NAME: ______________________ H.R: ______ DATE: ___________________ SCI & TECH 204 The Earth & Space SECTION 2: Geological Phenomena NOTE-TAKING WORKSHEET Orogenesis: Mountain Formation (pg. 328) Most of the younger mountainous regions are found in zones where tectonic plates _________________ ( _______________________ zones) The process of mountain formation is called ____________________________. When two continental plates _____________________, the Earth’s crust ______________, this mean it ______________ over and ________________. Examples of mountain chains are the _______________________ in Nepal and the _____________ in south-central Europe. http://geofrik.com/2013/04/24/orogenesis/ What is a mountain? ___________________________________________________________________ ___________________________________________________________________ The highest summit on Earth is ________ m. That is Mount ________________ in the ___________________. Mountains are easy targets for _____________, ______________, and __________ and several other _________________ factors. Please answer Memory Check Questions #1-3 on p. 328 on a separate sheet. Page 1 of 3 NAME: ______________________ H.R: ______ DATE: ___________________ SCI & TECH 204 The Earth & Space SECTION 2: Geological Phenomena NOTE-TAKING WORKSHEET Erosion (pp. 329-331) The slow but enormous changes in the Earth’s landscape are mainly caused by the movement of ________________ ____________. However, another force transforming the Earth’s landscape is _________________. The effect of _______________, ________________ and ___________ wear down rocks and ______________ them up. Erosion results in a ______________________ of landforms; it tends to make mountains ________________ and ___________ in valleys. Three stages of erosion 1. ______________________: runoff and the ______________________ cycle fragments ________________ rocks. 2. ______________________: rock fragments are carried by runoff water and _______________. 3. ______________________: fragments suspended in _______________ or transported by _________________ or ____________ accumulate and are ____________________ at the bottom of the ________________. They may also ___________________ (build up) in _____________ and plains. The three main agents of fragmentation are __________________, _____________ and the _______________-_____________ cycle. Erosion can be slowed by certain factors; for instance _____________ ___________ hold soil in place (so don’t cut down any trees!!!) and can prevent _______________. Page 2 of 3 NAME: ______________________ H.R: ______ DATE: ___________________ SCI & TECH 204 Categories of Erosion There are three main categories of erosion: 1. _____________________ erosion: Caused by ________________ organisms such as _________________ and _________________. When they __________________, they release _________________ substances that attack rocks. Tree roots ________________ fissures of rocks and ________________ them apart. 2. _____________________ erosion: Caused by variations in ___________________ and __________________ or by _____________ and ______________. This is a _____________________ process that fragments rock. 3. _____________________ Erosion: ___________ ____________ chemically changes certain minerals in the soil (such as __________________) which gradually destroys rocks. Aging Mountains Like humans, the appearance of a mountain depends on its _____________. A young mountain has a __________ and _______________ peak. An old mountain has a ___________________ shape. Young Mountain Chains (still growing) Old Mountain Chains Please answer Memory Check Questions # 1-5 on p. 331 on the back of this page. Page 3 of 3