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高中地理多媒体课件 PowerPoint PPT Presentation


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高中地理多媒体课件. 东台市一中 地理教研组 王如林 @ 江苏. 这是什么自然现象?. 火 山喷发. 火山活动是一种地质灾害. 目 的. 知识体系:. 地质灾害. 防御. 一、什么是地质灾害. 二、地质灾害的类型. 什么是地质灾害?. 地质灾害. 地质灾害. 陆地环境在地质作用的长期作用下,不断变化着。有时变化表现的异常激烈,当这些自然现象破坏了人类的生存的环境,并且危及人类的生命和财产的时候,便形成了地质灾害。. 定义:. 宇航探测发现,月球、火星和金星等天体上,也有火山活动,有的甚至比地球上的更为壮观、激烈,那它们是地质灾害吗?. 思考:.

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高中地理多媒体课件

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