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CBT TEST

EMT 205 CBT PRACTICE

Phil

January 11, 2025

Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 30 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace EMT 205 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions
Do not waste time on a question you don’t know
Move as fast as possible and starting with questions that don’t have calculation first to save time
Always crosscheck
Don’t be in a hurry to submit, you are not in a competition
Don’t be scared. Getting an A is easy
Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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EMT 205

1 / 40

1. Conductivity in seawater is primarily measured in units of:

A. Parts per thousand

B. Grams per kilogram

C. Millisiemens per centimeter

D. Micrograms per liter

2 / 40

2. The Atlantic Ocean is noted for:

A. Being the shallowest ocean

B. Being fully enclosed in the southern hemisphere

C. Having the busiest sea route in the world

D. Lacking significant marine life

3 / 40

3. The Southern Ocean was officially recognized as a separate ocean in:

A. 2000

B. 1985

C. 2015

D. 1995

4 / 40

4. The relationship between chlorinity and salinity is expressed as:

A. Salinity = 0.5 × Chlorinity

B. Salinity = 1.80655 × Chlorinity

C. Chlorinity = Salinity ÷ 1.80655

D. Chlorinity = 1.5 × Salinity

5 / 40

5. The term “halocline” refers to:

A. A well-mixed surface layer of salinity

B. A zone with large salinity changes below the surface

C. Seasonal salinity variations

D. Uniform salinity at ocean bottoms

6 / 40

6. Ice floats on seawater because:

A. Pressure increases at freezing points

B. It has higher salinity than water

C. Water density decreases below 4°C

D. Seawater lacks dissolved solids

7 / 40

7. The relationship between salinity and dissolved oxygen concentration is:

A. Directly proportional

B. Inversely proportional

C. Not related

D. Constant

8 / 40

8. The Arctic Ocean is characterized by:

A. A completely enclosed system

B. Being the saltiest ocean

C. A shallow basin with an average depth of 5,449 meters

D. The greatest depth among all oceans

9 / 40

9. Ocean density is directly proportional to:

A. Salinity and pressure

B. Dissolved oxygen concentration

C. Temperature and pressure

D. Salinity and temperature

10 / 40

10. Chlorinity is defined as:

A. The mass of halides expressed as Cl- precipitated from 1 kg of seawater

B. The ionic strength of seawater

C. The ratio of sodium to chloride in seawater

D. The total amount of salts in a liter of seawater

11 / 40

11. The surface salinity of the ocean is lowest near:

A. Equatorial regions with high evaporation

B. Arid coastal zones

C. Polar regions

D. Regions with significant river inflow

12 / 40

12. The major constituent of seawater contributing most to salinity is:

A. Sodium chloride

B. Potassium

C. Magnesium

D. Sulfate

13 / 40

13. The buffering effect of seawater is mainly due to the presence of:

A. Sodium ions

B. Chlorine gas

C. Carbonate-bicarbonate system

D. Phosphate ions

14 / 40

14. The solubility of gases in seawater decreases with:

A. Decreasing pressure

B. Increasing depth

C. Increasing temperature

D. Decreasing salinity

15 / 40

15. The major gases dissolved in seawater include:

A. Oxygen, carbon dioxide, and nitrogen

B. Methane, nitrogen, and argon

C. Argon, nitrogen, and carbon dioxide

D. Hydrogen, nitrogen, and oxygen

16 / 40

16. The average depth of the world oceans is approximately:

A. 10,542 m

B. 3,700 m

C. 5,500 m

D. 7,450 m

17 / 40

17. Which oceanographic branch focuses on marine life distribution and environmental aspects?

A. Chemical oceanography

B. Biological oceanography

C. Geological oceanography

D. Physical oceanography

18 / 40

18. The property of seawater that influences its electrical conductivity is:

A. The presence of dissolved salts

B. Alkalinity levels

C. Temperature exclusively

D. High oxygen content

19 / 40

19. The tipping thermometer is used to measure:

A. Conductivity

B. Water salinity

C. Water temperature at selected depths

D. pH levels

20 / 40

20. Seafog is formed when:

A. Warm damp air passes over a cold sea surface

B. Cold air flows over warm water

C. High winds reduce surface temperature

D. Humidity levels drop significantly

21 / 40

21. The most accurate method of determining salinity is:

A. Conductivity meters

B. Evaporation method

C. Boiling off all water

D. Use of hydrometers

22 / 40

22. The Indian Ocean is distinctive because:

A. It is surrounded by ice

B. It is the largest ocean by surface area

C. It is mostly enclosed to the north

D. It contains the deepest oceanic trench

23 / 40

23. The Mediterranean Sea experiences high salinity primarily due to:

A. Minimal river inflows

B. Rapid thawing of ice

C. High precipitation levels

D. Excess evaporation

24 / 40

24. The salinity range in most oceans and seas is typically:

A. 28-32%

B. 32-38%

C. 40-45%

D. 20-25%

25 / 40

25. Seasonal thermoclines are most prominent in:

A. Middle latitudes with strong seasonal warming

B. Coastal estuaries

C. Low latitude tropical areas

D. Polar regions

26 / 40

26. In seawater, carbon dioxide plays a key role in:

A. Salinity variations

B. Buffering pH levels

C. Dissolved oxygen replenishment

D. Temperature regulation

27 / 40

27. Oceanic upwelling contributes to:

A. Surface water temperature stabilization

B. Increased nutrient availability in surface waters

C. Oxygen depletion at the ocean surface

D. Decreased salinity near coastal zones

28 / 40

28. The salinity of brackish water typically falls within the range of:

A. 0.6–30 ppt

B. 0–0.5 ppt

C. Greater than 50 ppt

D. 31–50 ppt

29 / 40

29. The Southern Ocean is uniquely defined by:

A. The absence of salinity variations

B. A complete lack of currents

C. Water surrounding Antarctica up to 60° S

D. The shallowest average depth

30 / 40

30. The oxygen minimum zone in the ocean occurs due to:

A. Rapid oxygen consumption by respiration and decomposition

B. Excessive mixing of surface and bottom waters

C. High photosynthetic activity

D. Increased carbon dioxide emissions

31 / 40

31. Ocean currents like the Gulf Stream influence:

A. The formation of oceanic trenches

B. Global heat transport and climate

C. Nutrient depletion in polar regions

D. Reduced salinity in equatorial regions

32 / 40

32. The Pacific Ocean occupies approximately what fraction of the Earth’s surface?

A. 1/2

B. 1/3

C. 2/3

D. 1/4

33 / 40

33. The Gulf Stream influences:

A. Formation of estuarine environments

B. Oxygen content in deep-sea zones

C. Rainfall patterns and oceanic heat transport

D. Nutrient distribution near the surface

34 / 40

34. The major factor influencing surface salinity is:

A. Precipitation and evaporation

B. Upwelling

C. Photosynthesis

D. Ocean currents

35 / 40

35. The most abundant dissolved gas in seawater that influences marine life is:

A. Oxygen

B. Carbon dioxide

C. Methane

D. Nitrogen

36 / 40

36. The largest ocean by surface area and volume is:

A. Pacific Ocean

B. Atlantic Ocean

C. Indian Ocean

D. Arctic Ocean

37 / 40

37. The surface temperature of the ocean varies mainly due to:

A. Pressure fluctuations

B. Deep-water currents

C. Seasonal and latitudinal changes

D. Salinity differences

38 / 40

38. The primary sources of dissolved nutrients in seawater are:

A. Excreta of animals and decomposed organic matter

B. Photosynthesis and chemical weathering

C. Volcanic eruptions and evaporation

D. Thermal vents and atmospheric deposition

39 / 40

39. The tipping thermometer is used to measure temperature at:

A. Intermediate depths

B. Surface levels only

C. All depths simultaneously

D. The ocean floor exclusively

40 / 40

40. Balanced natural resource management focuses on the interaction between:

A. People and natural landscapes

B. Infrastructure and development

C. Markets and economies

D. Government and policies

Your score is

The average score is 43%

EMT 205 CBT PRACTICE

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