Definitions
Synonyms
Antonyms
Earthquakes Review
100
Define alter

To change or make different

100

Collapse

Crumble or fall apart

100

Severe

Mild; gentle

100

Earthquakes happen here

Tectonic plates

200

Define severe

Very serious or dramatic

200

Destruction

Wrecked; ruined

200

Hazard

Safety; harmless

200

The main fault line in California

San Andreas Fault
300

Define substantial

A lot; noticeable amount

300

Unpredictable

Random or chance

300

Destruction

Saving; construction

300

Earthquakes in the ocean cause

Tsunamis

400

Define crisis

Emergency or serious situation

400
Substantial

Considerable; significant

400

Collapse

Expand, Spread

400

Scientists use this to measure earthquakes

Seismographs

500

Define hazard

Danger or obstacle

500

Crisis

Catastrophe; disaster

500

Alter

Sustain, remain

500

An earthquake above this is considered a major earthquake

8.0

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