Aluminium is way lighter than iron, and therefore the plane can get off the ground.
The amount of protons in the nucleus of an iron atom is greater than in that of an aluminum atom.
Beryllium is less dense and lightweight. it makes for better use as an alloy! =)
Because Iron Man is better than batman
Iron man is better than superman
The are much more efficient than the ones from brfore...... the are much safer and can last longer :) Hope that helps :P
Copper pans are not necessarily better, but copper certainly conducts heat a lot better than iron.
airplanes have huge engines unlike cars the also run on a better type of fuel than cars but jet fuel would ruin a car
Airplanes were invented because people wanted to fly like birds.
Aluminium wasn't used until the twentieth century due to the following reasons. They are difficult to extract in comparison with iron, they have higher abundance by less surficial concentration.
Gold armor provides better health regeneration and protection than iron armor does.
Copper is better conductor than iron because copper has higher electron affinity of 1.22948 eV than iron which is 0.16299 eV.
iron is stronger than wood, so an iron plough would last longer than a wooden one.