Science 7
Kotchounian
Study Guide for Mass, Volume, Density Assessment
 Be able to use the triple beam balance to find mass to the nearest tenth of a gram
o Must make sure pointer and indicator are aligned before using so that your
answer is accurate
o If not aligned, turn the balance nut under the pan to adjust
 Be able to use a graduated cylinder to find volume to the nearest tenth of a milliliter
o Cylinder should be flat on table and you should be reading the meniscus (curve in
water) at eye level to get accurate readings!
 Know the proper units to use:
o Volume – mL, L
o Mass – g, Kg
o Density – g/cm3
 Know and be able to use the formula for finding the volume of a rectangular box
o V=lwh
o Units in answer are cubed (exp. cm3)
 Be able to describe how to use displacement to find the volume of an irregularly shaped
object
 Density describes relationship between mass and volume
 Be able to use the formula d=m/v to find the density of an object
o Remember to use correct units in your answer (g/cm3)
 Weight
o Measured with a scale that tells how hard gravity is pushing on an object
 Be able to describe why an object on Earth and the Moon have the same mass, but their
weight is different