This a problem illustrates why scientists use significant figures.

A geologist finds an interesting fragment of an asteroid and correctly determines it is 9 billion years old. The rock is then placed in a museum. One thousand years from now, how old would someone say the rock is?

Note: The unit symbol for billion years is Gyr; the G is for "giga" or billion and yr is for years.

Answer rating: 100% (QA)

Scientists use significant figures to communicate the precision and accuracy of measured values In t... View the full answer