1 / 6

Chapter 5 Rocks

Chapter 5 Rocks. Classifying Rocks. Figure 3 Texture helps geologists classify rocks. Forming Operational Definitions – Looking at the rocks below, describe the characteristics of a rock that help you define what a rock’s “grain” is. Figure 3: Sample Answer.

plath
Télécharger la présentation

Chapter 5 Rocks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 5 Rocks Classifying Rocks

  2. Figure 3 Texture helps geologists classify rocks. Forming Operational Definitions – Looking at the rocks below, describe the characteristics of a rock that help you define what a rock’s “grain” is.

  3. Figure 3: Sample Answer • Texture is described with the terms based on: • Grain size • Fine-grained • Coarse-grained • Grain shape • Smooth • Jagged • Grain pattern • banded • nonbanded

  4. What characteristics are used to identify rocks? • When studying a rock sample, geologists observe the rock’s • Color • Texture • Determine its mineral composition

  5. What are the three major groups of rocks? • Igneous rock • Forms from the cooling of molten rock – either magma below the surface or lava at the surface • Sedimentary rock • Forms when particles of other rocks or the remains of plants and animals are pressed and cemented together • Forms below the surface • Metamorphic rock • Forms when an existing rock is changed by heat, pressure, or chemical reactions • Most metamorphic rock forms deep underground

  6. What tests do geologists use to identify minerals in rocks? • Scratch Test (Mohs) • Use acid to determine whether the rock contains the mineral calcite • Magnet test

More Related