Students today played Rockin’ Connect Four as a review of rocks and the rock cycle. We corrected it in class and turned it in.
There will be a test on Thursday on rocks and minerals. Tomorrow we will be reviewing for the test!
8th Grade
Metamorphic rocks
Greek Meta-change Morphos-shape
M.R. rock whose structure, texture or composition have change
can be changed by heat and or pressure or both
depth 2 km
texture- foliated- minerals are arrange themselves in bands or planes ( striped)
non-foliated – minerals are not arranged in bands
recrystalization-change in size or mineral
contact metamorphism- occurs near igneous intrusion
1. magma moves thru the crust the magma shears surrounding rock and changes it.
2. some minerals are changed into other minerals
3. Greatest- change takes place where magma comes in direct contact with the rock
Regional Metamorphism- large area
1. pressure builds up below other rock formations
2. large pieces of Earths crust collide with each other
minerals change into a new minerals carbon/graphite turns into diamond.
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7th Grade
For Monday:
Reading stations on adaptions of different species of animals, 8 total. Please come during advisory to make up work.
Today we talked about graphing results for Science Fair projects. We started our project on mimicry and camouflage.
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8th Grade
Igneous Rock-Today’s Notes
Igneous- Latin for Fire
Form ?- Forms when magma-hot, liquid rock cools and solidifies.
Cools-Cools like water freezing complex mixture – different melting points.
_______Igneous Rocks__________________________________
Extrusive – outside Intrusive- inside
where magma erupting Intrudes on existing rock
Near Volcanoes Coarse grained
cool- quickly Cool Slowly
makes crystals small or no crystals large, visible crystals
these can flow from a volcano Pluton-irregular shaped body
fissure- crack in the earth Batholith- largest area of intrusive rock
called also a vent Stock- smaller then Batholith
example in Hawaii Pu’ u o’o vent. Sill- runs parallel to rock layers
Can flow under water Dike- intrusion cut across existing rock
lava types
1. A’a
2.Pahoehoe-ropy like
3.Pillow Lava
7th Grade
1.Finish Close Reading from yesterday about Reindeer adaptations. If you were absent yesterday please come to class to get a copy of magazine. All paragraphs in article need a sticky note with key points and summary, due today.
2. Power point Adaptations of Reindeer to their environments guided notes 1-7 need to be filled out.
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8th Grade
1.Rock Cycle picture due Friday.
2.Notes Rock Cycle
Rock- Solid mixture, naturally occurring of more than 1 minerals and organic matter.
Process of rock forming- Rock Cycle: New rock forms from old rock. Recycling
Value of Rock- Humans used rock for tools building
Pyramids-limestone
Granite-building/counter tops
Geological process- weathering-water, wind, ice or heat break down a rock
Erosion-sediment moved from its source water, wind, gravity ice.
Deposition-sediments are deposited putting the sediments somewhere
Heat and Pressure- sedimentary rocks can go thru heat and pressure turn into a metamorphic rock
Uplift and rock cycle-many pathways for a rock to follow.
Rocks divided into 3 groups: Sedimentary, Igneous and Metamorphic
Texture-Size, shape and position of the grains that make up a rock- fine grained, medium grained
Composition-minerals a rock contains.
3. Answer questions page 35, 1-10.
8th grade -Feb. 3
Today students took a quiz and mined for “ore”. There is a worksheet along with this activity but we will be finishing it tomorrow in class.
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7th grade February 3
Today students are learning about the structure of DNA. There was an in class lecture along with notes about this.
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8th grade-Jan 31
On Friday we went over the answers to the Determining a Mineral Lab. This was handed in as an assignment.