Multiple Choice
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1. Introduction to Biology
Introduction to Biology
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In most coastal areas, how often do high tides typically occur within a 24-hour period?
A
Three times
B
Once
C
Four times
D
Twice
Verified step by step guidance1
Understand the concept of tides: Tides are the periodic rise and fall of sea levels caused by the gravitational forces exerted by the Moon and the Sun, as well as the rotation of the Earth.
Learn about the tidal cycle: In most coastal areas, the tidal cycle consists of two high tides and two low tides within approximately 24 hours. This is known as a semidiurnal tide pattern.
Recognize the role of Earth's rotation: The Earth rotates once every 24 hours, and the gravitational pull of the Moon creates two bulges of water on opposite sides of the Earth, leading to two high tides.
Consider the timing: High tides typically occur about 12 hours and 25 minutes apart due to the Moon's orbit around the Earth, which slightly alters the timing of the tidal cycle.
Conclude that in most coastal areas, high tides occur twice within a 24-hour period, aligning with the semidiurnal tide pattern.
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