Every star is different in this regard. Our Sun started out mostly hydrogen, but with traces of heavy elements; this is how we know that our solar system came from the remnant of several supernova explosions.
Today, after about 5 billion years, the Sun is now about 70% hydrogen and 28% helium, and 2% other heavier elements.
Helium accounts for approx 0.0005% by volume of earth's atmosphere. Being lighter than the main components of the atmosphere - nitrogen, oxygen, carbon dioxide, argon or water vapour, its share, by weight, is much smaller.
% in Universe= 23%% in Sun= 23%% in Meteorites= N/A% in Earth's Crust= 5.5×10-7%% in Oceans= 7.2×10-10%% in Humans= N/A
100% of Helium is in the Universe, dumb@$$
the sun is more than 95 % hydrogen with almost all the rest of the star being helium.
Helium is one of the trace gases in the atmosphere. The atmosphere contains around 0.1%.
The real question is how much of the universe's matter is this dick.
Helium makes up 0.0005% of the atmosphere. (About.com Geography)
98%
75%
Potassium is not a gas, it is a metal. It is found in mineral salts, not the atmosphere. It can be found in the atmosphere in small enough particles that move via wind currents, ocean spray, ect. but it is not a component of the atmosphere.
Most human activities take place in the layer of the atmosphere known as the troposphere. This is the lowest part of the atmosphere of the earth.
persepitation
No. Helium is a completley inert gas and is not known to undergo ANY chemical reactions.
Take pictures of the hurricane. Satellites are outside the atmosphere. Hurricanes only affect things in the atmosphere.
what causes all of the changes that take place in earths atmosphere is the tilt of the earths axis
It takes place on Earths atmosphere =)
It takes place on Earths atmosphere =)
it takes the heat of a meteorite coming through the earths atmosphere
Black holes, super novas, and lots of other stuff
about the size of 4 earths
well, to get out of earths atmosphere into the edge of space is about 5-8 minutes
to lift 1 kg or 2 pounds you need 0.16 kg of helium so for 2000 pounds you need 160 kg of helium or 320 pounds at 1 atmosphere
Growing more trees as trees take in carbon dioxide and releases oxygen that we use for breathing. So. I guess Afforestation provides most of the oxygen found in the earths atmosphere.
it allows us to reuse materials that take hundreds of years to decompose and release fumes to the earths atmosphere
Potassium is not a gas, it is a metal. It is found in mineral salts, not the atmosphere. It can be found in the atmosphere in small enough particles that move via wind currents, ocean spray, ect. but it is not a component of the atmosphere.
Helium is a gas and will take the shape of the container it is taken