The video tutorial explores calderas, large crater-like depressions formed by volcanic eruptions. It explains the origin of the term 'caldera' from Latin, describes how calderas are formed, and distinguishes between collapsed and explosive calderas. The video highlights examples like Kilatoa Crater Lake in Ecuador and the Nangoran Goro Crater in Tanzania, discussing their unique features and ecological significance. The tutorial concludes by prompting viewers to consider why some calderas are water-filled while others are not.

What is a caldera?

• A small hill

• A large crater formed by volcanic activity

• A type of mountain

• A type of rock

What is the origin of the word 'caldera'?

• French, meaning 'crater'

• Greek, meaning 'large hole'

• Latin, meaning 'cooking pot'

• Spanish, meaning 'volcano'

Which of the following is an example of a water-filled caldera?

• Grand Canyon

• Kilatoa Crater Lake

• Mount Everest

• Nagoran Goro Crater

Where is the Nagoran Goro Crater located?

• United States

• Japan

• Tanzania

• Ecuador

What unique feature is found in the middle of the Nagoran Goro Crater?

• A desert

• A Salt Lake inhabited by flamingos

• A forest

• A glacier