地球表面的不同样子

石头破碎的过程

The process of rock breaking

石头被带走到别的地方

wear away by the action of water, wind, or glacers

石头泥土最后停下来

Dropping of sand or rock carried by wind, water, or ice.

水、风、海、和冰川对地表的破坏作用

Process of moving weathered bits of rock

用来测量火山活动的机器

用来测量火山活动的机器

Measure changes in change of the earth's surface to help predict volcanos

很多的冰堆积在一起然后开始往低的地方移动

Thick Layers of ice moves down from mountain

岩石风化变小，但是岩石的里面的东西不变

changes the size or shape of the rocks.

岩石因为碰到一些化物质而被风化变小

minerals in the rock change their chemical makeup

石拱门是被雪、雨、风等等一连串的风化、侵蚀而变成的

curved rock formations formed by erosional forces

比高原和台地小

isolate hill with steep,even sides, and flat top

bigger rock with steep sides and flat top

是一个上升的地形

 an area of a highland with flat top

一种能量释放，是由于断层突然的滑动

energy waves caused by sudden shfit of earth crust at a fault

在地壳里的缝隙，压力太大时会突然滑动

Crack in earth's crust that allows crust to slip

natural force that causes things to fall toward the earth

opening in earth's crust that allow rock, ash, and gas to erupt out

地球表面受到外力而上升

part of earth's surface that rises above surrounding land

可以知道地震有多大的机器

instrument that measures and records details of earthquakes

地球最外面的一层岩石层