*Learning resources for product buyers

Ancient_02. Stonehenge


4. Integrating World History and Chemistry

Estimating the Age of Historical Objects

Radiocarbon Dating

How can we figure out how old something is? Well, we can look at other things that were found in the same place and guess their ages.

There is a special method called radiocarbon dating that helps us estimate the age of objects. It uses something called Carbon-14, which is in the air. When living things breathe, they have the same amount of Carbon-14 inside them. But when they die, the amount of Carbon-14 starts to change.

As time goes by, the amount of Carbon-14 in an object gets smaller. So by measuring the amount of Carbon-14 left in something, we can make a guess about how old it is. It takes about 5,730 years for half of the Carbon-14 to disappear.

Radiocarbon dating was invented by a scientist named Willard Libby. He won a Nobel Prize for his discovery. It has helped us learn a lot about things from prehistoric times.

Quizess of the Stonehenge

1. Which stone is at the entrance of Stonehenge?

2. What is prehistory?

3. What are the three material ages?

4. Who is the goddess of beauty?

5. What method lets us know how old an object is?

6. Who discovered the Venus of Willendorf?