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There are actually a number of ways to make a balloon lift, without helium. Hydrogen is even less dense than helium (but has the disadvantage of also being highly flammable). And since hot air is less dense than cooler air, you can lift a balloon just by heating air. Since hot air is less expensive than either helium or hydrogen, that is a popular technique.
There are actually a number of ways to make a balloon lift, without helium. Hydrogen is even less dense than helium (but has the disadvantage of also being highly flammable). And since hot air is less dense than cooler air, you can lift a balloon just by heating air. Since hot air is less expensive than either helium or hydrogen, that is a popular technique.
helium molecules are much smaller than the molecules of wood pulp that make up the structure of paper. Thus helium gas will quickly dissipate through the paper itself, and into the environment without producing the necessary "lift".
No. they dont
Helium is a gas.
The sun fuses hydrogen to make helium. It will be several billion years before the sun fuses helium to make heavier elements.
The process of compressing plant matter to make coal takes millions of years.
helium balloons and make your voice sound weird
no.
no
the answer is that Hydrogen and Helium make up the first period in the priodic table
Zeppelins use lighter than air gasses (like helium or hydrogen) to get lift from the ground and then usually have ducted fans (propellers with a big ring around it) to move the zeppelin