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.
Aluminium is light and strong. It is used extensively in the manufacture of planes, space shuttles also in the building industry. It is more expensive than steel to manufacture so steel is still used extensively where weight is not a problem.
Acid Alkali Indicator Details Strong Strong Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised) Weak Strong Phenolphthalien pipette acid, and burette alkali (change from colouless to salmon pink when neutralised) Strong Weak Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised) Acid Alkali Indicator Details Strong Strong Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised) Weak Strong Phenolphthalien pipette acid, and burette alkali (change from colouless to salmon pink when neutralised) Strong Weak Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised)
Platinum is the more expensive metal because of it's scarcity. Platinum makes up 0.005 parts per million of the earth's crust, and the majority of platinum mined is used as an industrial catalyst such as the catalytic converters in cars. Titanium is the 9th most abundant element in the earth's crust. What's more, titanium is most often used in small proportions of other alloys. Pure titanium is only about as strong as low-grade steel, whereas it's alloys with steel, vanadium, molybdenum and other metals are incredibly strong and comparably light weight. Platinum is typically sought after in it's purest form.
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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.
It is light in weight and strong
Because it is light and strong.
Magnesium is not used to make aeroplanes so ... this question is wrong wrong wrong wrong
Aluminum. For some aircraft, a heavier but much stronger metal called titanium is used.
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.
Carbon fiber is a reinforced polymer used to create pieces for airplanes when engineers need something light and strong.
yes, it is
Drifter makes a very light and strong luggage set.
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.
Spider's silk.
Mainly because they are strong and comparitively light
Light weight and strong.