The changing Earth

The Earth is much more interesting than lots of stuff in the solar system because it's always changing

The Earth is changing

• The Earth's been changing for thousands of millions of years and it's still changing now
• In a few million years, the Earth's going to look different 
• Mountains that are huge today will be much smaller and new ones will be made
• The map of the world will be different-whole continents (big chunks of land like Africa and America) will be moved

Rocks show that the Earth is changing 

• Rocks change over the years and give clues about how the Earth has changed
• Erosion goes on everywhere
• But something must be making new rock because without it all the mountains would have worn down by now and the Earth would be perfectly smooth
• When lava (liquid rock) from volcanoes cools, it forms brand new rock
• There…