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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See sample questions for grade 10
A coastal city experiences its first high tide at 6:00 AM. Approximately what time will the next high tide occur?
Calculate the number of high tides a coastal city will experience in 48 hours.
Describe how the positions of the Sun, Moon, and Earth affect the occurrence of spring and neap tides.
Describe the difference between spring tides and neap tides.
A coastal city experiences its first high tide at 6:00 AM. Approximately what time will the next high tide occur?
Calculate the number of high tides a coastal city will experience in 48 hours.
If the gravitational force between two objects increases as the distance between them decreases, what happens to the tidal force when the Moon is closer to Earth?
If the Sun were to suddenly disappear, what would happen to the tides on Earth?
Which of the following best describes a neap tide?
(1) The highest high tide
(2) The lowest low tide
(3) A tide with the least difference between high and low water
(4) A tide that occurs only during a full moon
Which of the following best explains why there is a high tide on the side of Earth opposite the Moon?
(1) The Sun's gravity pulls water away from the Moon
(2) The Earth's rotation causes water to pile up
(3) The inertia of the water creates a bulge opposite the Moon
(4) The Moon's gravity is stronger on the far side
Which of the following has the greatest effect on Earth's tides?
(1) The Sun
(2) The Moon
(3) The Earth's rotation
(4) The Earth's atmosphere
Which of the following is a direct result of tidal forces?
(1) Ocean currents
(2) Erosion of coastlines
(3) Tidal bulges
(4) All of the above
Fill in the blank: The difference in height between consecutive high and low tides is called the ______.
Fill in the blank: The highest tides, known as ______ tides, occur when the Sun, Moon, and Earth are aligned.
Fill in the blank: The lowest point of a tide is called ______ tide.
Fill in the blank: The point of maximum high tide is called ______ tide.
True or False: The gravitational force between the Earth and the Moon is stronger than that between the Earth and the Sun.
True or False: The Sun's gravitational pull has no effect on Earth's tides.
True or False: The tidal force is the same as the gravitational force.
True or False: Tidal ranges are always the same everywhere on Earth.
