1. Apollo astronauts left seismometers on the Moon that radioed seismic data back to Earth. The data showed that moonquakes occur more frequently when the Moon is at perigee (closest to Earth) than at...

1. Apollo astronauts left seismometers on the Moon that radioed seismic data back to Earth. The data showed that moonquakes occur more frequently when the Moon is at perigee (closest to Earth) than at other locations along its orbit. Give an explanation for this finding.

2. Comment on the idea that without the Moon’s presence, life would have developed far more slowly.