These are rocks made from fire or heat deep down in the earth the rocks and minerals are very hot and the heat froms them into magma. Rock types openlearn open university the open university. Rocks can be divided into three broad categories igneous, metamorphic. Can be a teacher led activity or individual work time, or center activity. Igneous rocks are of two types, intrusive and extrusive. Under high temperature and pressure, the sediment becomes compacted. Types of rocks foldable second grade science, third.
The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and the differences among them have to do with how they are formed. This is an exothermic process heat is liberated and involves a change of phase from the liquid to solid state. Soil is quite important as it helps in ensuring life can thrive on earth. This ultimately results in the rock breaking down into pieces. Before examining each group, you will look at a model for the rock cycle, which is the process that shows the relationships between the rock groups. Rocks normally consist of several minerals, some essential, some accessory. A free powerpoint ppt presentation displayed as a flash slide show on id. Igneous rocks are formed when melted rock magma cools and solidifies. Rocks can be a combination of as many as six types of minerals. When the magma reaches the earths surface and turns into lava, it cools and turns into igneous rock. Gabbro and granite are examples of intrusive igneous rocks. A rock is a solid material that is composed of various minerals. Most rocks are a mixture of many different minerals and contain naturally occurring compounds. Types of rocks foldable by the busy class teachers pay.
Rocks form the earths outer solid layer, the crust. The movement of the plates creates three types of tectonic boundaries. It is very important to understand the difference between rocks and minerals. Tiny rocks as small as grains of salt are called boulders. The three major types of rocks are igneous rocks, sedimentary rocks, and metamorphic rocks. Sedimentary rocks are called secondary, because they are often the result of the accumulation of small pieces broken off of preexisting rocks. The three main types of soil known to man include sand soil, loam soil and clay soil. A sedimentary rock is one of the three main rock groups along with igneous and metamorphic rocks and is formed in four main ways.
Based on the characteristics and events shared by a reader. Rapid cooling results in smaller crystals while slow cooling results in large crystals. As a geologist, it is their job to unlock the mystery behind the rock. A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. The following list gives examples of different crystal habits and examples of common minerals. Obsidian, basalt, and granite are all examples of igneous rocks. In regards to the force of compression, external force acts on the rock to squeeze it until it disintegrates. Students list what is made from rocks and explain what they think about why rocks look different. Students will be able to define and describe how the three major types of rocks are formed.
In nature, however, the boundaries between these rocks may well be gradational, and there are a few rock types that do not fit perfectly into a single category. Igneous rocks are sometimes considered primary rocks because they. Rock cycle notes three types of rocks sedimentary igneous metamorphic sedimentary rocks sediment is produced through the process of weathering. The main variations among different types of magmas are. Clastic sedimentary rocks are accumulations of clasts. Through a microscope, a rock shows that it is made of crystals of different minerals, all growing together like a puzzle.
Slightly changing the different elements that combine with silica greatly changes the mineral that results, or the characteristics of the mineral. This is a good way to build background knowledge or check for understanding of this topic. Feb 12, 2007 some examples of metamorphic rocks are gneiss, slate, marble, and schist. These minerals are associated with the mafic and intermediate types of rocks. Others may be soft in the ground, but they harden once they spend time in the air. It has a fine grain structure and is usually black to gray in color. One focuses on the 3 main types of rocks, and the other is a simplified rock cycle diagram with interpretation questions. Three types of rocks jefferson county public schools.
Dec 03, 2009 in all, there are three types of rocks. Igneous rocks are the oldest type of rock and is a volcanic rock. Some examples of metamorphic rocks are gneiss, slate, marble, and schist. Each rock type was formed under certain specific conditions, resulting in the formation of a fairly predictable group of minerals. Briefly metamorphic rocks are formed when the rock becomes unstable as a result of environment. Rocks are classified into three groups based on how they were formed. Large rocks are broken down very gradually and the smaller pieces are transported by wind, water, and ice. Each type of rock has characteristics that make it special and unique, and no two rocks are exactly the same. Plutonic or intrusive rocks result when magma cools and crystallizes slowly within the earths crust. Sedimentary rocks pictures, characteristics, textures, types. Three types of rocks strand rocks topic classifying rocks primary sol es. Students must cut out the boxes and then place them in the right categories. For example, the layers of sedimentary rocks are easily confused with the squished bands of minerals in.
Try and work out whether they are sedimentary, igneous or metamorphic. Types of rocks foldable second grade science, third grade. For example, ruby and sapphire are differently coloured types of the mineral corundum al2o3. Rockforming minerals geological society of glasgow. Photos of common clastic, chemical, and organic sedimentary rock types. We are now going to take a closer look at each of the three main types of rocks. Rocks and minerals unit big rocks are called pebbles. This igneous rock may range from white to pink to gray, depending on the mix of quartz, feldspar, and other minerals it contains. By the end of this lesson, students will be able to define the three major rock types. You should know all about sedimentary, igneous and metamorphic rocks, so have a look at these pictures and see if you can identify each specimen. A mineral is a combination of elements that forms an inorganic, naturally occurring solid of a definite chemical structure. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Sedimentary rock is formed when rocks on the surface are weathered and the small particles, along with plant and animal material, are deposited in sediments at the bottom of lakes, oceans and rivers. Types of rocks foldable by the busy class teachers pay teachers.
After a basic introduction to the rock cycle and the three main types of rocks, young geologists can deepen their understanding of how rocks change through a fun learning game. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Rocks that form when melted rock cools and hardens. Rocks are formed in three different ways to produce igneous, metamorphic, and sedimentary rocks. Teacher will bring a variety of beautiful colorful rocks. Plants get their nutrients from soil while human beings may use a given type of soil for. Compression, shearing and tension are the three main types of stresses faced by rocks. Sedimentary rocks are formed as result of accumulation of species either in land or water. Rocks that become metamorphic are so deep in the crust that they are very close to the mantle. Sedimentary rocks are usually quite soft and crumbly, this is because they are made of grains that are stuck together. Formed from lowsilica lava, basalt is the most common type of volcanic rock.
Three types of rocks sort sedimentary, igneous, metamorphic a sort activity using the three types of rocks, sedimentary, igneous, and metamorphic. Rocks and minerals unit this is a unit i designed for my primarily preschooler, but my older two kids 2nd, 4th grades will join in as well. On the basis of mode of formation the rocks are divided into three categories. Plate tectonics and the action of water combine to create the three main types of rocks. Rocks that form when small grains of rock are pressed together and become cemented. Igneous rocks are divided into two main categories.
A rock can also include nonminerals, such as the organic matter within a coal bed, or within some shales. This presentation will tell you about the 3 types of rocks. Apr 06, 2017 this geology video explains how igneous, sedimentary and metamorphic rocks are formed, how to identify a rocks type and how the rock cycle can change one type of rock into another. Sedimentary rock learners do not need to memorise the different names for all the examples of rocks in the following three sections, but they should be able to name one or two examples for each rock type. For a challenge or for older students have them write their own definitions and examples and save on paper. Metamorphic rocks are formed when preexisting rocks are exposed to extreme heat and pressure metamorphic rocks are found deep within earths crust, so there is a lot of rock on top pressing down. The three main types of mysterious rocks are igneous, sedimentary and metamorphic rocks. Types of rocks and their properties pdf download geography the earths crust is composed of rocks. Nov 16, 2015 compression, shearing and tension are the three main types of stresses faced by rocks. Ideas for a fossil science fair project can range from exploring processes by which fossils are made to making simulated fossils with modern materials. Rocks and minerals unit the science zonewhere everyones. At lower temperatures, the branches merge and we obtain the minerals common to the felsic rocks orthoclase feldspar, muscovite mica, and quartz. They will be able to describe how these three types of rocks are formed.
What is a rock and what are 3 basic types of rocks earth. Arial default design three types of rocks slide 2 slide 3 slide 4 slide 5 slide 6 slide 7 slide 8 slide 9 slide 10 slide 11 slide 12 slide slide 14. Some igneous rocks are formed when the magma erupts from a volcano. They are formed in layers when sediment is deposited. By examining fossils, scientists can ascertain an ancient. These sheets require tracing, some matching, and some. For this rock cycle worksheet, students are given twelve rocks to separate into three major groups of rocks including sedimentary rocks, metamorphic rocks and igneous rocks. The three main categories of rocks linkedin slideshare. However, rocks are difficult to identify because there are great variations in their appearance and composition. In case of shearing, the rock is pulled in two opposite directions by force. Intrusive igneous rocks are formed when the magma cools off slowly under the earths crust and hardens into rocks.
Fossils consist of the remains of any living organism preserved in a hard substance, such as mineral or rock. Plate tectonics information and facts national geographic. Rocks come in many types, but generally fall into three major types. Over vast expanses of time, changes in temperature and pressure within earth may transform rocks into other rock types. Students construct foldable, cut out, match, and glue in definitions and examples. Typically, the melting of rocks is caused by one or more of three processes. Students have learned that there are three different types of rocks, each of which possesses different characteristics. They answer questions about each type of rock and the rock cycle. Metamorphic rocks form when the buried rock is changed under high temperature and pressure. Free powerpoint templates page 34 clastic sedimentary rock. When the magma reaches the earths surface and turns. Characteristics of igneous rocks most igneous rocks are very hard made of crystals layering is not common in igneous rocks metamorphic rocks sedimentary and igneous rocks can become buried deep in the earths crust. These types of soil have different characteristics meaning they are used for varied reasons.
Types of rocks and their properties pdf download geography. Sep 23, 2012 for the love of physics walter lewin may 16, 2011 duration. For the love of physics walter lewin may 16, 2011 duration. We tie the three major rock groups together in the rock cycle, a simplified view of the. Each type is based on the conditions under which those rocks formed. Rocks and minerals unit the science zonewhere everyones a. Three types of rocks sort sedimentary, igneous, metamorphic. Igneous rocks are formed as a result of cooling of magma. It comes from deep in the earth where magma is formed.
But even a small rock you find in your yard is pretty amazing. What is a rock that forms when existing rock is changed by heat and pressure beneath earths surface called. The geology toolkit helps explain the three main types of rock. Through a slideshow, draw it activities, open ended questions, and videos, students learn about the three types of rocks. At lower temperatures, the branches merge and we obtain the minerals common to the felsic rocks orthoclase feldspar. This geology video explains how igneous, sedimentary and metamorphic rocks are formed, how to identify a rocks type and how the rock. After all, most rocks have been around for millions of years. Jul 31, 2019 some common rocks can be scratched with your fingernails such as shale, soapstone, gypsum rock, and peat. A sort activity using the three types of rocks, sedimentary, igneous, and metamorphic. Rocks fall into three classes according to their origin. Free powerpoint templates page 33 clastic sedimentary rock formed when fragments andor sediments of preexisting rock are compacted or cemented together.958 1278 434 31 1577 667 693 1231 1110 861 1291 1280 804 605 590 377 1514 651 1220 1401 2 485 436 787 117 436 301 911 1519 1264 582 829 556 699 1018 1035 1451 1147 1464 516 1259 1442