22 thoughts on “Rocks Rock!

  1. Igneous: An igneous rock is a type of rock which forms from magma. It can form either above or below ground. Once the magma cools down it solidifies and becomes rock. This is how and igneous rock is formed.

    Sedimentary: A sedimentary rock is formed in lakes, rivers or streams where floating sediments land on the ground and layers start building up. The technical term for these layers is called strata. Over many years these layers become solid and turn into rock.

    Metamorphic. A metamorphic rock is created from another rock that have changed over time due to extreme heat or a chemical reaction. For example shale turns into slate, sandstone turns into quartzite and limestone turns into marble. Erosion helps these rocks become exposed to the surface.

  2. Igneous: An igneous rock is a type of rock that is formed by a hard molten rock called magma. It can be formed under or above the ground.Granite is an example of an igneous rock.

    Sedimentary: A sedimentary rock are formed by drifting from rivers and joins on to other rocks. Sedimentary rocks covers up 75% of the Earth’s surface.

    Metamorphic: A metamorphic rock is formed by another rock.

  3. Hi 3/4LB,
    It’s me, Marco. This is my explanation about rocks. 😀

    Igneous

    Igneous rocks are either intrusive or extrusive.
    Intrusive rocks are jammed into a cave or something similar. Examples: Gabbro, granite and diorite.

    Sedimentary

    Sedimentary rocks form by sediment hence the name. Sediment is a bunch of small rocks that fall to the bottom of the sea and fuse with sand or soil. Examples: Sandstone, limestone and shale.

    Metamorphic

    Metamorphic rocks are formed when extreme pressure or heat are put on to a rock. Metamorphic rocks are usually the prettiest of the rocks, as they are like amethyst and malachite, both beautiful.
    Examples: Sandstone-Quartzite, Shale-Slate,
    Grantite-Gneiss, Copper carbonate-Malachite.

    That’s it, so goodbye 🙂

  4. Hi its gemma,
    Igneous rocks
    It’s a rock that forms by magma. It can be formed under or above ground. The magma cools and hardens to make rock. Granite, diorite and volcanic rocks are only some examples of these types of rock.

    Sedimentary rocks

    They are formed when over millions of years stacked by other kinds of rock, leaves, dirt and more. 75 percent of the earth is covered in sedimentary rocks.

    Metamorphic rocks

    These rocks are formed from other rocks by extreme pressure, heat or more.

    that’s all
    gemma

  5. hi,
    Igneous rock
    It’s formed under or above ground. It’s when the magma cools and forms rock.

    sedimentary rocks

    They are formed by lots of layers of leaves dirt and pebbles. They squish together for millions of years and form it.

    Metamorphic rocks

    These rocks are formed by other rocks due to high pressure, extreme heat and more.

    gemma

  6. Hi 34LB,

    I am here to tell you about rocks. There are three types of rocks. They are called igneous, sedimentary and metamorphic.

    Igneous Rock:

    Igneous rocks are formed under and above ground. Under ground they form by when magma is traped in small pockets and cools to make a rock. When they form above ground the lava cools and makes a rock.

    Sedimentary Rock:

    Sedimentary rocks are formed when other rocks and animal droppings make pressure and then it make a rock. Did you know that 75% of the world is covered with sedimentary rocks.

    Metamorphic Rock:

    Metamorphic rocks are formed when another rock has had heat or pressure posed on it over time.

    That all from me,

    Bye 34LB Roman out

  7. Igneous: An Igneous rock is formed by hot magma that comes from volcanoes, once it cools down and becomes solid rock.
    A common example is granite.

    Sedimentary: A Sedimentary rock is made up of layers of sand, pebbles and mud squashed together over time. They are found near sea, lakes, rivers and deserts. An common sedimentary rock is sandstone.

    Metamorphic: Metamorphic rocks are formed by pressure and heat underground. They are forced up to the surface and never a liquid. An example is marble.

  8. Igneous rocks are formed underground from magma which is also known as lava. Small air pockets form and the rock solidifies. Then it is shot out of the volcano and sent to earth.

    Sedimentary rocks are formed by compressed layers of sand, leaves and dirt over thousands of years. Sedimentary rocks are either fossilised leaves or animals.

    Metamorphic rocks are rocks which have been changed by heat and pressure. No liquid is involved in this process. Marble is a type of metamorphic rock.

  9. Julian .V
    Igneous:
    An Igneous rock is formed by hot magma from volcanos. When a volcano erupts, the magma flies out and goes onto the ground. The magma, which is also known as lava cools, then forms into igneous rock. Granite is one type of igneous rock.

    Sedimentary:
    Sedimentary rock is formed by sediments like plants, minerals and animal matter that falls into layers and then gets pressed together to form a rock over a long period of time. This normally happens at the bottom of lakes and oceans. Over time the wind blows and the layers of the earth build up and you can see all the thick layers of the earth that has formed. Sandstone and limestone are examples of sedimentary rock.

    Metamorphic:
    Metamorphic rocks are rocks that change in form once it is exposed to very hot temperatures (above 150 degrees C), and pressure underneath the ground. The heat and pressure of rock layers above it causes the rock to change the way it looks. Marble and slate are both types metamorphic rock.

  10. Igneous:
    An Igneous rock is formed by hot magma from volcanos. When a volcano erupts, the magma flies out and goes onto the ground. The magma, which is also known as lava cools, then forms into igneous rock. Granite is one type of igneous rock.

    Sedimentary:
    Sedimentary rock is formed by sediments like plants, minerals and animal matter that falls into layers and then gets pressed together to form a rock over a long period of time. This normally happens at the bottom of lakes and oceans. Over time the wind blows and the layers of the earth build up and you can see all the thick layers of the earth that has formed. Sandstone and limestone are examples of sedimentary rock.

    Metamorphic:
    Metamorphic rocks are rocks that change in form once it is exposed to very hot temperatures (above 150 degrees C), and pressure underneath the ground. The heat and pressure of rock layers above it causes the rock to change the way it looks. Marble and slate are both types metamorphic rock.

  11. Igneous
    A igneous rock forms from hot Magma which comes from a volcano.It can form underground or above ground. When the magma cools it becomes a rock. A example of a Igneous rock is Granite.

    Sedimentary
    A sedimentary rock falls to the bottom of the ocean and gets mixed with sand or oil.
    Fact: Sedimentry rocks are covered 75% of the earths surface.
    Examples: Sandstone and limestone.

    Metamorphic
    A metamorphic rock is formed from another rock that has changed over time from extreme heat and pressure. For example shale turns into slate.

    • Wow all of this information about rocks is very interesting now I have learnt something about rocks myself. Great job 3/4LB
      from Katie

  12. Hi it is Emily,

    Igneous rocks:Igneous rocks are formed by magma.On some rocks small air pockets are shown from the volcano eruption. When it happens the rock flies out and because it is going so fast the air goes threw it which creates air pockets.Also Igneous rocks are made from granite.

    Sedimentary rocks:Sedimentary rocks are formed by layers of sand, pebbles and dirt.It is formed at lakes or oceans.Sedimentary rocks can be either fossilised leaves or animals.Sedimentary rocks are sandstones.

    Metamorphic rocks:Metamorphic rocks are formed deep deep under ground.It is formed by other rocks that change over time from the heat and pressure.Liquid is not involved in it.Metamorphic rocks is a type of marble.

  13. Igneous: An Igneous rock is formed by hot magma. On most Igneous rocks there are air pockets caused from lava. When the volcano erupts all the rocks fly out so fast that the air goes threw them and this means the rocks will have air pockets.

    Sedimentary: Sedimentary rocks are formed by layers of sand, pebbles and dirt. About 75% of the earth’s surface is covered in sedimentary rock. Sedimentary rocks are sandstone.

    Metamorphic: Metamorphic rocks are formed from another rock over the past due to weather, heat and pressure. Marble and slate are two popular metamorphic rocks.

  14. My understanding of rocks

    Igneous
    An Igneous rock is formed from magma in a volcano. It can be made under ground or above ground when it cools. Eventually it becomes solid rock e.g. Granite.

    Sedimentary
    A Sedimentary rock is formed at the bottom of the ocean, rivers and creeks. It is made when floating sediments sink to the bottom of the water. Over time these sediments form layers and transform into a rock e.g. Sandstone.

    Metamorphic
    A Metamorphic rock is formed when extreme pressure or heat is forced on it. I think that Metamorphic rocks are the most beautiful rocks e.g. marble.

    Georgia

  15. Hi it’s Mia

    An igneous rock is a rock which is formed by lava in a volcano and when the volcano erupts the rock is pushed out and solidifies and is formed into a rock.

    A sedimentary rock is formed in water and floating sediments and dead animals which over time turn into a fossilised rock which inside can hold a animal from a million years ago .

    A Metamorthic rock is formed when a limestone is melted by lava and over time solidifys the trapped air wholes that were inside of the rock turn into wholes in the rock.

  16. Igneous
    igneous rocks are made in a volcano. The volcano erupts because of the pressure and the heat of the magma. When the magma cools underground or above ground it becomes an igneous rock.

    Metamorphic
    A metamorphic rock is a rock with lots of pressure. The pressure causes the rock to change and form again. It is created by rock erosion helps the rock stay on the surface.

    Sedimentary
    A sedimentary rock is a rock that is formed under water. It is formed in lakes, rivers and oceans. Over time it starts forming bigger and bigger with sand, pebbles, stones and minerals.

  17. Igneous: An Igneous rock is a rock that has formed from magma. when a Igneous rock is formed underground when magma gets trapped in pockets then cools and turns into rock. When a Igneous rock is formed on ground it is formed from magma again cooling and forming a Igneous rock.
    Metamorphic: A metamorphic rock is formed from another rock when that rock changes from things such as magma and extreme weather.
    Sedimentary:A sedimentary rock is formed over millions of years when things like fossils and minerals fall to the bottom of lakes and rivers and over time it will form a rock.
    Sammy

  18. Igneous: A igneous rock is a rock that is formed from magma. Magma comes out of volcanoes. As it gets pushed up it gets cooler. Igneous rocks usually have holes in them and that’s how you can tell that it is a Igneous rock.

    Sedimentary: A sedimentary rock is formed in water. It is formed by pressure under water. The pressure over many years forms a rock by being pushed together. A sedimentary rock is a sand stone or a limestone.

    Metamorphic: Metamorphic rocks are formed from both heat and pressure. It can also be formed from other rocks. An igneous or a sedimentary rock can become a metamorphic rock.

  19. I didn’t know that there were such things as igneous, sedimentary and metamorphic and that all rocks start out in these groups.

    Sedimentary rocks form at the bottom of lakes and seas for thousands and thousands of years. Dead plants and dead animals fall down on top of them and the water makes lot pressure that pushes it all together. Then the rocks can get washed up on the shore. I think these are the most interesting rocks because I am interested in fossils.

    Igneous rocks blow out of the top of a volcano when it erupts. A metamorphic rock is an igneous rock that has just fallen down even deeper and been squished together by pressure from the Earth.

    Bye!

    Angus

  20. Here is what I have learnt about rocks in class:

    Igneous: Some kinds of Igneous rocks are Obsidian, Granite and Basalt. Igneous rocks are formed from Magma.

    Sedimentary: Sedimentary rocks are stacked up in piles including Organic matter. About 75% of the earth is sedimentary rocks. Some kinds of sedimentary rocks are sandstone, limestone and shale.

    Metamorphic: Metamorphic rocks are formed by another rock from by water, wind and heat pressure. Some kinds of metamorphic rocks are gneiss, phyllite and quartzite.

  21. Hi, this is Oakley and this is my knowledge on rocks.

    Igneous: Rocks that have formed in volcanoes and have either cooled above the surface or in pockets of air inside volcanoes. An example is granite.

    Sedimentary: Rocks that have many substances like sand all clumped together over time. An example is sandstone.

    Metamorphic: Rocks that have formed in other rocks from pressure and heat underground. An example is quartzite.

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