Shield composite volcanoes LESSON

Report
A production by
Dwight Sutherland
Geography teacher
For more lessons like this contact
Dwight Sutherland on:
[email protected]
[email protected]
© Dwight Sutherland 2012
October 17, 2012
Title: Shield & composite volcanoes
L.O.:
1. To identify shield and composite volcanoes.
2. To compare shield and composite volcanoes.
Keywords
1. Shield volcano
2. Composite volcano
© Dwight Sutherland 2012
Starter TASK: Study the volcano diagram below. Label the
features at A, B, C, D & E.
Maybe these will help!
• Secondary vent
• Cone
• Vent
• Lava flow
• Main vent
• Ash cloud
• Magma chamber
• Crater
• Pyroclastic flow
• Volcanic bombs
• Lahars
• Secondary cone
B Ash cloud
C
Volcanic
bombs
D Main vent
E
A Lava flow
Magma chamber
At which plate boundaries would we find volcanoes? Constructive, destructive,
transform and collision.
© Dwight Sutherland 2012
TASK: Read through the resources of the Queen Mary Peak shield volcano.
Annotate your sketch to show all the characteristics of a shield volcano.
Broad peak
Gentler eruptions
Runny lava
Constructive plate boundary
Plate
Plate
MANTLE
© Dwight Sutherland 2012
Odd one out!
Progress check TASK: Cross out the images that are not shield
volcanoes. Write a reason for your choice.
A
C
B
YES
NO
NO
D
NO
F
YES
© Dwight Sutherland 2012
E
NO
TASK: Read through the resources on Mt. Pinatubo composite volcano.
Annotate the sketch to show all the features of a composite volcano.
Violent eruptions
Layers of ash and lava
Plate
Destructive boundary
MANTLE
© Dwight Sutherland 2012
Viscous or sticky lava
Plate
Map skills:
Progress check TASK: Circle the places on the map where you would
find composite volcanoes. Give a reason for your choice.
Composite volcanoes form at destructive plate boundaries.
© Dwight Sutherland 2012
AFL TASK: Read the various answers to exam question below. Discuss then use the
mark scheme to score each answer.
EXAM QUESTION: Explain three differences between shield and composite volcanoes.
(6 marks)
Response 1
Shield volcanoes are
broad and composite
volcanoes are steep. For
example Mt Pinatubo and
Queen Mary’s Peak.
Response 2
Shield volcano are volcanoes at
constructive plate boundary such
as Queen Mary’s Peak. But
composite volcano like Mt
Pinatubo is at destructive plate
boundary. Mt Pinatubo is in the
Pacific ring of fire. This is a place
where lots of volcanoes are
located.
© Dwight Sutherland 2012
Exam practice TASK: Explain the differences between shield and
composite volcanoes . (6 marks)
Marks
Response
0-2
Explain one difference or
list 2 differences.
3-4
Explain 2 differences.
Maximum three marks if
only list the differences
without any explanation.
5-6
Explanation 3 distinct
differences or student
explain two differences
backed up by examples.
© Dwight Sutherland 2012
Possible answers
• Shield volcanoes form at
constructive boundaries
whereas composite form
at destructive
boundaries.
• Shield volcanoes
eruptions are less
explosive than composite
volcanoes.
• Composite volcanoes
cause more damage to
life and property than
shield volcanoes.
• Examples of shield
volcano is Mauna Loa in
Hawaii. Mt. Pinatubo in
the Philippines is a
composite volcano.
©
Dwight Sutherland
Geography teacher
I have a bank of geography lessons
for learners year 7 up year 13.
If you would like copies of lessons like this
one please contact Dwight Sutherland on:
[email protected]
[email protected]
© Dwight Sutherland 2012

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