Rocks: Hard, Soft, Smooth, and Rough by Natalie M. RosinskyThis book has terrific illustrations and a simple text that discusses the formation and features of rocks. With a nice Rocks Chart in the back, students can see how to classify rocks by kind, color, what it feels like, and its uses. Offered in a Spanish edition as well.Grades K-2.
Curriculum Connection: Science Standard 3.1: Earth’s materials can be compared and classified based on their properties. Before reading the rock book to students, I would begin by modeling some essential questions I would like students to be able to answer during our study, such as How do rocks form and what types are there? How are rocks used? and Who studies rocks and why? An empty gathering grid would be ready to go on the computer and projected on the screen in front of us. As we read the information, we can record together, typing the source and the page numbers as we go. If students have access to science kits, there should be some rocks to sort, and students could work in teams to fill in a chart like this of their own. To check understanding, students can bring a rock in and place it on a display table, underneath the appropriate section labeled igneous, sedimentary, and metamorphic. (There should be additional rocks available for those that do not bring one in, so they can also demonstrate their knowledge.)It would be fun to let students save their milk cartons, fill with sand, and a ½ glue/ ½ water mixture and let dry several days to make a sandstone brick!
Citation: Rosinsky, N. (2004). Rocks: Hard, soft, smooth, and rough. Picture Window Books.
Reviews and Awards: Science and Children (NSTA) 03/01/05
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MECHANICS OF HARD SOILS AND SOFT ROCKS
Hard soils and soft rocks HSSR are transitional materials, in the sense that their engineering properties may be altered drastically when they are subjected to environmental weathering effects. They are found worldwide and typical examples include mudstones, claystones, shales, tuffs and stiff clays. These materials are responsible for a number of engineering challenges due to the fact that their strength, stiffness and volume can change substantially when they are subjected to environmental actions such as stress relief, cyclic wetting and drying, and thermal variations. These phenomena are known to have a detrimental effect on the behaviour of clayey rocks, leading to instabilities of earthworks or infrastructure. This project focusses on:. Figure 1. Water Retention Curve for natural and weathered claystone left.
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All these stones are pieces of larger rocks, and most of them are made of hard materials. However, not all the rocks are hard. Soft rocks do exist. For example, soapstone is a type of soft rock. It can be easily scratched by your fingernail, and has been used to make ornamental and practical objects for thousands of years, including sculptures, bowls, countertops, etc.
Here we will learn about rocks, soils and minerals. These are made by breaking up a hard rock called granite. Some rocks are soft. a reason for soft rocks being soft -(why are they soft??) rather than giving just examples of soft rock.
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Check out the All Soft Rocks here. Some rocks have less hardness and are called as soft rocks. The hardness range lies in between 1 — 3. Soft rocks are mostly used for making small monuments and sculptures as they are easy to carve. We are providing you with a segregated list of List of Soft Rocks.
Coastal soft rock cliffs are some of the most spectacular, but neglected, wildlife habitats in the UK. They are home to bees, butterflies and other incredible invertebrates such as the handsome Cliff tiger beetle Cylindera germanica. Soft cliffs provide these small animals with food, shelter, and places to nest. Soft cliffs are often abundant in wildflowers c Andrew Whitehouse. Coastal soft cliffs are sea cliffs in rocks that are poorly resistant to the natural processes of erosion that shape our coasts.
Here we will learn about rocks, soils and minerals. When we go out for a walk, let us look at the stones around us. We see there are big stones, small stones and tiny ones. We find some stones are rough or some are smooth, even the stones can be pointed and sharp. Sometimes we also find some stones that shine and glitter. All these stones are pieces of larger rocks.