What is a supermoon?
 |
| Source: Wikipedia |
A supermoon is a full or new moon that nearly
coincides with perigee.
Perigee is the moon's closest point to Earth
in its monthly orbit.
This results in a moon which appears larger
than.
Its usual size when observed from earth.
The technical name for the same is perigee
syzygy i.e.
Roughly straight-line configuration of Earth,
Moon and the Sun.
Some important information about the supermoon.
The term supermoon is attributed to the astrologer
Richard Nolle.
Out of the possible 12 or 13 full or new moons
each year.
Usually, three or four may be classified as
supermoons.
Supermoons do not cause natural disasters.
Like earthquakes or volcanic eruptions.
Supermoons can cause larger-than-usual perigean
spring tides.
These tides are a few inches bigger than normal tides.
Where does Wind come from?
Wind can be defined as the movement of air
molecules on a large scale.
Sun is primarily responsible for the creation
of wind.
How?
Sun's rays heat up the Earth's surface every day,
but they do so unevenly.
Air present above the land heats up much faster
as compared to.
Air present above the surface of rivers and
oceans.
This results in the creation of different
air pressures.
The heated air above land expands and rises
up.
The cooler air from the oceans rushes in and
takes its place.
Resulting in a sea breeze.
Now, at night, inland temperatures drop.
Making oceans relatively warmer than land.
Hence air above oceans expands and rises up.
The cooler air from land rushes in to take
its place.
Resulting in a land breeze.
In this way, the wind is born.
Why do Astronauts wear Orange and White Spacesuits?
The orange spacesuit is called Advanced Crew
Escape Suit.
Astronauts wear it during the launching and
landing period.
But why?
Because if there is any malfunction during
the launching or landing period.
And the astronaut has to abandon the space
shuttle.
This particular shade is the most visible color against any landscape.
Especially against the blue sky and sea.
Thus making it easy for the rescuers to spot
the astronaut.
Now, the white spacesuit is called Extravehicular
Activities suit.
Astronauts wear it when they go outside the
space shuttle to do some work.
It is white in color for two reasons.
Firstly, in space, the astronaut is exposed
to the extreme heat of the sun.
And white is the color which reflects more
heat than any other color.
Thus preventing the astronaut from getting
too warm.
Secondly, the white color makes it easy.
To spot the astronaut against the black expanse of space.
Credit: You Tube (It's AumSum Time)
Post a Comment