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.
In most places, the oceans rise and fall every 12 hours and 26 minutes. These two daily âhigh tidesâ are caused by the gravity of the Moon, and also to a lesser degree by that of the Sun. One of the two high tides is usually greater than the other. Here's why. The Moon's gravity pulls the oceans on the side of the Earth nearer to it more than it pulls the Earth itself, causing a bulge of water.