The Sun shines on half of the Earth. If the Sun is DIRECTLY above a certain spot, the sunlight is shining straight down, and the object won't cast any shadow. Someplace 20 miles away, the Sun isn't STRAIGHT up; it's about an arc-minute away from being STRAIGHT up. But you won't be able to tell this without some pretty precise instruments, so it will still "look" like it's overhead.
A few minutes earlier or later, and the Sun wouldn't look straight up either.
In the tropics. The sun is straight overhead at some time or other, between the tropic of Cancer, in the north and the tropic of Capricorn. During the equinoxes (vernal and autumnal), the sun is directly overhead at the equator.
summer solstice
Full Moon, but unless you live in the tropics the moon cannot be directly overhead.
Never (it's outside of the tropics).
Yes, the tropics are the locations where the sun goes the most north and south. Above the tropics will never see the sun directly overhead.
The tropics are located on parts of the earth where the sun shines directly overhead at least once every year. See related links below for more details.
No. The sun is only ever overhead in places between the tropics of Cancer and Capricorn. Arkansas is further north than this.
Actually the warmest are found closer to the tropics (23° North and South of the Equator). This is because those areas get sunlight directly overhead where the radiation of the Sun passes through the least atmosphere and has the greatest energy.
Actually the warmest are found closer to the tropics (23° North and South of the Equator). This is because those areas get sunlight directly overhead where the radiation of the Sun passes through the least atmosphere and has the greatest energy.
At either of the tropics the sun's rays are most directly overhead at mid-day in mid summer.
The sun is directly overhead at either one of the Tropics on either the June or December Solstice.
They have stable levels of moisture.