mass and weight ch1 Flashcards
1
Q
mass is
A
the measure of amount matter in an object
2
Q
weight is
A
the force of gravity on an object
3
Q
my mass is 127 kg on both Earth and Mars.
However, I would weigh on earth but on
Mars ?
A
our weight would change because Mars has less gravity than Earth
4
Q
mass units
A
1 kg = 1,000 g
1 mg = 0.001 g
1 mg = 0.000001 g or 1.0 x 10-6 g
1 ng = 0.000000001 g or 1.0 x 10-9 g
5
Q
why can’t we use weight for scientific measurement ?
A
bacuse weight of an object may vary from one place on the earth to the next and mass independent on gravity
6
Q
__________used to measure mass of materials
A
balance
7
Q
A
