You need to choose a type of rock and then use the internet to find out:
1) is it sedimentary, igneous or metamorphic
2) some of its properties
3) where it occurs
4) what is is used for
5) one other fact of your choice about the rock.
Post your answers in the comments section (along with your name).
Please complete this by Monday the 6th of February.
:Gneiss:
ReplyDeleteit is a metamorphic rock.
It has a lot of minerals eg:abundant quartz or feldspar. it is also very hard but on some parts quite smooth.
it occurs all over the world but mostly in mountain ranges like the Rocky Mountains.
it is used for, roads, curbs and sometimes even buildings.
In gneiss, less than 50 percent of the minerals are aligned in thin, foliated layers.
by Katie Purnell...
Limestone
ReplyDelete1.Limestone is a sedimentairy rock.
2.Limestone has good hardness,and has few porous areas.
3.Limestone is not found everywhere. It only occurs in areas underlain by sedimentary rocks.
4.Limestone could be the one rock that is used in more ways than any other rock. Most limestone is crushed and used as a construction material.
5.The city of Kingston in Ontario, Canada is called the "Limestone City" because so many buildings were built with limestone.
Limestone.
ReplyDelete1. Sedimentary.
2. strong and they stand up well.
3. evaporation in caves.
4. Construction material
5. There are differant varieties of limestone.
Alex.collins
Limestone is a sedimentary rock. Most of them are found in shallow water areas. Limestone is forming in the Caribbean Sea, Indian Ocean, Persian Gulf, Gulf of Mexico, around Pacific Ocean islands and within the Indonesian archipelago. Most limestone is crushed and used as a construction material. It is used as a crushed stone for road base and railroad ballast. It is used as an aggregate in concrete. It is fired in a kiln with crushed shale to make cement. Limestone has many other uses. Powdered limestone is used as a filler in paper, paint, rubber and plastics. The properties are strong and dense with few pore spaces. These properties enable them to stand up well to abrasion and freeze-thaw.underlain by sedimentary rocks. Limestone is needed in other areas and is so important that buyers will pay five times the value of the stone in delivery charges so that limestone can be used in their project or process.
ReplyDeleteGRANITE
ReplyDelete1. igneous
2. Earth's crust where it had seeped in during the geologic periods.
3. construction
4. you can use it for tables and work tops
5. it has big crystals.