Exam (elaborations) GIZMO Copy Of 2.9 Rock Classification SE

Exam (elaborations) GIZMO Copy Of 2.9 Rock Classification SE Vocabulary​:​ classify, extrusive igneous rock, foliation, fossil, igneous rock, intrusive igneous rock, metamorphic rock, mineral, sedimentary rock, strata, texture Prior Knowledge Questions ​(Do these BEFORE using the Gizmo.) When you classify​ objects, you organize them into groups based on common characteristics. 1. What are some different ways you could classify these marbles? They’re colors, weight, size 2. What characteristics do you think scientists use to classify rocks? material, color, Gizmo Warm-up Rocks are classified by how they formed. The three types are: ● Igneous rocks​ form from cooling magma or lava. ● Sedimentary rocks​ form from the bonding of rock fragments such as sand, silt, or clay; from organic materials; and from chemicals dissolved in water. ● Metamorphic rocks​ form when other rocks are changed by heat and pressure. In the Rock Classification Gizmo™, you will get to explore these three types of rocks. Think about how each type of rock is formed. 1. Fossils​ are the remains of ancient plants and animals. Which type of rock do you think is most likely to contain fossils? sedimentary 2. Foliation​ occurs when minerals are flattened by heat and pressure. This results in a layered or banded texture. Which type of rock do you think is foliated? metamorphic 3. Air pockets can form in rapidly cooling magma or lava. In which type of rock would you expect air pockets? igneous GIZMO Copy of 2.9 Rock Classification SE Activity A: Classifying rocks Get the Gizmo ready: ● Click Reset​. Introduction: ​You can classify rocks by examining characteristics such as texture​. A rock’s texture is determined by the sizes, shapes, and positions of the grains that make up the rock. Goal: Classify rocks as igneous, sedimentary, or metamorphic. 1. Summarize: The three groups of rocks each have unique characteristics. For example, many igneous rocks have a texture of interlocking mineral​ crystals. Sedimentary rocks may have distinct layers of sediments, known as strata​. To learn other characteristics of igneous, metamorphic, and sedimentary rocks, turn on Show common characteristics​ in the CHARACTERISTICS pane. In the table below, summarize the textures that will allow you to identify and classify these rock types. Rock type Characteristics Igneous rcontains small holes , interlocking crystals with no layering or color banding Sedimentary formed of particles such as pebbles,sand, silt or clay cemented. may contain fossils Metamorphic layers of light and dark sections 2. Classify: Select Name​ on the SIMULATION pane. Move your cursor over the rock pictures. Based on what you see, classify the rocks by dragging them into the correct box on the CHARACTERISTICS tab. Record your classifications (in pencil) in the table below. Rock type Rock names Igneous pumice, basalt, gabbro, granite Sedimentary conglomerate,siltstone,sandstone,limestone Metamorphic schist,slate,marble,gneiss Click on Status​ to check your answers. If necessary, change your classifications of rocks on the Gizmo, and make any needed corrections to the table above. When you are done, click COPY SCREEN ​to take a screenshot, and then paste the image into a blank docum