Question

The current theory of the structure of the

Earth, called plate tectonics, tells us that the
continents are in constant motion.
Assume that the North American continent
can be represented by a slab of rock 4650 km
on a side and 34 km deep and that the rock
has an average mass density of 2630 kg/m3
.
The continent is moving at the rate of about
4.8 cm/year.
What is the mass of the continent?
Answer in units of kg.

Answer 1

We need to first determine the volume of the continent and then mass would be = Volume x density

Step-by-step explanation: