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Rocks and MINERALS I - Contenido educativo
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Maya nos explica el tema de ROCKS and MINERALS de natural Sciences para cuarto de primaria del colegio San Pablo
Hello, Cuarto. Today I will be reading Unit 4 of Social Sciences about rocks and minerals.
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I hope you are all well and healthy. Don't mind me if I'm turning my head, it is simply to read.
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And now I will begin.
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Unit 4, Rocks and Minerals. Objectives. In this unit you will learn about minerals and their properties.
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Different types of rocks and how they form. The uses of rocks and minerals.
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1. This is sulfur. It's a mineral. Minerals are substances that occur naturally on earth
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and in other places in the universe. These are rocks. Rocks also occur naturally.
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They're made of different minerals and fragments of other rocks.
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3. Some rocks contain material from dead animals and plants. Fossils are preserved
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remains of the material and can be seen in some types of rock. Four, lava is hot liquid rock that
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comes out of a volcano. Some rocks form when lava cools on the earth's surface after a volcanic
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eruption. Five, calcium is a mineral that can be found in lots of foods such as yogurt, cheese,
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and beans. It's an essential mineral for all living things. This, six, this is a quarry where
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rock is mined from the earth's surface. We use rock as a building material, for example, to make
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roofs, walls, floors, and roads. Let's go rock hunting. Minerals. Have you ever seen any minerals?
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Where? Read and think. One. Read and find out. What are the four properties of minerals?
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B. Name a hard and soft mineral. Minerals are inorganic substances that occur naturally on or
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under the earth's surface. They can be pure elements or compounds of one or more elements.
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All minerals have a crystal structure. Each mineral has a different composition and a unique
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structure. This gives each mineral its own color, crystal structure, luster, and hardness. So what
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are the four properties of minerals? Color, crystal structure, luster, and hardness.
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Mineralogists use these properties to categorize minerals. So mineralogists are people who study
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rocks and minerals. So let's think of the 10 minerals that are written here. Calcium, gold,
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diamond, sodium, sulfur, graphite, quartz, cobalt, talc, and mica. And guess what? I have
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an example of mica here. I don't know if you can see. We'll learn about it soon enough. Color.
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Color. Minerals are different colors. Some minerals such as sodium and calcium are white
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and others such as mica and graphite are gray. Many minerals are bright colors. Sulfur is yellow.
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Quartz can be pink and cobalt is blue. Crystal structure. Minerals have different shaped crystals.
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For example, sodium crystals are square. Quartz crystals have six sides.
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Mica crystals are flat sheets and calcium crystals are sharp.
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Luster. Minerals react differently to light. Some reflect a lot of light and look shiny.
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For example, gold and diamonds. Others reflect less light and look dull.
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for example, graphite and talc. Hardness. The hardness of a mineral is its resistance to
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scratching. Scratching is scratching. Hardness is determined using the Mohs hardness scale,
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which you all have in your book and is also in the presentation that
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teacher Beatriz should have sent you. It measures hardness based on whether we can scratch a mineral
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with another harder mineral, a knife, our fingernails, or other material. Some minerals
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are very hard. They're difficult to scratch. For example, diamond has a 10 because it can't be
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scratched by another mineral. Other minerals are soft. Talc has a 1 because it's easy to scratch
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it using our fingernails. That is a very soft mineral. Rocks. Do you think there are rocks
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on the moon? Hmm, that's a good question. Read and think. One, read and find out how these types
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of rocks form. A, igneous rock, B, sedimentary rock, and C, metamorphic rock. The lithosphere
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is the solid outer layer of the earth. It's made up of the crust, which is solid rock,
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and the upper part of the mantle.
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So core, mantle, crust, where it's in the mantle,
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where it's hotter and the rock is more fluid.
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Rocks are made of one or more minerals, right?
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So they're kind of a compound.
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- Idioma/s:
- Autor/es:
- Beatriz
- Subido por:
- Beatriz C.
- Licencia:
- Reconocimiento - No comercial
- Visualizaciones:
- 76
- Fecha:
- 16 de marzo de 2020 - 21:25
- Visibilidad:
- Público
- Centro:
- CP INF-PRI SAN PABLO
- Duración:
- 06′
- Relación de aspecto:
- 16:9 Es el estándar usado por la televisión de alta definición y en varias pantallas, es ancho y normalmente se le suele llamar panorámico o widescreen, aunque todas las relaciones (a excepción de la 1:1) son widescreen. El ángulo de la diagonal es de 29,36°.
- Resolución:
- 848x480 píxeles
- Tamaño:
- 55.96 MBytes
