Essential Questions

I think that all the mountains after a certain time will disappear but new mountains will form so it is a never ending cycle. All the canyons and valleys also make this world look different. Erosion is a big effect on this. There are 4 types of Erosions I learned. Water erosion which make canyons and valleys. Sand erosion which can change the way a mountain looks. Glacier erosion can cut a whole mountain off because it is a big chunk of ice moving. Finally there is chemical erosion which means if there is a crack in a rock in very cold temperatures, it will freeze and crack the whole rock.