Question

which has more mass: an armful of feathers or an armful of lead?
an armful of feathers
an armful of lead
both have the same mass.
which has more volume: a kilogram of feathers or a kilogram of lead?
a kilogram of feathers
a kilogram of lead
both have the same volume.
which has higher density: a kilogram of feathers or a kilogram of lead?
a kilogram of feathers
a kilogram of lead
both have the same density.

Explanation:

Density is mass per unit volume. Lead has a much higher density than feathers. For the first question, an armful of lead has more mass because lead is denser and the same - volume armful will contain more mass. For the second question, a kilogram of feathers has more volume as they are less dense. For the third question, a kilogram of lead has higher density as density is an inherent property of the material and lead is denser than feathers.

Answer:

1. an armful of lead
2. a kilogram of feathers
3. a kilogram of lead