Global surface temperature

Have you ever felt hot or cold? Earth has a temperature too! It's called global surface temperature. It's like an average of how warm the land and the oceans are all over the world. Scientists use special tools, like thermometers at weather stations and even satellites way up in space, to measure it. This helps us know if our planet is getting warmer or cooler, like checking if you have a fever!

It's tricky to know Earth's temperature from a super long time ago because there were no thermometers! But scientists are like detectives. They look at clues in nature, like the rings inside trees (older trees have more rings!), tiny shells from sea creatures called corals, and layers of ice in very cold places.

These clues help them guess what the temperature was like hundreds or even thousands of years ago. It's like reading an old diary!

Knowing Earth's temperature is super important. If it gets too warm, it can cause big changes. Ice in cold places can melt, making the oceans rise. Weather might get more extreme, with stronger storms or longer dry spells. It affects where animals can live and how plants grow. Keeping track of Earth's temperature helps us understand these changes and take care of our amazing planet.

Scientists have been measuring temperatures for a long time, since around the 1850s. They've noticed that over the years, Earth's average temperature has been going up. It's a small change each year, but it adds up! This warming trend is a big clue that something is changing on our planet. By watching the temperature, we can learn more about our world and how to protect it for everyone.