Tides 101

The gravitational pull of the moon and sun.

The highest level of the tide.

The lowest level of the tide.

Tides that occur when the earth, moon, and sun are aligned and the tidal range is at its maximum.

Tides that occur when the moon and sun are at right angles to the earth's orbit and the tidal range is at its minimum.

Tides are the periodic rise and fall of ocean waters. They are caused by the gravitational pull of the sun and moon on the earth's oceans.

Tides are considered predictable because their movements are based on the positioning of the moon and sun in relation to the earth, which do not change their patterns.

The moon is the main factor that influences tides as it is closer to the earth than the sun and has the most gravitational pull.

Some types of tides mentioned in the text are high tides, low tides, semidiurnal tides, diurnal tides, spring tides, and neap tides.

Tides can have various effects on coastal regions, including changes in water level, erosion, and impacts on marine life.

The gravitational pull of the moon and the sun on the Earth's oceans.

Diurnal tides have one high tide and one low tide each day, while semidiurnal tides have two high tides and two low tides each day.

Spring tides occur during the full and new moon phases. They cause higher than average high tides and lower than average low tides.

Neap tides occur during the first and last quarter moon phases. They cause smaller differences between high and low tides.

Tides shape shorelines, transport sand and sediment, feed estuaries, and can worsen damage and erosion caused by storm waves.