Life as we knew it, by Susan Beth Pfeffer

Miranda is a typical sophmore in high school - anxious for her driver's liscence, hanging out with her friends, arguing with Mom, and looking forward to Prom. An interesting astrological event has her neighbors in lawn chairs viewing the moon on the evening an meteor is predicted to hit the moon. The meteor hits, and life on earth is changed forever as the collision shifts the moon closer to the earth causing violent earthquakes, erupting volcanoes, huge tsunamis, and millions of deaths. All that Miranda has taken for granted suddenly begins to disappear. Food and gasoline are in short supply, and winter is coming on without heat or electricity. This is hard to put down, and hard to forget.