Density

Measure of amount of something as compared to the amount of space it occupies

What is it called if an object's density is equal to 1 g/ml it will neither sink nor float?

Neutrally buoyant

What SI unit is used for density?

Solids (g/cm3)

The (MORE/LESS) dense the object, the higher it will float.

The LESS dense the object, the higher it will float.

Volumetric-Mass Density

The amount of matter in a given volume

if something is less dense than air (.0013 g/ml) it will float in air

air is a fluid, a fluid can "flow"

if an object is (LESS / MORE) dense than the fluid it is in the object will float

if an object is LESS dense than the fluid it is in the object will float

If an objects density is (GREATER/LESS) than 1 g/ml it will sink in water

if an objects density is GREATER than 1 g/ml it will sink in water

Which is more dense? an empty oil tanker or a tanker full with oil?

the full tanker has more density. The full tanker has more mass than the empty tanker.