Activity 6: Volcanic History of
your Community
DO NOW: 10/25/10
Make an entry in the notebook
• Activity 6: Volcanic History of your
Community pg 927
• Make a heading Think about it and do the
question
• Make another heading investigate
Rock cycle
Investigate
Part A: Rock Samples (DO NOT USE THE PICTURES IN
THE BOOK!)
Use this key to the rock numbers in your answers:
9 – Breccia
53- Pumice
61- Rhyolite
47 or 49- Obsidian
30- Granite
37- Andesite
76 – Welded Tuft
7 – Basalt scoria
6 – Basalt
When part A asks you to organize the rocks be sure to
write down the NAMES of the rocks
Investigate
Part A: Step 2
a) and b) Look at the mostly local rock collected
around our community (Washington State)-
make a table and describe your rock
Sample # Size of grains color
volcanic? anything else?
#1
Be ready to share out your rock and write down the other
rock characteristics
10/26/10
• DO NOW: What kind of rock was mostly
blown out of the Mount saint Helens big
eruption at first?
• Agenda
• Do part B of the investigation, go over
digging deeper.
• Notebook check set up.
Geological Time scale
The age of most
rocks are reported
as a nameLook at time span
to see about how
old the rock is.
For example: I
found some
basalt from the
miocene epochwhich is 5 to 23
million years old!
Investigate
Part B: Geological Maps
• step 2: Use the state map to look for patterns – by
answering these questions
• a. What is the pattern in terms where the older vs. newer
rocks are
• b. where are the volcanic rocks vs. the
intrusive/metamorphic/sedimentary rock?
• c. what is the primary feature of the puget sound?
• for step 3a- skip and leave several lines we will go back
and do this one together.
• For step 4a go back to the state geological map
Step 3a we do together
• using the list of volcanic rocks from part A
compare using the website found on the
classroom calendar (or use this link
http://home.comcast.net/~wa_geology/ind
ex.html?
• Go to one of the volcanoes and look for
volcanic rocks!
• Find and list least 3 rock formations with
the rock names from Part A and complete
part 4a).
(look at geological time handout provided for
age of the rocks!)
If teachers do not have access or
time to go to the website
• Here are some screen shots of volcanic
rocks on Mount Rainier for Activity 6
Mount Rainier Area
Mount Rainier Area
Mount Rainier Area
Mount Rainier Area
Do now 10/27/20
This is a file photo of
Mount Merapi, Indonesia.
It is a stratovolcano that
is erupting now. Look
very carefully, describe
any possible hazards you
see and how to reduce
the hazard.
YOU MAY NEED TO look
closely !!!!!
Do now 10/27/20
•
•
•
•
Volcanic Villages on Merapi
Photograph by John Stanmeyer, National
Geographic
Carving its slopes with steppes, farmers have set
up croplands and villages as far up Mount
Merapi's ridges as possible (file photo). The
attraction of Merapi's rich volcanic soils is
apparently greater than the threat of burning lava,
toxic gas, or smothering mud from one of the
word's most active and dangerous volcanoes.
Worldwide, volcanic soils cover only one percent
of Earth's land but feed about 10 percent of all
people, according to National Geographic
magazine. (Read more about Mount Merapi and
other Indonesian volcanoes.)
GOOGLE EARTH
Agenda
• Notebook check setup
• Go over CYU
• Do U and A pg 933 problems 1-2 sketch
your own copy of the diagram for problem
1 into your answer
• Do the Preparing for the Chapter
challenge pg 933
• Will be checked in your notebooks
tomorrow.
Notebook check #2
____ch14act3 Flows investigate Parts A and B
____ Ch14 act3 (U&A) #1-4
____ Prepping for the Chapter Challenge
____ pyroclastic flows videos
____ finish ch14act4 investigate
____ HW due ch14act4 CYU and Figure analysis
____ ch14act4 U and A question 1-4
____ cyu pg 932- 1-3
____ ch14act6 Investigate
9 total assignments, grade yourself 1-4
4= stamp, 3= late but done, 2=incomplete, 1= really
barely started
Agenda
• Go overU and A pg 933 problems 1-2
sketch your own copy of the diagram for
problem 1 into your answer
• Go over the Preparing for the Chapter
challenge
• Work on concept mapping of vocab.
• Notebook check
•