upwelling
movement of deeper water toward the ocean surface
n.L3 発展C1
湧昇；深層の海水の上昇
英語の定義 the movement of deeper water toward the ocean surface, often bringing cooler, nutrient-rich water upward
TOEFL語彙
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語彙（105）
thaw
v. · B2 · L2stop being frozen as conditions warm
解ける；解凍する
tide
n. · B2 · L1periodic change in sea level mainly caused by gravitational forces
潮汐；潮の満ち引き
toxic
adj. · B2 · L1harmful because it can poison organisms
有毒な
tsunami
n. · B2 · L2large waves caused by sudden displacement of water
津波
upwelling
n. · C1 · L3movement of deeper water toward the ocean surface
湧昇；深層の海水の上昇
volcanic
adj. · B2 · L2produced by or associated with volcanoes
火山の；火山活動で生じた
wastewater
n. · B2 · L1water left after domestic, industrial, or other use
排水；廃水
water cycle
n. · B1 · L1circulation of water among the atmosphere, land, and oceans
水循環
water scarcity
n. · B2 · L1lack of enough available water to meet demand
水不足；水資源の不足
water table
n. · C1 · L2level marking the top of the saturated groundwater zone
地下水面；地下水位
watershed
n. · C1 · L2land area whose water drains toward the same outlet
流域；集水域
weather
n. · A2 · L1atmospheric conditions at a particular place and time
天気；気象
weathering
n. · C1 · L2physical or chemical breakdown of rock without its transport
風化作用
wildfire
n. · B2 · L1unplanned fire spreading through wild vegetation
野火；森林や草地の火災
wind speed
n. · B1 · L1speed at which air moves past a point
風速