c. would erupt explosively. The lesson describes several specific types of igneous rocks in a chart. 29 0 obj <>/Filter/FlateDecode/ID[]/Index[21 21]/Info 20 0 R/Length 60/Prev 41862/Root 22 0 R/Size 42/Type/XRef/W[1 2 1]>>stream As the magma cools down, the grains grow together and harden. In this lab, students will identify up to 6 igneous rocks. Click to reveal What is the difference between mafic and felsic? Which two properties of igneous rocks seem to be related to one another? The texture of igneous rocks will depend greatly on: The rate at which they cool. Repeat steps 2-4, forming sedimentary rock this time. Igneous rocks that form as magma cools underground are called__________. 41 0 obj <>stream The last couple pages of the lesson plan document are answer keys for both the practice worksheet and the homework assignment. If the crystals are small or impossible to see without a magnifying lens, the rock is . e. peridotite-rhyolite. Magma composition, the location where the lava or magma cools and crystallizes,. What type of rock forms when magma cools? It correctly identifies the following crystallization process of magma differentiation in metamorphic rock: olivine, pyroxene, amphibole, and biotite. Magma vs. Lava 5. Igneous rock forms when the melted rock cools down and hardens into a solid. 5. Rocks that result from a magma cooling inside the earth's crust are called (a) __________ . Physical weathering includes wind, water, waves, and temperature changes. When volcanic material erupts and cools and crystallizes on Earth's surface, it forms a type of igneous rock called_________. If all the crystals are large enough to see and have an interlocking texture, the rock is____________. Sometimes igneous rock is below the surface. slowly. Igneous Rock 5. narwhalunite. Igneous rocks are formed by the: a. accumulation of loose debris that is later cemented together. What are plutons and how are they classified? This lesson is for students in 4th grade, 5th grade, and 6th grade. Igneous rocks are classified, in part, due to their _______content. crystals. Key Concept Check 1. 21 0 obj <> endobj When you have completed the free practice test, click 'View Results' to see your results. All rights reserved. The lesson provides details about each type of rock and describes each step of the cycle.