Tides Flashcards
What are tides
The daily rise and fall of the ocean (near the coast)
what causes tides
The gravity of the Moon and the Sun
how many low tides are there in a day
2
how many high tides are there in a day
2
Which gravitational pull is stronger on the tides the Moon’s or Sun’s? Why?
The Moon’s because it is closer to the Earth
What is another name for a high tide
tidal bulge
Why do the tides intensify (higher) during the full and new moon? And what is this phenomena called?
Both the Moon and the Sun pull the Earth’s oceans in the same direction intensifying the tide. This is known as a spring tides
Does the name “spring tides” have anything to do with the season spring
No the name was chosen because the tide is higher at this time or “springs” up
Why do the tides minimize (lower) during the first and third quarter? And what is this phenomena called?
When the Moon and Sun are at a 90 degree angle , as they are in the first and third quarter moon, their gravities work against each other minimizing the effect of each body’s gravity. This is known as a Neap tide
During a neap tide, the differences in high tide and low tide are at a ____________
minimum
During a spring tide, the difference in high and low tide are at a ______________
maximum
