Questions & Answers:
Q1. What causes the phenomenon of tides?
A) Gravitational pull of the moon
B) Rotation of the Earth
C) Solar flares
D) Ocean currents
A1. The correct answer is A) Gravitational pull of the moon.
Explanation: The passage specifies that tides are primarily caused by the gravitational pull of the moon, which results in the movement of water toward and away from shorelines.
Q2. Fill in the blank: Tidal power harnesses energy from the natural rise and fall of the Earth's ______.
A2. Tides
Explanation: The blank is filled with "tides," as the passage discusses how tidal power extracts energy from the rise and fall of tides.
Q3. True or False: Tidal barrages generate energy using the kinetic energy of flowing water.
A3. False
Explanation: Tidal barrages exploit the potential energy from the height difference between high and low tides, not the kinetic energy of flowing water.
Q4. Multiple Choice: Which structure operates similarly to a dam in tidal power generation?
A) Underwater turbines
B) Solar panels
C) Tidal barrages
D) Wind turbines
A4. The correct answer is C) Tidal barrages.
Explanation: Tidal barrages function like dams, as mentioned in the passage, by holding back water at high tide and releasing it through turbines at low tide to generate electricity.
Q5. Fill in the blank: Underwater turbines in tidal streams are driven by the ______ energy of moving water.
A5. Kinetic
Explanation: The passage explains that underwater turbines are powered by the kinetic energy of moving water, similar to how wind turbines are powered by the kinetic energy of moving air.
Q6. True or False: Tidal energy production is highly variable and unpredictable.
A6. False
Explanation: Tidal energy is described as reliable and predictable in the passage, unlike solar or wind energy, which can be variable.
Q7. Multiple Choice: What is one environmental advantage of tidal power mentioned in the passage?
A) It produces greenhouse gases.
B) It generates waste.
C) It has a minimal visual impact.
D) It requires the use of fossil fuels.
A7. The correct answer is C) It has a minimal visual impact.
Explanation: The passage lists the minimal visual impact as an environmental advantage of tidal power, in addition to producing no greenhouse gases or waste.
Q8. Fill in the blank: The initial costs of tidal power are ______.
A8. High
Explanation: The passage mentions that one of the challenges of tidal power is the high initial costs associated with its implementation.
Q9. True or False: Underwater turbines are less efficient than wind turbines because water is denser than air.
A9. False
Explanation: Despite water's higher density, underwater turbines can generate significant power at low speeds, which the passage implies makes them efficient rather than less so.
Q10. Multiple Choice: What is a major challenge in developing tidal power technology?
A) The unpredictability of weather conditions.
B) Its reliance on fossil fuels.
C) Potential environmental impacts on marine ecosystems.
D) The production of greenhouse gases.
A10. The correct answer is C) Potential environmental impacts on marine ecosystems.
Explanation: The passage identifies potential impacts on marine ecosystems as a significant challenge to the development of tidal power technology.