The Bomb — Theodore Taylor

It is 1946, a year after the bombings of Hiroshima and Nagasaki, and World War II is over. But the U.S. government has decided that further tests of atomic bombs must be conducted. When Bikini Atoll is chosen for the testing site, the inhabitants of the tiny island are told they must relocate for just two years. But sixteen-year-old Sorry Rinamu believes the Americans are lying and that it will never be safe to return. He must find a way to stop the first bomb before it is dropped . . . even if it means risking his own destruction.