unit 1 science vocab

mass

how much matter there is in an object

volume

how much space an object takes up

density

amount of matter in a given space

meniscus

a curved surface formed from a liquid in a graduated cylinder

irregular object

doesn't have a fixed shape

principle of displacement

volume of water displaced equals volume of object

independent variable

variable that is changing

dependent variable

variable being measured

control variable

variable that stays the same

matter

anything that has mass and takes up space

weight

the force exerted on an object due to gravity

equation for weight

W = m x g

mass unit

grams

volume unit

ml

weight unit

Newton

equation for density

D = m/v

equation for volume

V = m/d

equation for mass

M = d x v

relative density

less dense substances float over more dense substances