富山県立入試の理科を英語で R4年度理科 大問2地震

皆さん、こんにちは。高岡の英語教室Iron English です。オンラインレッスンはこちら：https://ironwill-japan.com/online-english-eiken-juken/

今回は、富山県立入試の理科を英語で R4年度理科 大問2地震を解説している動画になります。

なお、高専入試の解説における地震の動画はこちらから

動画はこちらから

解説動画

英語音声動画

英文はこちら

２　(1)
What is the term for the shaking caused by the P-waves of an earthquake?
Answer:Preliminary tremors

２ The likely time of the earthquake's occurrence can be estimated as 15 hours, how many minutes, and how many seconds? Please find this information.

Answer:The distance X from the epicenter to point A is 32 km, and the speed of the S-wave is 4 km/s. Therefore, it took the S-wave 8 seconds to reach point A.Consequently, the earthquake occurred at 15:09:50.

3 answer: The distance between observation points B and C on the table is 80 km.

P-waves pass through the BC distance in 10 seconds, so their speed is 8 km/s.
S-waves pass through the BC distance in 20 seconds, so their speed is 4 km/s.
S-waves take 32 seconds to pass through the AB distance, so the distance is 32 seconds × 4 km/s = 128 km.
Therefore, the distance X from the epicenter to point A is
160 km - 128 km = 32 km.
Furthermore, the time at which the P-wave reaches point A can be determined from the difference in arrival times between both points AB.
This difference is the distance between AB divided by the speed of the P-wave, which is 128 km ÷ 8 km/s = 16 seconds.
Hence, the P-wave arrives at point A 16 seconds earlier than the arrival time at point B, which is 15:09:54.

4 answer
In earthquakes with the same depth of the seismic source, a larger magnitude earthquake results in higher seismic intensity near the epicenter. Additionally, in earthquakes with the same magnitude, a shallower seismic source leads to a wider area where stronger shaking is felt.

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英文を覚えるくらい、何度も音読しましょう！

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是非お問い合わせください！

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