1 / 22

CLASSIFICATION IS IT A ROCK OR A MINERAL? BECOME A ROCK HOUND

CLASSIFICATION IS IT A ROCK OR A MINERAL? BECOME A ROCK HOUND. Is it a rock or a mineral?. Click each picture to find out. Rocks. Rocks are a solid matter made up of minerals. Rocks are found in large quantities in the earth's crust. They are formed by heat or pressure. Next. Back.

cantua
Download Presentation

CLASSIFICATION IS IT A ROCK OR A MINERAL? BECOME A ROCK HOUND

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CLASSIFICATION IS IT A ROCK OR A MINERAL? BECOME A ROCK HOUND

  2. Is it a rock or a mineral? Click each picture to find out.

  3. Rocks • Rocks are a solid matter made up of minerals. • Rocks are found in large quantities in the earth's crust. • They are formed by heat or pressure. Next Back

  4. Minerals • Minerals are inorganic materials forming naturally in the earth. • Minerals are usually categorized by their property. • Minerals usually have crystal structure and a hardness by chemicals. Back Next

  5. Is it a rock or a mineral? • Clues: • Forms from layers of sand-sized grains in the earth’s crust

  6. It is a rock called Sandstone and is made up of minerals such as Quartz.

  7. Is it a rock or a mineral? • Clues: • Forms crystals although not very large ones

  8. It is a mineral called Talc. Talc has a soapy feel and can be scratched by a fingernail.Used in powder and many other things.

  9. Is it a rock or a mineral? • Clues: • Forms from lava from a volcano

  10. A rock called Obsidian formed from cooled lava and forms into glass.

  11. Rocks are formed in 3 different ways.

  12. Click each picture to learn about the three kinds of rocks. metamorphic sedimentary igneous

  13. Sedimentary Rocks • For thousands, even millions of years, little pieces of our earth have been eroded--broken down and worn away by wind and water. These little bits of our earth are washed downstream where they settle to the bottom of the rivers, lakes, and oceans. Layer after layer of eroded earth is deposited on top of each. These layers are pressed down more and more through time, until the bottom layers slowly turn into rock. Back

  14. Metamorphic Rocks Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you examine metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are. Back

  15. Igneous Rocks Igneous rocks are called fire rocks and are formed either underground or above ground. Underground, they are formed when the melted rock, called magma, deep within the earth becomes trapped in small pockets. As these pockets of magma cool slowly underground, the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's surface. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground. Back Next

  16. What type of rock is it? • Clues: • Find lots of these rocks in Hawaii near volcanoes.

  17. An igneous rock called Pumice formed from cooled lava. It is so light it will actually float. It is used in soaps.

  18. What type of rock is it? • Clues: • This rock may have once been sandstone or granite.

  19. A metamorphic rock called Gneiss (pronounced “nice”). Usually made up of many layers of other rocks and minerals.Used for paving & building.

  20. What type of rock is it? • Clues: • Could be found at the bottom of the ocean where it was formed.

  21. A sedimentary rock called Limestone formed from a mineral called calcite at the bottom of oceans or rivers. Can be used for concrete.

  22. Now, let’s test your skills as a Rock Hound. Click the picture below to go to a web page that allows you to create a word search using terms you have learned from studying about rocks and minerals.

More Related