Show:
Our World and the Rocks in it
The Rock Cycle
Rocks and the Crust
Epoly
Potpourri
100
What are the three types of rocks?
What is metamorphic, igneous, and sedimentary.
100
What is the rock cycle?
What is the rock cycle is the set of natural procesess that form, change, break down, and re-form rocks.
100
What kinds of rocks are in the Earth's crust?
What is there are igneous, sedimentary, and metamorphic rocks in the Earth's crust.
100
What layes beneath the Earth's thin layer of surface features?
What is molten and solid rock.
100
Which rock type is most commonly found at the Earth's surface?
What is sedimentary rocks.
200
How does coal differ from most rocks? What is coal made of?
What is coal is not composed of minerals. It is made of vegetation like grass, leaves, and fossils.
200
How do we form igneous rock, sedimentary rock, and metamorphic rock? Where does each kind of rock form within the Earth?
What is igneous rock forms when molten rock cools and becomes solid. It can form in the Earth's crust and inside the Earth. Sedimentary rock can form pieces of older rocks, plants, and loose material get pressed or cemented together. They form in the Earth's crust and mantle. Metamorphic rocks form when heat or pressure causes older rocks to change into new types of rocks. This happens in the Earth's mantle and crust.
200
Which type of rock is the most common in the Earth's crust? How much of the Earth's crust is made from these rocks?
What is igneous and metamorphic rocks are the most commonly found rocks in the Earth's crust.
200
How long does it usually take for a rock to experience significant change?
What is thousands to millions of years.
200
What are three kinds of metamorphic rocks, and how do they form?
What is quartzite, slate, and marble. Quartzite forms when sandstone becomes quartzite, slate forms when shale becomes slate, and marble forms when limestone becomes marble.
300
What is a rock?
What is a rock is a naturally formed soild that is usually made up of one or more types of minerals.
300
Take a look at the picture of the rock cycle on page 79 in your textbook. What do arrows pointing in two directions in the rock cycle mean?
What is this shows that rocks can form in either direction.
300
Which type of rock is the most common at the Earth's surface?
What is sedimentary rocks are the most common at the Earth's surface.
300
What type of rock is formed when heat or pressure changes older rocks?
What is metamorphic rocks.
300
Tell me three kinds of igneous rocks and how they form.
What is three types of igneous rocks are granite rocks, pumice rocks, and scoria rocks. Granite rocks form from slowly cooling pockets of magma under the Earth's surface. Pumice rocks form when lava cools quickly above ground, leaving small pockets of air in the rock. Scoria rocks form when lava cools quickly above ground, leaving little pockets of air in the rock.
400
Name two differences between rocks and minerals.
What is minerals have the same elements in the same proportions, while rocks may have different proportions of elements. Another difference is that only a few rocks contain one kind of mineral. Yet another difference is that minerals in a rock can be jumbled together to form different parts of a rock.
400
How are rocks classified?
What is they are classified by how they form.
400
Why do people use rocks for many different purposes?
What is rocks have many different uses because they last a long time and they can be beautiful.
400
Why are sedimentary rocks more common at the Earth's surface?
What is the process that forms sedimentary rocks occurs at the Earth's surface.
400
How can a sedimentary rock become a metamorphic rock?
What is you apply heat and pressure to the sedimentary rock and it becomes a metamorphic rock.
500
What is the difference between obsidian and most types of rocks?
What is obsidian does not contain any minerals. Instead, it is made when lava or magma cools down so fast that it forms a glass-like rock.
500
Name three kinds of sedimentary rocks and tell me how they form.
What is shale, which forms when clay is compacted together with pressure. Another rock is sandstone, which forms when small grains of quartz and feldspar are cemented together. A final sedimentary rock is limestone, which is made from calcite that comes from evaporated beds of water. Calcite is pushed together to form limestone.
500
How does the distribution of rocks in the Earth's crust reflect the rock cycle?
What is rocks that are more common in the Earth's crust have more ways of forming than rocks that are less common in the Earth's crust.
500
How is igneous rock formed?
What is it is formed when molten rock cools and becomes solid.
500
How does one type of rock change into another type of rock?
What is Natural processes change each type of rock into other types. Igneous rock is formed when molten rock cools and become solid. Sedimentary rock forms as pieces of older rocks, plants, and other loose materials get pressed and cemented into rock. Metamorphic rock forms as heat or pressure or both cause older rocks to change into new types of rock.