If you took the same amount (the exact same volume), of a piece of crust and compared it to a piece of the core, which one would be heavier for its size? Why?

The answer is below

Explanation:

Density is the amount of matter contained in a certain space. Objects that are dense are very heavy compared to their size while objects that are not dense are very light compared their size. Therefore most dense objects sink when placed in water while less dense objects floats in water.

Density is the ratio of mass to volume. It is given by:

Density = mass / volume

Crust has a density of 2.2 - 2.9 g/cm³ while core has a density of  9.9 - 12.2 g/cm³ for its outer and 12.8 - 13.1 g/cm³ for its inner.

Therefore if the same amount of a piece of crust is compared to a piece of core, the core would be more heavier since it has more density than the crust.

5 * -2

Everyday, he takes $2, so he's going to be $2 more in debt each day. This means he's going to have -$2 each day.