Which model closely resembles the thickness of the crust relative to the rest of the earth?

Question

1. The crust is like the yogurt around a yogurt-covered raisin.
2. The crust is like the shell on a hard-boiled egg.
3. The crust is like the peel of a grapefruit.
4. The crust is like caramel around a caramel apple.

Answer 1

The model that closely resembles the thickness of the crust relative to the rest of the Earth is:

2. The crust is like the shell on a hard-boiled egg.

This analogy works well because the shell of a hard-boiled egg is relatively thin compared to the rest of the egg, just as the Earth's crust is thin relative to the overall thickness of the Earth (which includes the mantle, outer core, and inner core).