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
The major difference between young and old mountains is the level of erosion within an entire mountain range. For example, the Rocky Mountains and Himalayan Mountains are young because they are still rugged, with very few signs of erosion. These mountains are still uplifted due to tectonic forces. The Appalachian Mountains and Ozark Mountains have flatter tops and have been eroded longer, so they are older.Full Answer >
Caverns are types of caves that have most of their open spaces located underground. Various passageways sometimes connect caves as a result of the weathering of rocks. Caves are hollow areas that are sometimes located within hills or mountains, and they have one or more openings.Full Answer >
In waves, the crest appears as the highest point, while the trough is the lowest, forming a dip or valley in the wave's motion. The crest, also called the peak, forms the maximum height of every wave, including water waves, radio waves and electrical waves. The distance and height between the trough and crest varies depending on the type of wave and local conditions, such as wind speed and direction.Full Answer >
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 >