6.9B Tides D1

Front

What is a tide?

Back

The daily rise and fall of the water on Earth's coastlines.

Front

What causes tides?

Back

Tides are caused by the gravitational pull of the moon and the sun on Earth's oceans.

Front

What is a spring tide?

Back

A spring tide is a tide that occurs when the sun, moon, and Earth are aligned, resulting in the highest high tides and the lowest low tides.

Front

What is a neap tide?

Back

A neap tide is a tide that occurs when the sun and moon are at right angles relative to Earth, resulting in the lowest high tides and the highest low tides.

Front

What is tidal range?

Back

The difference between the levels of ocean water at high tides and low tides.

Front

When do spring tides occur?

Back

Spring tides occur during the full moon and new moon phases.

Front

When do neap tides occur?

Back

Neap tides occur during the first and third quarter moon phases.

Front

What is the relationship between the moon phases and tides?

Back

The moon phases influence the gravitational pull on Earth, affecting the height of tides.

Front

What is the effect of the sun on tides?

Back

The sun's gravitational pull also affects tides, but its effect is less than that of the moon.

Front

How often do tides occur?

Back

Tides typically occur twice a day, with two high tides and two low tides.