Without the oceans and therefore water vapour, it is quite possible that the sky would appear
red
instead of blue with the absence of the world's oceans. Similar to that of Mars.
What color would the sky be if?
Blue
light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. Closer to the horizon, the sky fades to a lighter blue or white.
What color would the sky be if we didn't have the ocean?
Without the oceans and therefore water vapour, it is quite possible that the sky would appear
red
instead of blue with the absence of the world's oceans. Similar to that of Mars.
Can we survive without sun?
Without the Sun's rays,
all photosynthesis on Earth would stop
. … While some inventive humans might be able to survive on a Sun-less Earth for several days, months, or even years, life without the Sun would eventually prove to be impossible to maintain on Earth.
Why is the sea and sky blue?
The sky is blue due to a phenomenon called Raleigh scattering
. … The ocean is not blue because it reflects the sky, though I believed that up until a few years ago. Water actually appears blue due to its absorption of red light. When light hits water, the water's molecules absorb some of the photons from the light.
Why do stars twinkle?
As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving,
the bending of the light changes too
, which causes the star's appearance to wobble or twinkle.
Can a planet have a green sky?
The exact reason for this is debatable, but it is probably related to the redness of sunset (itself caused by the sunlight passing through more atmosphere) combining with increased water droplets in the air. On a planet where such conditions were normal,
the sky would always appear green to a human visitor
.
Why is sky red at sunset?
Blue is scattered more than other colours because it travels as shorter, smaller waves. However, at sunset,
light has further to travel through the
atmosphere. The shorter wavelength blue light is scattered further, as the sunlight passes over a greater distance, and we see the longer wavelength yellow and red light.
How long can humans survive without sun?
The current mean temperature of the Earth's surface is about 300 Kelvin (K). This means in two months the temperature would drop to 150K, and 75K in four months. To compare, the freezing point of water is 273K. So basically it'd get too cold for us humans within just
a few weeks
.
Will humans survive the death of the sun?
No life will survive the death of the sun
— but new life could be born after, new research suggests. … But new research suggests that our planet's magnetic shield may not always be so strong — and solar wind will only get more and more powerful as our local star approaches its ultimate demise.
How long can we survive without oxygen?
How long can the brain go without oxygen before serious damage occurs? After
five to ten minutes
of not breathing, you are likely to develop serious and possibly irreversible brain damage. The one exception is when a younger person stops breathing and also becomes very cold at the same time.
What gives Colour to the water?
The blue hue of water is an intrinsic property and is caused by
selective absorption and scattering of white light
. Dissolved elements or suspended impurities may give water a different color.
Why is ocean water salty?
Salt in the sea, or ocean salinity, is
mainly caused by rain washing mineral ions from the land into water
. Carbon dioxide in the air dissolves into rainwater, making it slightly acidic. … Sodium and chloride, the main constituents of the type of salt used in cooking, make up over 90% of all the ions found in seawater.
Why is ocean water two different colors?
Oceans appear blue because the sunlight scatters across the molecules
. Light from the sun is made up of a spectrum of different wavelengths. The longer wavelengths appear to our eyes as the reds and oranges, while the shorter ones appear blue and green.
How long do stars live for?
Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life. The most massive stars can burn out and explode in a supernova after only
a few million years of fusion
. A star with a mass like the Sun, on the other hand, can continue fusing hydrogen for about 10 billion years.
What star color is the hottest?
White stars are hotter than red and yellow.
Blue stars
are the hottest stars of all.
