地震学: seismology

地滑り, 地辷り: landslide; trends of things changing rapidly

(slang) Of an adult, buying (chiefly childish) things in great amounts (due to newfound purchasing power).

(slang) To do the above.

時速: per hour / 自足: self-sufficiency / 磁束: magnetic flux / 孳息: fructus

"the affairs of adults", a euphemistic and intentionally vague explanation for things

pierce / approximately 3.75 kg (8.33 pounds) (weight) / penetrate / brace

考え: thought, opinion

図鑑: An illustrated reference book, such as a field guide, bestiary, guide book, or picture book

監視網: surveillance network