If the questioner means "alkaline earth metal" rather than simply "earth metal", the answer is magnesium. Aluminum is also an "earth metal" in the sense that it occurs naturally as an oxide on earth and would also be an accurate answer to the question as asked.
Oxygen is a light element with an atomic number of 8. In terms of its physical properties, oxygen gas is lighter than many other gases, such as carbon dioxide or nitrogen, which makes it an essential component for life on Earth.
A strong base is a base that readily accpets protons and is fully dissociated in water. A weak base is the complete opposite to it. Note that in English the term is "weak base". "Light base" doesn't really mean anything, even if that would ordinarily be a better translation.
Weight is the gravitational force exerted on a person or object at the surface of the planet. Weight and mass are measured in kilograms. Unlike mass, weight varies with the strength of the gravitational force. Mass is the amount of matter in an object.
Titanium is an ideal choice for body implants due to its strength, light weight, and biocompatibility. It is resistant to corrosion and is well tolerated by the human body, making it a common material for medical implants such as joint replacements and dental implants.
Beryllium (Be) is the element in Group 2 that is lightweight and has a high melting point. It has a low atomic number and relatively small atomic mass compared to the other elements in Group 2, while also having a higher melting point due to its strong metallic bonds.
It is light in weight and strong
Because it is light and strong.
Magnesium is used in airplanes primarily for its light weight and strength. It is often used in manufacturing parts such as engine components, landing gear, and interior structures to help reduce the overall weight of the aircraft and improve fuel efficiency.
Aluminum. For some aircraft, a heavier but much stronger metal called titanium is used.
Carbon fiber is a reinforced polymer used to create pieces for airplanes when engineers need something light and strong.
yes, it is
They make tires just for airplanes. They've got to be light, but also strong enough to withstand being instantaneously loaded to many times the weight of the airplane without blowing out.
Drifter makes a very light and strong luggage set.
Spider's silk.
aluminum is light, strong and inexpensive. Not all airplanes use aluminum though. Wood is used on some, as is carbon fiber and composite materials. Aluminum is probably the most common though.
Mainly because they are strong and comparitively light
Light weight and strong.