How does granite relate to continental crust?
All granite can only be found in really old continental crust.
All continental crust is made of granite.
Granite cannot be found oceanic crust.
Granite can be mined in continental crust.

All continental crust is made of granite.

Explanation:

The earth consists of multiple layers and the lighter particles are found on the upper surface and the heavier particles tend to settle in the base of the earth.

The continental crust is layer of earth which is composed of igneous, metamorphic and sedimentary rocks they usually forms the continents and the areas of the shallow seabed.

This area is base and usually consists of the heavier particles which is usually made of granite. It also contains volcanic lava and rock called basalt. Basalt and granite are heavier particles so they make continental crust.

the wires in the toaster turning red and the toast crisping and turning brown

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.