These two phases in the Moon's orbit cause spring tides.
What are Full Moon and New Moon?
If a high tide occurs at 6:00 AM, the next high tide will occur around this time.
What is 6:30 PM?
Tides are mainly caused by this force from the Moon.
What is gravity?
These two labeled locations experience high tide in Figure One.
What are H and D?
This type of tide occurs when the Sun, Earth, and Moon are lined up in a straight line.
What is a spring tide?
These two phases cause neap tides.
What are 1st quarter and 3rd quarter?
The next high tide after 7:12 AM, 7:38 PM, and 8:04 AM would occur at this time.
What is 8:30 PM?
The Moon affects tides more than the Sun because of this reason.

These two labeled locations experience low tide in Figure Two.
What are A and E?
During this Moon phase alignment, tides are the most extreme because gravitational forces combine.
What is a new moon or full moon?
This is the approximate time it takes the Moon to move from a New Moon to a Full Moon.
What is two weeks?
If a high tide happens at 3:00 PM today, this will be the approximate time of high tide during the day tomorrow.
What is 3:50 PM?
Daily changes in tide height happen mainly because of this motion.
What is Earth's rotation on its axis?
This motion is most repsonsible for daily tides.
What is Earth spinning on its axis?
If the Moon moved closer to Earth, this would happen to the height of high tides.
What is high tides would increase?
This type of tide has a large difference between high and low tide.
What is a spring tide?
If low tide is at 10:00 AM, the next low tide will be at approximately this time.
What is 10:30 PM?
Montly tide changes happen mainly beacuse of this motion.
What is the Moon revolving around Earth once per month?
This motion is most responsible for monthly tide cycles.
What is the Moon orbiting Earth?
When the Sun and Moon are positioned at right angles to Earth, this type of tide occurs.
What is a neap tide?
These tides occur when the Sun and Moon are at right angles to each other.
What are neap tides?
If today's high tide is at 4:00 PM, this will be the approximate high tide time two days from now.
What is 5:40 PM?
The gravitational pull between Earth and the Moon depends on this property.
What is mass?

This type of tide is most likely occuring at Point B.
What are spring tides?
If a beach is experiencing very low water and exposed seashells, it is most likely located here relative to a tidal bulge.
What is outside the tidal bulge?