A.I. Explanation:

Question Focus: Cause of the 1992 tsunami shown at the first stage of the diagram

Correct Answer: offshore landslide

Passage Reference: In 1992, an offshore landslide caused a tidal wave of only about 3 feet high that struck a low tide, so Humboldt's County, where it hit

Why this is correct: When you look at the first box in the diagram, it asks for the cause of the 1992 tsunami. The speaker clearly says it was caused by an offshore landslide, so those exact words must be written.

Common Mistake: Some students write landslide only. That loses an important detail and changes the meaning. This is a partial truth trap.

Paraphrasing: Transcript: 'an offshore landslide caused a tidal wave' = Diagram: 'cause of tsunami'

Tips: For cause labels, listen for phrases like caused by or was caused by.

Key Vocabulary:

• offshore = away from the coast
• landslide = large movement of earth

Question Focus: Wave height for the Pacific Ocean earthquake example

Correct Answer: zero feet

Passage Reference: On January 13, 1992, a Pacific Ocean earthquake off the coast of San Salvador, registering 7.6 on the Richersdale, didn't cause any ocean disturbance at all.

Why this is correct: The diagram asks for the wave height of this event. The speaker says there was no ocean disturbance, which means the height was zero feet.

Common Mistake: Students often write no wave or no disturbance, but those exact words are not in the diagram format. This is a synonym trap.

Paraphrasing: Transcript: 'didn't cause any ocean disturbance' = Diagram: 'wave height'

Tips: When you hear negatives like didn't or no, be careful not to miss them. This often signals the correct answer.

Key Vocabulary:

• disturbance = movement
• zero = none

Question Focus: Cause of the Papua New Guinea tsunami

Correct Answer: submarine earthquake

Passage Reference: This wave was caused by a magnitude 7.1 submarine earthquake.

Why this is correct: The diagram box points to the cause of the Papua New Guinea tsunami. The speaker clearly explains it was a submarine earthquake.

Common Mistake: Some students write underwater earthquake because it sounds similar. You must copy the exact words from the speaker. This is a paraphrase trap.

Paraphrasing: Transcript: 'submarine earthquake' = Diagram: 'cause'

Tips: In FIB questions, always copy the exact wording you hear, not your own synonym.

Key Vocabulary:

• submarine = under the sea
• magnitude = strength

Question Focus: Number of people killed in the Papua New Guinea tsunami

Correct Answer: 3000

Passage Reference: on July 17, 1998, was 23 feet high and killed at least 1,200 people. This wave was caused by a magnitude 7.1 submarine earthquake. On July 17, 1998, a Papua New Guinea tsunami killed roughly 3,000 people.

Why this is correct: The diagram asks for the number of deaths. The speaker says the tsunami killed roughly 3,000 people, so the correct number is 3000.

Common Mistake: Students sometimes write 1200 because it is mentioned earlier. That refers to a different event. This is a context shift trap.

Paraphrasing: Transcript: 'killed roughly 3,000 people' = Diagram: 'number killed'

Tips: When several numbers are mentioned, always check which event the diagram box refers to.

Key Vocabulary:

• roughly = approximately
• killed = caused deaths

Question Focus: Height of the wave caused by the ancient Norwegian landslide

Correct Answer: 30 feet

Passage Reference: Finally, about 8,000 years ago, a massive undersea landslide off the coast of Norway sent a 30-foot wall of water barreling

Why this is correct: The final box of the diagram shows the wave height from the Norway landslide. The speaker describes it as a 30-foot wall of water, which matches 30 feet.

Common Mistake: Some students write 40 feet because that number appears earlier for a different tsunami. This is a sequence trap.

Paraphrasing: Transcript: '30-foot wall of water' = Diagram: 'wave height'

Tips: Stay focused until the very end of the recording. The last answer often comes in the final example.

Key Vocabulary:

• wall of water = very large wave
• barreling = moving fast

General Tips:

• Diagram and table questions follow the order of the recording. Use the previous answer to know when the next one is coming.
• Always respect the word limit. Even one extra word makes the answer wrong.
• Copy the exact words you hear. Do not replace them with your own synonyms.
• Listen carefully for numbers and match them to the correct event.
• Watch for signpost words like 'however' and 'finally'. They often introduce new examples.