E7 D7 A We're gonna rock, gonna rock, around the clock tonight. Igneous rocks are defined as types of rocks that are formed when molten rock (rock liquefied by intense heat and pressure) cools to a solid-state. Rocks are categorized into types based on the way in which they form. 3 main types of rocks: a. OK, if it has coarse grain it must be one of these shaded rocks. The key can help guide you to the correct rock identification. Lava is molten rock flowing out of fissures or vents at volcanic centers (when cooled they form rocks such as basalt, rhyolite, or obsidian). Amphibole, Plagioclase and Biotite are no help because they are found in more than one zone but Potassium Feldspar is the important clue. 1 Lab 7 – Rocks and the Rock Cycle Answer Key Name: Answer Key The Major Rock Classes Igneous Rocks 1. This worksheet has 14 Earth Science Regents questions about igneous rocks. Is the rock made of crystal grains? Interactive Rock Identification chart answer key. Questions!! 1. Covers the following skills: how to differentiate among igneous, sedimentary, and metamorphic rocks by referring to their properties and methods of formation (the rock cycle). Rock B most likely is (1) conglomerate (2) schist (3) obsidian (4) peridotite Rocks!are!made!of!different!minerals.! Plagioclase Feldspar and Potassium Feldspar. Igneous rocks form as molten, mineral-rich material cools (or, you might say, “freezes”) as it rises toward earth’s surface. THE ROCK KEY Use this key to ask and answer questions on your unknown rock specimens. (Does it have a lot of flat, shiny faces – may be tiny or small - that reflect light … Igneous Rock Identification Name: Date: Partner (s): As you now know, rocks are composed of minerals or a combination of minerals. Fill in the questions below test your knowledge of rock cycle. 1.!!What!is!the!difference!between!rocks!and!minerals?!! Minerals & Rocks Review Qs Base your answers to questions 6 through 8 on the table below which provides information about the crystal sizes and the mineral compositions of four igneous rocks, A, B, C, and D. 6. Most Igneous Rocks have a texture. a) Crystalline b) Clastic c) Glassy d) Other (made from dissolved minerals or organic material) 2. !!!!!RocksWorksheetAnswers!! Check out http://igg.georockme.com for an online practical study guide for students and teachers. Questions relate to using the Earth Science Reference Tables page 6 (Scheme for Igneous Rocks), environment of formation (extrusive vs. intrusive), vesicular gas pockets, 4th Grade Science Worksheets and Answer keys, Study Guides. There are both multiple choice and fill-in questions. Rocks and minerals. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The Rock Cycle : There are three main types of rocks: igneous, sedimentary and metamorphic rocks and these rocks all form in different ways. 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