Natural Hazards Lesson Three
description
Transcript of Natural Hazards Lesson Three
Learning Outcomes
What: Learn how the earth’s crust is split up into tectonic plates
How: Create a model of the worlds tectonic plates
Why: To be able to explain why plates move
KEY WORDSTectonic Plates Continental Drift
Convection Currents
Learning Focus: What are tectonic plates?
Ask 5 Geographical questions about this picture
• Who?
• What?
• Where?
• When?
• Why?
• How?
EXTENSION
Try to answer 2 of your questions
As we have seen in previous lessons the earth is made up of different layers.The crust is the outer most layer and sits on top of the mantle, which is a liquid made up of molten rock.The crust is broken up into plates, which float on the mantle.
Outer core
Crust
Mantle
Inner core
African
Indo-Australian Plate
North American
South American
Eurasian
Pacific
Nazca
Antarctic
Pacific
Convention Currents
Mantle
Crust
The movement of the convection currents within the mantle results in the plates moving in different directions.
Task: Copy the following passage using the words in the box to fill in the blanks.
The earth’s crust is split up into _________ plates, that movearound on top of the _____________. Due to the heat created by the core ___________ currents are generated in the liquid mantle. This slow movement has resulted in the plates __________ around.
The position of the plates is ever ___________ and the world we see today will be very different in a million years time.
changing tectonic convectionmoving mantle
tectonic
convection
moving
mantle
changing
Look back at the picture from the start of the lesson.
Can you answer any of the questions you asked at the start of the lesson?
Extension: What other questions might you want to ask?