اختبار - علوم - المتكاملة لغات - اولى ثانوي - الوحدة الاولى - ترم اول - نموذج 3

هذه معاينة نصية للأسئلة للاطّلاع والمراجعة فقط. لخوض الاختبار تفاعليًّا مع تصحيح آلي ونتيجة فورية، اضغط زر «ابدأ الاختبار» أدناه.

1. The lack of gas resulting from the respiration process in water doesn't affect the flow of energy in aquatic food chains
   • أ. False
   • ب. True
2. The factor(s) that affect the rate of dissolution of oxygen and carbon dioxide gases in water is / are ...
   • أ. Temperature
   • ب. Type of water (fresh or salty)
   • ج. Availability of waves and water turbulence
   • د. All of the above
3. Calcium carbonate is soluble in water
   • أ. False
   • ب. True
4. Calcium bicarbonate is sparsely soluble in water
   • أ. False
   • ب. True
5. The ratio between the concentrations of carbon dioxide and oxygen gases in the air ....
   • أ. 0.002
   • ب. 0.03
   • ج. 0.05
   • د. 500
6. If the amount of oxygen dissolved in one liter of river water at a temperature of 20°© is about 10 mg, what is its potential amount in one liter of ocean water when the temperature drops .... mg
   • أ. 7.5
   • ب. 12
   • ج. 5
   • د. 10
7. What is the effect of the high level of dissolved oxygen in water on the efficiency of the respiration process in living organisms?
   • أ. Enhances it
   • ب. Reduces it
   • ج. Hinders it
   • د. Does not affect it
8. Which of the following increases the activity of fish in the aquatic environment
   • أ. Increase the percentage of dissolved oxygen in the water
   • ب. Increase the impact of human activities on the water
   • ج. Decrease the pH value of the water
   • د. Increase the salinity of the water
9. Which of the following reduces the percentage of carbon dioxide in the water
   • أ. Photosynthesis of algae
   • ب. Respiration of marine animals
   • ج. Industrial pollution
   • د. Gas exchange between water and the atmosphere
10. Which of the following factors lead to an increase in the percentage of carbon dioxide dissolved in the water
    • أ. Decomposition of organic matter and decreased temperature
    • ب. Increase in the salinity of water and industrial pollution
    • ج. Increase in the percentage of phytoplankton and increased temperature
    • د. Respiration of aquatic organisms and increased salinity of the water
11. Which of the following is not considered a source of dissolved CO2 in the aquatic environment
    • أ. Sodium chloride salts dissolved in water
    • ب. Breathing of fish and molluscs
    • ج. Pollutants from some factories that are discharged into the water
    • د. The atmosphere
12. Which human activities reduce the pH value of freshwater lake water?
    • أ. Agricultural drainage water for the lake
    • ب. Planting trees on the sides of the lake
    • ج. Using sailboats for recreation
    • د. Overfishing
13. Which organisms are directly affected in the food chain by the decrease in the concentration of carbon dioxide in the water?
    • أ. Producers
    • ب. Small fish
    • ج. Predatory fish
    • د. Decomposers
14. A plant in a certain aquatic environment converts a percentage of solar energy amounting to X into chemical energy stored in its food. If this percentage decreases over time, which of the following is associated with this…
    • أ. Decrease in the percentage Oxygen in water
    • ب. Increase in the pH value of the water
    • ج. Increase in the activity of organisms
    • د. Increase in the number of molluscs
15. Which of the following represents an increase in its percentage in seawater that is harmful to mollusks and corals
    • أ. Carbon dioxide gas
    • ب. Seaweed
    • ج. Phytoplankton
    • د. Oxygen gas
16. Which of the following increases the acidity of water in water bodies
    • أ. Rain loaded with carbon dioxide
    • ب. Formation of calcium carbonate
    • ج. Increase in the percentage of oxygen in water
    • د. Increase in the amount of heat absorbed by water
17. Which of the following statements is correct about life in the aquatic environment
    • أ. Increased water acidity is accompanied by a decrease in calcification
    • ب. Increased acidification is accompanied by increased respiration
    • ج. Increased organic decomposition in water is accompanied by a decrease in water acidity
    • د. Increased respiration is accompanied by increased calcification
18. When comparing the solubility of Co2 and the solubility of O2 in water at different temperatures, we find that ..
    • أ. Solubility of CO2 is less than solubility of O2 at high temperatures
    • ب. Solubility of both gases is equal at high temperatures
    • ج. Solubility of both gases is equal at low temperatures
    • د. The solubility of O2 is higher than Solubility of CO2 at low temperatures
19. All of the following supports the balance of the aquatic ecosystem except...
    • أ. Increase in water temperature
    • ب. Diversity of aquatic organisms
    • ج. Increase in the rate of photosynthesis
    • د. Increase in the concentration of dissolved oxygen in water
20. Which of the following is not a result of increasing the percentage of dissolved carbon dioxide in water ..
    • أ. Converting calcium bicarbonate to calcium carbonate
    • ب. Increase in the ability of plants to produce food
    • ج. Difficulty in breathing aquatic organisms
    • د. Decrease in the pH value of water
21. Which of the following reduces the rate of oxygen solubility in water ..
    • أ. Dissolving more carbon dioxide
    • ب. Water turbulence and waves
    • ج. Decrease in water salinity
    • د. Increase in the rate of photosynthesis
22. If the rate of energy flow from green algae to the aquatic larvae that feed on them decreases, this may be an indication of ..
    • أ. Decrease in the percentage of carbon dioxide dissolved in the water
    • ب. Organic remains have caused algae to lose their ability to produce energy
    • ج. Increase in the percentage of dissolved oxygen in the water
    • د. Increase in the number of mollusks that feed on the larvae
23. Studies have shown that the temperature of the upper part of the ocean waters has risen by a certain amount every ten years during the last hundred years. In light of what you have studied, which of the following is one of the main reasons for this...
    • أ. Increase in the percentage of carbon dioxide in the air
    • ب. Decrease in the percentage of dissolved salts in the water
    • ج. Increase in the alkalinity of ocean water
    • د. Decrease in ocean acidity
24. Which of the following, if increased, leads to an increase in the percentage of dissolved oxygen in the water .
    • أ. The process of photosynthesis
    • ب. Concentration of salts and water
    • ج. Air pollutants
    • د. Temperature Water