Show:
Earth's Layers
Igneous Rocks
Metamorphic Rocks
Sedimentary Rocks
Rock Cycle
100
Why is an apple used as a model of the Earth?
The skin of the apple is thin, and so is the crust.
100
What are the two types of igneous rocks?
INtrusive or EXtrusive
100
Which two things are needed to form metamorphic rocks?
Heat and pressure
100
What observable property do sedimentary rocks have?
Clear, distinct layers.
100
Ms. Perkins made rock candy by melting sugar, water, and food coloring in a hot pan. Then she let it cool on a baking sheet. What type of rock formation is this similar to?
Igneous rocks.
200
Which layer includes the crust and upper mantle?
The lithosphere
200
How are Igneous rocks classified (be specific).
They are classified by how they are formed: the cooling of lava or magma. If it cools inside the Earth, it is intrusive. If it cools outside the Earth, it is extrusive.
200
When metamorphic rocks are formed from pressure, where might the pressure be coming from?
Gravity, top layers pressing down, tectonic plates shifting/moving.
200
Which three processes form sedimentary rocks?
1. Deposition (layering) 2. Compaction (pressing together) 3. Cementation (minerals glue together)
200
Trey was really hungry so he decided to make granola bars. He crumbled graham crackers and pressed a layer in the bottom of the pan. He added a layer of peanut butter, then peanuts, and then chocolate frosting on top. Which rock formation is this most like?
Sedimentary rocks.
300
Which layer has the most plasticity?
The asthenosphere.
300
How would Cheyo be able to classify an igneous rock as intrusive?
He would see very large crystals.
300
How can an igneous rock transform into a metamorphic rock?
It must be pressed down into the Earth and changed due to heat and pressure.
300
What causes deposition?
Weathering or Erosion
300
An igneous rock is pushed deep into Earth. Though it does not melt, it does change. What type of rock is it now?
Metamorphic rock
400
Which of the following is a limitation of drawing models of the Earth's layers: A. The size of the Earth B. The materials C. The state of matter of the layers D. The scale of the layers
D. The scale (It will not be perfectly to scale)
400
How would you identify a rock as extrusive igneous?
It does not have large crystals, but very small crystals, and no distinct layers.
400
How could a sedimentary rock change into a metamorphic rock?
It must be pressed further into the Earth and changed due to the increased heat and pressure.
400
How can a metamorphic rock change into a sedimentary rock?
The metamorphic rock must change into sediments due to weathering and erosion. Then deposition, compaction and cementation.
400
At which layer of the Earth does most of the rock cycle take place?
The crust.
500
Describe the relationship between the lithosphere and the asthenosphere.
The lithosphere includes the crust and upper mantle, and rests on top of the asthenosphere. The lithosphere is what forms the tectonic plates. The asthenosphere is a semi-solid with plasticity and is in the upper mantle, below the lithosphere.
500
If a metamorphic rock is changing into an igneous rock, what steps must be taking place?
The rock must be melting down to form magma, and the magma must cool down and crystallize(harden).
500
If Ms. Perkins applies pressure and heat to a rock, will it change into a metamorphic rock immediately?
NO.
500
Sedimentary rocks can be seen at which American landmark?
The Grand Canyon
500
Can any other rock transform into any other kind of rock?
Yes! That's why it is a cycle.