What are tides?
The rise and fall of water of time.
What causes tides?
The moon.
How does the moon cause tides?
The moon’s gravitational pull tugs on the ocean water causing a bulge. Also known as Tidal Force
Where do high tides occur on the Earth?
High tides occur adjacent to the moon and the opposite side of the moon. Like a squeeze.
Where do low tides occur on the Earth?
Low tides occur on the sides opposite to the high tides.
True or False:
As the earth rotates on its axis each day, the bulges shift to stay oriented with the moon.
True
How many high tides and low tides are there in a 24 hour period?
There are two high tides and two low tides each day.
True or False:
The sun also has an affect the tides?
True
What is Spring Tide?
Occurs during the new moon and full moon phases when the sun, earth and moon are all lined up.
What happens during Spring Tide?
The pull from the sun is ADDED to the pull from the moon, making the high tides higher and low tides lower.
There are two spring tides each month.
What is Neap Tide?
Occurs during the moon’s FIRST QUARTER and THIRD QUARTER phases. The line between the earth and the sun is at a right angle to the line between the earth and the moon.
What happens during Neap Tide?
The sun and moon are pulling in DIFFERENT DIRECTIONS so they partially cancel each other out. This makes high tides less high and low tides less low.
There are two neap tides each month.
What is Tidal Range?
The distance between high and low tides.
Which tides have the BIGGEST tidal range?
Spring tides
Which tides have the SMALLEST tidal range?
Neap tides
