How does carbon dating tell the age of buried wood or bones?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How does carbon dating tell the age of buried wood or bones?

The Big Idea

How do scientists know how old a buried bone or piece of wood is? They use a natural clock inside it! It is called carbon dating.

Taking It In

Step one: Taking It In. All living things take in a tiny amount of a special kind of carbon called carbon-14. Plants and animals keep taking it in while they are alive.

Fading Away

Step two: Fading Away. When they die, they stop taking in more, and their carbon-14 slowly fades away at a steady rate. Half of it is gone after 5,730 years.

Measuring

Step three: Measuring. By measuring how much is left, scientists can work out how long ago something died. It works for things up to about 50,000 years old.

A Closer Look

Let's take a closer look! Living things take in carbon-14. When they die, it stops. Carbon-14 fades slowly. Scientists measure what is left.

Quick Facts

Quick facts! The method is called radiocarbon dating. Half of the carbon-14 is gone every 5,730 years. It works on wood, bones, and other things that were once alive. It does not work on rocks, which need other methods.

Think Like a Scientist

Now, think like a scientist! Start with 16 pennies. Take away half to show one half-life. Now you have 8. Keep halving until one is left. How many half-lives did it take?

Outro

Carbon dating works because living things take in carbon-14, which fades at a steady rate after they die, with half gone every 5,730 years. Measuring what is left tells their age. Science is amazing! Remember, every big discovery starts with a small question. Keep looking, keep learning, and keep asking why! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!