Directions: On the line before each description, write the letter of the type of rock that matches it correctly. For the activity worksheet, students will create an acrostic poem using the letters in igneous rocks. They must write either words or sentences that start with each letter. Grades PreK - 5. Expert Answer. The correct answers are all in red so that it is easy for you to compare them with students responses. . All rights reserved. What does a finely crystalline or glassy igneous texture indicate in geology? crystals. If the crystals are small or impossible to see without a magnifying lens, the rock is ____________. 1. One final option is to invite a geologist or rock collector to speak with the class and answer their questions. 30,000+ Video Lessons 2,000,000+ Questions . They can form where tectonic plates diverge. Rocks and the Rock Cycle - legacyjr.net - YUMPU Since this mass cools rapidly, the crystals are (b) __________ in size and the rock's texture is (c) __________. PDF Lesson 1: Minerals and Rocks - pa01001022.schoolwires.net Rocks formed from the cooling lava of volcanic eruptions are. For instance, one options is to have students write poems or stories about igneous rocks and how they form, from the perspective of a piece of sediment. Last, they will fill in the blanks of a paragraph using the word bank. Your IP: The subsilicic rocks, enriched as they are in iron (Fe) and magnesium (Mg), are termed femic (from ferrous iron and magnesium), whereas the silicic rocks are referred to as sialic (from silica and aluminum, with which they are enriched) or salic (from silica and aluminum). 5. Quiz, Psychological Research & Experimental Design, All Teacher Certification Test Prep Courses, Working Scholars Bringing Tuition-Free College to the Community, Understand why igneous rocks have different textures, Name the rocks that contain a lot of feldspar and quartz, Differentiate between phaneritic rocks and aphanitic rocks, Highlight the differences amongst felsic, mafic, and ultramafic rocks, Give examples of the types of igneous rocks. This texture develops where eruptions are (b) __________ in nature. If all the crystals are large enough to see and have an interlocking texture, the rock is _____. Cancel . Its first use was as a cutting tool, like a knife, arrowhead, or spear point. Igneous rock | Characteristics, Examples, Formation, & Types In aphanitic rocks, the crystals are large enough to be identified with the naked eye, while in phaneritic rocks they are not. The guide helps you organize the lesson and details when to hand out worksheets. How are igneous rocks dependent on minerals?

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