How Dowlindandwater Natale side I Crabtree Publishing Company OS www crabtreebooks com
Contents Our changing Earth Wind erosion Wind weathering Water 10 Oceans and tides 12 Rivers and streams 14 Water from the sky 16 Frozen water 18 River of ice activity 20 Studying changes 22 Learning more 23 Words to know and Index 24
Our changing Earth Earth is always on the move Some forces are building up new landforms Other forces are wearing them down Wind water and ice can break large landforms into small pieces This process is called weathering Some changes happen quickly Other changes happen slowly Weathering is a slow process Weathering creates interesting rock
