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

1. The opposite figure represents three regions x, y, z in ocean water. Which of these regions is the most suitable for the presence of autotrophic algae?
   • أ. Area x
   • ب. Area y
   • ج. Area z
   • د. The three regions are of equal load
2. The opposite figure shows two different regions of ocean water, a shallow coastal water area A and an open water area B. What do the colors of regions A and B look like….. The color of region A ..........The color of region B .................
   • أ. Tends to blue/Tends to green
   • ب. Tends to green/Tends to blue
   • ج. Tends to blue /Tends to red
   • د. Tends to red/Tends to green
3. When solar radiation moves from space to the Earth’s atmosphere, it .....
   • أ. Most of it reaches the Earth’s surface
   • ب. It reaches the Earth’s surface completely
   • ج. It is completely scattered in the atmosphere
   • د. It is completely absorbed in the atmosphere
4. When solar radiation passes through the surface layer in ocean water…. • Absorbs long wavelengths of visible light first
   • أ. Absorbs long wavelengths of visible light first
   • ب. Absorbs short wavelengths of visible light first
   • ج. Completely absorbs all wavelengths of visible light together
   • د. Does not absorb any of the wavelengths of visible light
5. Which of the following regions of the electromagnetic spectrum has waves with shorter wavelengths ...
   • أ. Gamma rays
   • ب. Radio waves
   • ج. Visible light
   • د. X-rays
6. Solar radiation energy can be converted into .....
   • أ. Electrical energy
   • ب. Electrical energy
   • ج. Thermal energy
   • د. All of the above
7. The basic condition for the abundance of plants in an aquatic environment is ....
   • أ. Availability of an adequate amount of light to complete the process of photosynthesis
   • ب. Availability of fresh water
   • ج. High salinity
   • د. Low carbon dioxide
8. Of the marine organisms that live in cold regions ....
   • أ. Cod
   • ب. Tuna
   • ج. Barra coda
   • د. Coral reefs
9. In which of the following climatic seasons does the rate of decline in the number of marine organisms in the polar regions increase ....
   • أ. Winter
   • ب. Autumn
   • ج. Spring
   • د. Summer
10. Of the fish that can be found in the Atlantic Ocean at the equator ...
    • أ. Barra coda and tuna
    • ب. Barra coda
    • ج. Tuna and cod
    • د. Cod only
11. If you know that Barra coda and cod cannot exist together in the ocean at the same latitude because each type of them .....
    • أ. Has Adaptations to a certain temperature
    • ب. Lives at different depths in the ocean
    • ج. Has adaptations to a certain light intensity
    • د. Predatory fish
12. The opposite figure represents four regions of the electromagnetic spectrum. Which of the following represents regions A and B of the spectrum, respectively? Region A Visible light Ultraviolet rays Region B
    • أ. X-rays - gamma rays
    • ب. Infrared rays - X-rays
    • ج. X-rays - infrared rays
    • د. Infrared rays - micrometer rays
13. Which of the following quantities decreases in summer with increasing depth in the Red Sea waters? ...
    • أ. Water temperature and light intensity through it
    • ب. Water temperature and pressure
    • ج. Water density and temperature
    • د. Water density and pressure
14. Evaporating water appears blue because ....
    • أ. Blue light wavelengths penetrate to greater depths compared to other colors
    • ب. Water absorbs blue light wavelengths first
    • ج. The surface of the water reflects blue light wavelengths
    • د. Water does not absorb blue light wavelengths
15. The opposite figure shows two points X, y at two different depths in the ocean water. If the energy of visible light at point x equals E, then the energy of visible light at point y equals approximately …..
    • أ. E
    • ب. 1/2E
    • ج. 1/3E
    • د. 1/4E
16. A process carried out by aquatic plants to convert solar energy into chemical energy used in building organic materials .....
    • أ. The photosynthesis process
    • ب. The demolition process
    • ج. The transpiration process
    • د. The diffusion process
17. The opposite figure represents solar radiation at sea level. The ratio between the intensities of the two wavelengths is 1500 nm / 500 nm, respectively, of solar radiation at sea level....
    • أ. Greater than one
    • ب. Less than one
    • ج. Equal to one
    • د. Answer cannot be determined
18. The ocean current that carries warm water from the equator towards the North Atlantic Ocean ..
    • أ. Gulf Stream
    • ب. Visible light
    • ج. Solar radiation
    • د. Photosynthesis
19. Solar radiation that reaches sea level without being scattered ....
    • أ. Direct solar radiation
    • ب. Gulf Stream
    • ج. Visible light
    • د. Chemical energy
20. photosynthesis important for maintaining the ecological balance in the ocean
    • أ. True
    • ب. False
21. What are fluids?
    • أ. Materials that are characterized by their ability to flow
    • ب. Materials that have only an unstable shape
    • ج. Materials that have only a fixed volume
    • د. Materials that have a fixed volume and shape
22. Which of the following is not a characteristic of gaseous materials?
    • أ. Resists compression
    • ب. Does not have a fixed volume
    • ج. Occupies any space in which they are found
    • د. Easily compressible
23. Which of the following is not a fluid?
    • أ. Ice
    • ب. Mercury
    • ج. Oil
    • د. Atmospheric air
24. What is the unit used to measure pressure?
    • أ. N/m2
    • ب. Kg/m3
    • ج. M/s2
    • د. Joule
25. The pressure exerted by a man on the surface of the earth is greater when
    • أ. He stands on the toes of one foot on the ground
    • ب. He lies on the ground
    • ج. He stands with one foot on the ground
    • د. He stands with both feet on the ground
26. All of the following are units of pressure except …
    • أ. W
    • ب. Bar
    • ج. N/m2
    • د. Pa
27. How does pressure affect a point inside a liquid?
    • أ. In all directions equally
    • ب. From below only
    • ج. In opposite directions
    • د. From above only
28. The level of the connected seas and oceans is at the same horizontal level, due to the equality of
    • أ. The depth of the water
    • ب. The volume of the water
    • ج. The area of the water
    • د. All of the above
29. The pressure of the liquid in communicating vessels does not depend on
    • أ. The shape of the vessels
    • ب. The density of the liquid
    • ج. The height of the liquid
    • د. The acceleration of gravity
30. A boat traveling at a speed of 50 m/s for a distance of 100 m, the amount of pressure exerted on it is equal to …atm
    • أ. 1
    • ب. 10
    • ج. 100
    • د. 125
31. A fish is subjected to a pressure of 8 atm, so it is found at a depth equal to ..m
    • أ. 70
    • ب. 7
    • ج. 35
    • د. 80
32. Which marine organisms can withstand higher pressure?
    • أ. Deep-sea organisms
    • ب. Organisms that live at medium depths
    • ج. All are equal
    • د. Surface organisms
33. What is the importance of lipoproteins in the cell membranes of marine organisms?
    • أ. Increase the flexibility of the membrane
    • ب. Reduce the area of the membrane
    • ج. Does not affect the membrane
    • د. Increase the volume of the membrane
34. What are the adaptations that help fish move upward in the water?
    • أ. Swim bladders
    • ب. Large liver
    • ج. Fins
    • د. All of the above
35. Which of the following organisms is exposed to less water pressure?
    • أ. Surface organisms
    • ب. Organisms that live at medium depths
    • ج. Deep-sea organisms
    • د. Organisms that need more light
36. It helps... fish to float and balance in the water
    • أ. Swim bladder
    • ب. Lipoproteins
    • ج. Large gills
    • د. Cartilaginous skeleton
37. It is considered...a more flexible and lighter tissue, which gives fish high flexibility
    • أ. Cartilage
    • ب. Proteins
    • ج. Bones
    • د. Fat
38. Sharks are...
    • أ. Cartilaginous fish
    • ب. Bony fish
    • ج. Jawless
    • د. Mammals
39. Bony fish...
    • أ. Tilapia
    • ب. Ray
    • ج. Whale
    • د. Shark
40. Tilapia has... that helps it move between depths
    • أ. Air bladder
    • ب. Liver rich in oils
    • ج. Small gills
    • د. Large lungs