Topic Ch 1 Volcanoes
Objective Understand the interaction between volcanic activity and your
1 how many?
Standard Earth Science 3
Days in a year? _________ Weeks in a year? _______ Hours in a day? ________
Minutes in an hour? _______ Seconds in a minute?
Seconds in a year?
_______ =_______ = _______ = _______ = _______
2 what are volcanoes?
3 what debris comes out
of the volcano?
4 how do you classify
5 Where on Earth do
volcanoes occur?
Topic Volcanoes
Objective Understand the interaction between volcanic activity and your
1 Where are volcanoes
The global distribution of
2 USGS maps and map
3 Volcanoes beneath the sea
Volcanoes on land
4 Ring of Fire
5 Volcanoes at hotspots
Standard Earth Science 3
Lat = Equator
Long = Prime
3D NO 2D
U/A p.23 1-4 half sheet of paper
1. Contour Intervals 100 meters, spacing between lines
2. A) gentle slope – spaced contour lines
b) Steep slope – closer contour lines
c) Vertical slope – near overlapping contour lines
d) Crater – center circle has three lines pointing in or dotted
3. Shade in areas of the volcanoes that could possibly be covered in the lava flow
Remember draw the width according to topography
a) Draw topo map like (2 a)
b) Draw topo map like (2c)
Period 1,2,5,6 Date
1. Slope, Volume,
2. Pyroclastic
Topic : Ch 1.3 Volcanic Hazards: Flows
Objective: Understand How topography influences lava
Standard: Earth Science 3a-f
m = rise/run, V= lwh = lw temp = Celsius, Fahrenheit,
Fire- bombs of lava, 2mm to 64m?
Dirt, sand, rocks, water lava
3. Topographic effects Steep slope = fast, increasing (picture) “cone vol”
Gentle slope = slow, decreasing (picture) “shield vol”
4. hazards
Road catches fire…. 3 more: fire burning, wild fires,
landslides, ashes, tsunami if landslide
5. evacuations
Duck / cover … give plan and needs
U/A p.31 1-4 half sheet
1. An eruption immediately destroys the area. After nutrients are –o-plenty.
2. A)3000
b) 1350 ish SO 350 ISH FEET AWAY
c) yes alerted the entire mountain
d) swift moving channeled lava
e) flowed down to the city
3. a) Water hardens the lava, aka. Cools the temp. b)a lot of water available
4. Lahars are mostly mud and ash while lava flows are…____________
Topic: Ch 1.4 Volcanic Hazards: Airborne Debris
Objective: What influences the motion of Debris in the atmosphere?
Standard: Earth Science 3a-3f
1. Airborne type -2.
Ash, lava bombs, pyroclastic, does lava effect atmosphere? Temp. change
Gas, Rocks, Smoke, Co2, Co
Tephra plum pg 36 – 2inch sq.
VEI – volcanic Explosivity index, 0-7, 0 low 7 high
Bottom of p.38 - A caldera formed when the surface collapsed into the emptying magma
Our Community - Volcanic debris can enter the atmosphere and reach the world
Ash mostly, “jetstream flows west to east”
U/A p.39 1-4 half sheet
Least to greatest area covered – lava flows, pyroclastic flows, Ash falls
The Jet stream will push the debris across the US.
Hawaii is a .................hotspot, Mt. St. Helens.....volcano, “lava”
Skip - Extra credit assignment! Due
From 9/23 wed
Topic: Ch 1.5 notes: Volcanoes and the Atmosphere
Objective: What else escapes from the volcano besides lava,
rocks, ash?
Standard: Earth Science 3a-f volcanic eruptions
1. Dissolved gas- In soda, and what you breathe out? Co2
Pressure must decrease to have gas escape.
2. Types of gas - Steam is water vapor, Co2- trees and
plant intake, So2 - sulfur dioxide, odor.
3. Volcanoes are part of water cycle - sand, water,
rocks(lava), Acid rain, heat, volcanoes give gas to the
atmosphere and mixes with h2o forms acid rain
4. Volcano and the climate - Ash is released – blocks suntemp. decrease Gas is released – traps the sun light –
temp. increase
Notes for Thursday 9/24/09
Topic: Ch 1.6 Volcanoes History
Objective: What minerals turn cooled lava dark?
Magnesium Mg: Iron Fe
Standard: ES 3 a-f
1. Intrusive Igneous Rock – underground, slow cooling
Igneous = lava after 106 years, large crystals
2. Extrusive Igneous rock – Above ground, fast cooling
Small crystals, glassy shine
3. Low silica rock - basalt, fine grained rock, 70 % of surface,
ocean floor
4. High silica rock – viscous fine grained rock, Rhyolite
U/A p.51 1, 2 half sheet
1. Sketch the picture then label:
a) two Intrusive igneous rocks
b) two extrusive igneous rocks
2. Why study rocks? (a)Crystals inside for jewelry, cement material,
building supplies, to know where to build, ore, Sculptures
(b) Geological evidence (rocks around you) stress, size,
material that makes them up,
the pressure difference that makes them up.
What minerals are present, where they came from
Agenda 9/25
1. Ch 1.7 Volcano Monitoring Notes
2. U/A p59 # 1
Items below:
Early today X-credit on time Tue 9/29
 CW: notes needs coversheet look at board
 Hw:
Notes Fri 9/25
Topic: Ch 1.7 Volcanic History
Objective: Monitoring Active volcanoes
How? Why?
Standard: Es 3a – f Dynamical Earth Processes
1. Understanding Vol eruptions – Earthquakes occur, smoke
ash rise, Animals flee, “Ire silence”
2. Describe volcanic Monitoring – seismicity aka Richter
scale, EQ, Dome growth, Lava under pressure, GPS data
shows growth of mountain, Lasers used to detect temp.
3. How to build monitoring – Visual, Auditory, Kinesthetic,
See, hear, feel - Eyes and video cameras, telescope, Ears
and audio device, Take samples back to lab - microscope
U/A p. 51 half sheet
1. Draw a picture like p.51
Label outside volcano Extrusive Igneous
Label inside Intrusive igneous
2. Study rocks – for past history, mineral understanding,
jewelry. Cpu
Is there a volcano? Where Fault lines are.
U/A p. 59 on back or other half sheet
1. a. Give a name for your volcanic monitoring device.
b. copy 1 neighbors device item
c. does the “B” help in evacuations?
d. Prior to eruption volcano expands
e. GPS monitor growth
f. gases – temp. Increase Pressure increase
g. EQ – more, violent

Summary -