mass and weight ch1 Flashcards

1
Q

mass is

A

the measure of amount matter in an object

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2
Q

weight is

A

the force of gravity on an object

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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

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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

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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

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6
Q

__________used to measure mass of materials

A

balance

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7
Q
A
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