Show:
Rock Cycle
Fossils and Fossil Record
Igneous
Sedimentary
Metamorphic
100
All rocks were this kind of rock first.
What is IGNEOUS?
100
What is a fossil?
A fossil is the imprint or actual crystallized form of a plant or animal that lived long ago.
100
Ingeous rock is formed from __________ and _________ .
Ingeous rock is formed from LAVA and MAGMA .
100
Sedimentary rocks are formed from ________________.
Sedimentary rocks are formed from SEDIMENT.
100
Metamorphic rock is formed when other rocks are _________ and _____________ .
Metamorphic rock is formed when other rocks are HEATED and PRESSURED .
200
It is called a cycle because
It is called a cycle because THE ROCKS CAN BE RECYCLED OVER AND OVER EACH KIND OF ROCK CAN BECOME THE OTHER KINDS.
200
How are fossils formed?
Fossils are formed when a animal or plant died and rather than decomposing and becoming humus it lithified or it left an imprint in soil that then became a rock or the mold of the organism was filled in with rock.
200
Where do extrusive rocks cool?
Extrusive rocks cool above the earth, quickly.
200
What is weathering and erosion?
Weathering is the breaking up of rock and land forms. Erosion is the movement of rock bits.
200
Where do metamorphic rocks form?
Metamorphic rocks form along the edges of the earth's crust plates.
300
Explain how igneous rock can become sedimentary and metamorphic rock.
Igneous rocks can be weathered and eroded turned into sediment. The sediment gets deposited and lithified. Igneous rock can be heated or pressured at edges of the plates and become metamorphic rock.
300
How do sediments and fossils help us know about the age and history of the earth?
We know that for rocks to be eroded and lithified takes millions of year. Based on the fossils found in the layers of the earth, we know there were many kinds of plants and animals that lived long ago. They are no longer living. We can see how plants and animals evolved.
300
Where do intrusive rocks cool and what is one clue that a rock is extrusive?
Intrusive rocks cool below the crust, slowly. One clue is that crystals are visible.
300
True or False- Halite is a sedimentary rock. Explain why or why not.
True- Halite is a chemical sedimentary rock. It forms when sea water evaporates, leaving behind salt that then becomes lithified.
300
The root words of metamorphic mean : META = morph =
The root words of metamorphic mean : META = change morph = form
400
How can metamorphic rocks become igneous?
When the rock is melted - at plate edges- it becomes magma again... so when it cools it will be igneous rock.
400
What is amber?
Amber is fossilized tree sap.
400
What kind of igneous rock forms when lava contacts and cools in hot sea water?
Granite forms when lava cools in hot sea water.
400
What is an example of organic sedimentary rock? What is it formed from?
Coal - formed from dead plants and animals. OR limestone= formed from the shells of sea animals.
400
OOPS - random question... Soil is made up of ___________ and _______________.
Soil is made up of WEATHERED AND ERODED BITS OF ROCK AND MINERALS and HUMUS.
500
Draw the Rock Cycle .
The drawing must show the three kinds of rock :igneous, sedimentary , metamorphic. It must show that each can become the other by arrows.. It must also explain HOW each become the other.
500
Name the three kinds of fossils.
Cast fossils, mold fossils, true form fossils.
500
Which of the two main kinds of igneous rock is heavier basalt or granite?
Basalt is heavier. It forms oceanic crust.
500
What kind of metamorphic rock forms when limestone gets heated and pressured?
Marble is the metamorphic rock formed from limestone.