Length
What tool is used to measure mass?
A scale
True or false. 1 mg > 1 kg
False
What is the 3 base units in the metric system?
Meter, gram, liter
Explain one way to find the volume of a rock.
The displacement methods (where water is displaced and measured)
Greg says air has mass and volume. Sarah says air only has volume but no mass. Trevor says they are both wrong, air is just air, it does not have mass or volume. Who is correct?
Greg is correct. Air has both mass and volume.