Imagine that we put a raisin cake into the oven, with each raisin separated from the others by 1 cm. An hour later, we take it out and the distances between raisins are 3 cm. If you lived in one of the raisins and watched the other raisins as the cake expanded, which of the following would you conclude?
A) All raisins would be moving away from you at the same speed.
B) More distant raisins would be moving away from you faster.
C) More distant raisins would be moving away from you more slowly.
D) It depends: If you lived in a raisin near the left side of the cake, you'd see other raisins moving away from you, but they'd be coming toward you if you lived in a raisin near the right side of the cake.

Question

Quizplus · Accepted Answer

This is a classic example of Hubble's law, which states that distant objects in the universe are moving away from us at a faster rate than close objects. In this case, the raisins that were originally farther apart have moved away from each other at a faster rate than the raisins that were closer together. Therefore, if you lived in one of the raisins, you would see the more distant raisins moving away from you faster.

Imagine That We Put a Raisin Cake into the Oven