They aren't always made of light materials. For example a 57 Desota, very heavy hood. Depends on the manufacturer, the hood is usually made out of the same material as the rest of the car.
Because they are to be lifted by hand to expose the engine.
Less weight equals better fuel mileage. Crampled?
The less weight, the better the fuel mileage.
To reduce the overall weight of the vehicle and it's centre of gravity. Carbon fibre is also stronger than steel or aluminium.
It reduces the overall vehicle weight, those materials are often cheaper, and the hood itself isn't load bearing, so there's no real benefit to using heavier materials.
different materials...but usually a nylon so it stays light in the rain.
Hoods are lightweight for several reasons. They do not do much more than cover the engine, like help structurally in an accident, so they don't need to be heavy. Also, the engine area is already heavy enough without adding more weight to that area, further driving down fuel economy.
Most of the late model Volvos have alloy hoods.
It can be made out of many materials but is usually made from cotton
Tunic dresses are made from a variety of different materials. Tunic dresses are usually made from popular materials such as cotton, polyester, and spandex.
usually they are made of cotton, but it can vary between other light materials that are able to soak up liquids.
The materials that sarongs are made of are Rayon, Chiffon, and cotton. These materials used are all light weight .