Contents Chapter 1 WHAT IS A SEASON page 4 Chapter 2 WHAT CAUSES THE SEASONS page 10 Chapter 3 WET AND DRY SEASONS U page 22 Chapter 4 WHAT THE SEASONS DO page 26 Science and the Seasons 37 Glossary 38 Learn More about the Seasons 39 Index 40
Chapter 1 what is a season In many parts of the world people swim in lakes during summer And they ice skate on those same lakes during winter But they cannot ice skate in the summer and they would not want to swim in the winter Why is the weather so different during summer and winter The same lakes people skate on in the winter turn to liquid water in the summer all thanks to Earth's cycles What is a cycle
These changes happen because of Earth's seasonal cycle The natural world has many different cycles A cycle is a pattern that repeats over time in a predictable way A boy jumps into a lake on a hot summer day
