3.4 Tides

Why can some boats in a harbour move only during high tide?

What do we call the pull of the Moon’s gravity that moves water on Earth?

Which word means the distance from the water’s surface to the sea floor?

What is a place where ships dock and unload goods?

If high tide happens at 6 a.m., when will the next high tide occur?

The tidal range is 1.2 m. The low tide is 4.8 m deep. What is the high tide depth?

Which natural event can also be slightly affected by Earth tides?

A scientist records the lowest tide at 2 m and highest tide at 6 m. What is the tidal range, and what could cause it to be large?

Why might a place with a very small tidal range be safer for building a harbour?

The regular rise and fall of the sea level along the shore is called a _______.

In a coastal area, the high tide depth is 8 m and the low tide depth is 3 m. What is the tidal range?

When the Moon and Sun pull from different angles, the difference between high and low tide is small. What kind of tide is this?

If it’s low tide at 3 p.m., when is the next high tide?

Which word describes the total change between high tide and low tide?