Physical Geography Video and Quiz

Crater Lake: Caldera in the Cascades

After watching the Crater Lake: Caldera in the Cascades video, consider the questions below. Then "submit" your response.

1. The caldera formed when:

Mt. Mazama erupted and grew into a larger volcano

Mt. Mazama erupted and collapsed upon itself

there was a huge earthquake

the Pacific Ocean flooded the area

2. Ash from the eruption of Mt. Mazama has been recovered in:

Europe

South America

Asia

Greenland

3. Pumice from the eruption of Mt. Mazama formed soils that:

easily hold water

are very poor and support little vegetation

support rich agriculture

support cattle ranching

4. Wizard Island represents:

the original top of Mt. Mazama

a pile of pumice

continued volcanic activity after the formation of the caldera

a fault-block mountain

5. Phantom Ship represents:

continued volcanic eruptions after the formation of the caldera

a pile of pumice

the oldest rock in the caldera, exposed by the eruption that formed the caldera

a fault-block mountain