問 1
1 点Which statement accurately describes the solubility of oxygen gas from the atmosphere when it dissolves in sea water?
Cambridge IGCSE · Marine Science (0697)
Dissolved gases：練習問題
その場で採点される選択問題 5 問と、解説つきの記述問題 5 問。すべて「Dissolved gases」からの出題です。
10 問23 点無料・登録不要
問 2
1 点A marine researcher observes that the surface waters of the Arctic Ocean typically have a much higher concentration of dissolved oxygen than the surface waters of the tropical Caribbean Sea. Which of the following provides the best scientific explanation for this observation?
問 3
1 点In the open ocean, the concentration of dissolved oxygen often reaches a minimum at depths between \(200\text{ m}\) and \(1000\text{ m}\) (the twilight zone). What is the primary reason for this oxygen minimum?
問 4
1 点According to the syllabus, how is the solubility of oxygen described when it dissolves from the atmosphere into sea water?
問 5
1 点How does the concentration of dissolved oxygen typically change from the twilight zone (\(200\text{--}1000\text{ m}\)) to the midnight zone (below \(1000\text{ m}\))?
問 6
2 点State the effect of a decrease in sea water temperature on the solubility of atmospheric gases like oxygen.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 7
3 点Compare the relative concentrations of oxygen and carbon dioxide in the atmosphere with their concentrations when dissolved in sea water.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 8
6 点Describe the vertical distribution of dissolved oxygen from the ocean surface down to the midnight zone, and explain the primary reason for the oxygen minimum layer.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 9
3 点Gases from the atmosphere dissolve in sea water and play a critical role in marine ecosystems.
(a) Identify two primary gases that dissolve from the Earth's atmosphere into the surface of the ocean.
(b) State how an increase in sea water temperature affects the solubility of oxygen.
(c) Name one biological process in marine organisms that produces carbon dioxide as a byproduct.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 10
4 点Gases such as oxygen and carbon dioxide from the atmosphere dissolve into sea water and are essential for marine life.
(a) State which of these two gases, oxygen or carbon dioxide, has a lower solubility in sea water.
(b) Use particle theory to explain why an increase in the temperature of sea water reduces the solubility of dissolved oxygen.
まず自分で答えを書いてから、解説と照らし合わせましょう。
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