Volcano Patterns
This is where most volcanoes are found on Earth
What are plate boundaries
This is a stationary source of magma beneath a moving tectonic plate
what is a hotspot
This is where most earthquakes occur.
Plate boundaries
These maps show the probability of earthquakes or volcanoes in an area.
hazard map
This tool measures ground motion during an earthquake.
seismograph
This famous region around the Pacific Ocean has many active volcanoes
what is the Ring of Fire
in a hotspot chain, this island is most likely to be volcanically active
What is the island of Hawaii
This type of plate boundary is known for earthquakes but not volcanoes.
These maps are used instead of predicting the exact time of earthquakes.
Risk Map
This type of data does a seismograph collect.
Ground motion over time
This type of boundary forms volcanoes when plates collide
Convergent Boundary
This process explains how the Hawaiian Islands formed over time
what is plate movement over a hotspot
This is the MOST important evidence scientists use to predict earthquake risk.
what is past earthquake locations
This is what areas with many past earthquakes are likely to have in the future.
More earthquakes
This improves when scientists add more seismographs to a network.
Accuracy / detection ability
This type of plate boundary forms volcanoes where plates pull apart
Divergent Boundary
This happens to older islands as they move away from the hotspot
What is they become inactive
This pattern of earthquakes helped scientists understand plate tectonics.
They occur in narrow zones
This is one way cities use hazard maps to stay safe.
building codes / city planning
Scientists use long-term seismograph data to identify this.
High-Risk areas
This is why volcanoes appear in clusters instead of randomly
What is plate movement / interactions
This evidence from island age proves tectonic plates are doing this
What is moving
This is what aftershocks tell scientists about stress in Earth’s crust.
Stress is still adjusting along faults
This is why scientists cannot predict the exact time of earthquakes.
Unpredictable
This incorrect idea is something seismographs CANNOT do.
Predict exact earthquakes