Test 8 ~ Objective 1

Objective 1:

1. Mass is more useful than weight in measuring matter because mass is always the same, and weight changes depending on gravity.  Since scientist don't want to get different answers, they use mass because it never changes, or it is a constant.  I think (I am not sure) that an example of this is when you are on the moon, you have a lighter weight (because there is less gravity) than when you are on earth, but you have the same mass in both places.

2. The volume of the plastic box is 619.65 cm3 (centimeters cubed.)

3. The unit of measurement for density is the size (ex: g) and the unit of volume (cm3 *centimeters cubed*.)  For example, is something that was 2 grams had a volume of 12 cm3 (centimeters cubed), you would put 2 g/ 12 cm3 (centimeters cubed.)

4. The formula for finding density is mass divided by volume, or mass over volume.

5. The formula for finding volume is length multiplied by width multiplied by height (l*w*h)


Cites:
http://wiki.answers.com/Q/Why_is_mass_more_useful_than_weight_for_measuring_matter
http://en.wikipedia.org/wiki/Density
http://en.wikipedia.org/wiki/Volume