Tides and Their Causes
Physics ⇒ Earth and Space Physics
Tides and Their Causes starts at 8 and continues till grade 12.
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A coastal city experiences its highest tide when the Moon is full. What type of tide is this, and why does it occur?
Calculate the ratio of the tidal force exerted by the Moon to that exerted by the Sun, given that the Sun's mass is about 27 million times that of the Moon, but it is about 390 times farther from Earth.
Describe how the alignment of the Sun, Moon, and Earth affects the occurrence of spring and neap tides.
Describe how tidal energy can be harnessed for electricity generation.
Describe the difference between diurnal and semidiurnal tides.
A bay experiences unusually high tidal ranges. Which factor is most likely responsible?
(1) The bay's shape amplifies tidal effects
(2) The bay is far from the equator
(3) The bay has no rivers
(4) The bay is in the southern hemisphere
A coastal city experiences its highest tide when the Moon is full. What type of tide is this, and why does it occur?
A coastal region experiences a significant decrease in tidal range over several days. Assuming no unusual weather events, which lunar phase is most likely occurring, and what is the alignment of the Sun, Earth, and Moon?
A bay experiences unusually high tidal ranges. Which factor is most likely responsible?
(1) The bay's shape amplifies tidal effects
(2) The bay is far from the equator
(3) The bay has no rivers
(4) The bay is in the southern hemisphere
Which of the following best describes a spring tide?
(1) A tide with the least difference between high and low water
(2) A tide with the greatest difference between high and low water
(3) A tide that occurs only in spring
(4) A tide caused by wind
Which of the following best describes the term 'tidal range'?
(1) The distance between two high tides
(2) The difference in height between high tide and low tide
(3) The time between two low tides
(4) The speed of tidal currents
Which of the following best explains why there is a tidal bulge on the side of Earth opposite the Moon?
(1) The Earth's rotation
(2) The inertia of the water
(3) The Sun's gravity
(4) The Earth's magnetic field
Fill in the blank: The difference in height between consecutive high and low tides is called the tidal _______.
Fill in the blank: The lowest high tide during a lunar month is called the _______ tide.
Fill in the blank: The point on Earth where the ocean bulges outward due to the Moon's gravity is called the _______ tide.
Fill in the blank: The time between two consecutive high tides is approximately _______ hours.
True or False: The gravitational pull of other planets has a significant effect on Earth's tides.
True or False: The highest tides occur during the first and third quarters of the Moon.
True or False: The Sun has no effect on Earth's tides.
True or False: Tidal forces are stronger on the side of Earth closest to the Moon.
