A patient observer of tidal pools can record how each species reoccupies the rocks in the weeks after a storm.
潮池的耐心观察者能记录风暴过后数周内各物种如何重新占据岩石。
A study paired the number of trained citizen-scientist observers with the count of newly logged bird sightings in a wetland reserve across five-year spans:
From a Command of Evidence: Quantitative question · Information and Ideas
Which choice best defines “observer”?
C — A person who watches something. “observer” means a person who watches something.
Which word means “a person who watches something”?
B — observer. “observer” means a person who watches something.
observer — a person who watches something. In Chinese: 观察者.
observer is pronounced /əbˈzɜːrvər/.
A patient observer of tidal pools can record how each species reoccupies the rocks in the weeks after a storm. (潮池的耐心观察者能记录风暴过后数周内各物种如何重新占据岩石。)
onlooker, spectator, witness — all close in meaning to observer (a person who watches something).
participant — each the opposite of observer (a person who watches something).
Yes. observer is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.