According to the Boston Globe, the primary difference between bronze and brass is that bronze is made from the combination of copper and tin, while brass is made from copper and zinc. Both are copper alloys, meaning that they are mixtures that are in the solid state.Know More
Bronze was first discovered around 3500 B.C. As it is harder than iron and resists corrosion, people of the time began to use bronze to make weapons. This led people to name this time period the Bronze Age. Brass was not discovered for about 3000 more years. This is largely due to the fact that zinc is very difficult to find in its pure form on Earth. To produce the first brass, metallurgists smelted copper with calamine, which is a zinc ore. During the smelting process, the zinc would immediately precipitate from the ore and bond with the copper.
In modern times, copper is mixed with varying amounts of other minerals to produce specialized bronze or brass. These minerals alter the properties of the two alloys, making them harder, softer or less brittle. Because many different minerals are incorporated with copper to make these modern variations, it is often hard to tell the difference between bronze and brass visually.Learn more about Earth Science
Rotation refers to the Earth’s spin around its internal axis, while revolution refers to the Earth’s orbital motion around the sun. The Earth rotates on its axis once every 24 hours and revolves around the sun once every 365.25 days.Full Answer >
Hardwood trees reproduce through seeds containing a covering, while softwood trees reproduce using a naked, uncovered seed. Examples of hardwoods are apple, acorn and hickory trees, whereas softwoods include pine, firs and spruce trees.Full Answer >
The Minnesota Department of Natural Resources explains that there is no official distinction between streams and rivers, but streams are commonly held to be smaller bodies of water that feed into larger bodies, namely rivers. Both streams and rivers possess currents and are somewhat narrow, or they are at least constrained between two banks.Full Answer >
Longitude indicates distance from the prime meridian, whereas latitude indicates distance from the equator, and these measurements cross one another rather than being equivalent. These lines are depicted on maps as a grid crossing the entire surface of the Earth.Full Answer >