Starter quiz
- What is the name of the theory that explains the movement of tectonic plates?
- Plate Tectonics ✓
- Seismic Shift
- Volcanic Theory
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- What is an example of a tectonic hazard?
- Flood
- Earthquake ✓
- Hurricane
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- What are the two main types of tectonic plate?
- Continental and oceanic ✓
- Primary and secondary
- Inner and outer
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- Which layer of Earth is made up of tectonic plates?
- Core
- Mantle
- Lithosphere ✓
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- Where are most earthquakes and volcanoes found?
- In the middle of continents
- Along tectonic plate boundaries ✓
- Near the Equator
- Only under the ocean
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- What was Pangea?
- A large ocean that existed millions of years ago
- A supercontinent that existed millions of years ago ✓
- A type of volcano found in South America
- The name of the first tectonic plate
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Exit quiz
- Match the lesson's keywords and their definitions.
- rift valley⇔a steep-sided valley formed by plates pulling apart ✓
- shield volcano⇔has gentle slopes and erupts runny, basaltic lava ✓
- magnitude⇔measures the energy released by an earthquake ✓
- What happens at a constructive (divergent) plate margin?
- Two plates move towards each other
- Two plates slide past each other
- Two plates move apart ✓
- One plate is forced under another
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- Which feature is formed at constructive plate margins?
- Subduction zones
- Rift valleys ✓
- Fold mountains
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- What is an example of a constructive plate margin?
- The Himalayas
- The San Andreas Fault
- The Mid-Atlantic Ridge ✓
- The Andes Mountains
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- Where can volcanoes form?
- Only on land
- Only under the ocean
- Both on land and under the ocean ✓
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Constructive/divergent plate margins involve two plates moving away from each other.
- Distinctive processes occur at constructive/divergent plate margins.
- Earthquakes and volcanic eruptions occur at constructive/divergent plate margins and have distinctive characteristics.
Common misconception
Volcanoes only occur on land.
In fact, volcanoes occur underwater as well as on land, especially at constructive plate margins and hot spots.
Keywords
Rift valley - a long, narrow depression formed when a tectonic plate stretches and fractures at a constructive margin, causing the land to sink between parallel fault lines
Shield volcano - a broad, gently sloping volcano formed by basaltic lava that is runny and flows easily. Eruptions tend to be effusive rather than explosive - lava flows out
Magnitude - a measure of the energy released by an earthquake; a higher magnitude means a stronger earthquake
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