Orders of magnitude

Orders of Magnitude

Used to make appropriate comparisons between numbers or objects.

How to compare magnitudes

Divide the bigger number by the smaller number.

Result less than 100

They are the same order of magnitude.

Number around 10

The number is 10 or 1 order of magnitude bigger.

Number is around 100

It is 10^2 bigger or 2 orders of magnitude bigger.

Diffusion

The movement of particles from a high to a low concentration.

Osmosis

The movement of water from a dilute (high water concentration) to a concentrated (low water concentration) solution through a semi-permeable membrane.

Active Transport

Requires energy- the movement of particles from a low to high concentration through a semi-permeable membrane.