Download Rock Layers

01/20/11
Rock Correlations
#3
Entry Task
Finish rock
correlation
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Rock Correlations
#3
• Rock Layers: flat deposits of rock (like layers
in a cake) that extend over a large area
• Correlate: to find a relationship or connection
between two or more things
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Rock Correlations
#3
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Rock Correlations
#3
What characteristics do you notice about these sedimentary rock
types?
Limestone
.
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Sandstone
.
Shale
.
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
•
Rock Correlations
#3
Limestone: sedimentary rocks containing calcite.
–
Calcite is found in marine shells.
• Sandstone: sedimentary rocks made out of
particles of sand, cemented together.
• Shale: smooth sedimentary rock made of fine clay
particles. Shale has splintery layers and often
contains plant fossils.
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Rock Correlations
#3
Lab Safety
-Follow directions
-Proper and careful use of materials for intended purpose
-Safety equipment
eyewash demonstration
-Keep materials away from your face
We are working with dilute hydrochloric acid, HCl
HCl is dangerous if in contact with eyes or ingested
-Wear goggles
-Gently use a small amount
-Never point bottle at anyone
-Clean up carefully
-WASH HANDS, then remove goggles
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Rock Correlations
#3
-Demonstration of acid test
Rocks on paper towel (numbers down)
Gently wipe off an area on the rock
Gently put one drop of acid on a rock
Observe and record your observations (rock observation table).
Dry the rocks and table.
Wash hands, return goggles
Working with acid
-Wear goggles
-Gently use a small amount
-Never point bottle at anyone
-Clean up carefully
-WASH HANDS, then remove goggles
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Rock Correlations
#3
TASK:
-Perform acid test and record observations
-Clean up & wash hands
-Remove goggles and place in box
Lab Safety
-Follow directions
-Proper and careful use of
materials
-Safety equipment
-Keep materials away from your
face
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Working with acid
-Wear goggles
-Gently use a small amount
-Never point bottle at anyone
-Clean up carefully
-WASH HANDS, then remove
goggles
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Rock Correlations
#3
Calcite
• The material in the rock that reacted with the acid was
calcite.
• Calcite is composed of Calcium Carbon and
Oxygen.(CaCO3)
• When acid reacts with calcite, carbon dioxide (CO2) gas is
given off, hence fizzing.
• Calcium carbonate makes up 15% of the earth's sediments.
• It is present in limestone, marble, marl, travertine and tufa and is
the main ingredient in the shells of invertebrates.
Today’s Plan:
-Rock Correlation
-Vocab
-Acid Test
Learning Target:
- I can create a model showing the rock layers
in the Grand Canyon.
01/20/11
Rock Correlations
#3
These are pieces of Kaibab limestone that contain fossils of sea creatures!
Can you see the fossils! Carefully observe the pictures and your sample of
Kaibab limestone.
The Kaibab Limestone in the Grand Canyon is 8000 feet above sea
level.
~How can you explain fossils of sea creatures at that elevation?
~What evidence do you have to support your claim?