Drivers of any age must take a vision test with each renewal. In 2011, the legislature turned away a proposal to test older driversâ reflex and reaction times starting at age 75, and to require every-six-months renewals for people 90 and older.
What causes the tides? It is the gravitational attraction of the sun and moon that cause waters of the ocean to raise and lower at different parts of the earth. Tides occur in oceans, and to a much smaller extent, tides also occur in large lakes, in the atmosphere, and within the solid crust of the earth.
It is tempting to think that the moon pulls on the ocean, which makes it rise slightly - and this rising of the ocean is interpreted as a high tide by folks on the Earth. In this picture, as the Earth rotates under the moon, the high tide would appear to move - and you would see a high tide every 24 hours.