Maria participates in an experiment where the experimenter shows her two identical balls of clay and watches as she rolls one ball of clay into a long hot-dog shape and leaves the other ball of clay in the original round ball. Maria is then asked which piece has more clay. Maria is 9 years of age and knows that the two shapes contain the same amount of clay. What principle does Maria understand?

the answer is a wheel

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.

its b. they were outraged that former confederates were able to join congress.