Mapping the Volcanic History of Long Valley
In the app: the whole story at your level, listening, the quiz and the word cards.
The same story at six levels
How the first sentence reads at every level, from A1 to C2.
- A1
The United States Geological Survey studies volcanoes.
- A2
The United States Geological Survey studies Long Valley.
- B1
The United States Geological Survey studies volcanoes in the Long Valley area of California.
- B2
The United States Geological Survey uses geologic mapping to study the history and hazards of volcanoes in the Long Valley region of California.
- C1
The United States Geological Survey uses geologic mapping to study the history and hazards of volcanoes in the Long Valley region of California.
- C2
Embedded within the earth of California’s Long Valley region lies a complex record of past eruptions, a history that the United States Geological Survey works to decipher.
Key words
Words from the B1 text, with their meaning.
- composition
- The parts or materials that something is made of.
- eruption
- An event where a volcano throws out hot rocks, fire, and smoke.
- diverse
- Very different from each other and of various kinds.
- viscous
- Thick and sticky, not flowing easily.
- collapse
- To fall down suddenly because of pressure or having no strength or support.
- depression
- An area that is lower than the ground around it.
Rewritten with AI from facts reported by USGS. Read the original for the full report.