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www.reference.com/article/rock-band-f4489c734dc80202

A rock band is a group of musicians who play rock music together. Rock is an extremely diverse genre, encompassing a range of styles and sounds, but it is typically based around guitars, bass, drums and vocals.

www.reference.com/article/rock-salt-made-9b69cec1825a1d5e

Rock salt is made of a 1:1 ratio of sodium to chlorine. Rock salt's chemical formula is NaCl, which means that one molecule of rock salt is composed of one atom of sodium (Na) and one atom of chlorine (Cl).

www.reference.com/article/moon-rocks-made-895e6eb32d7b50fc

Moon rocks, collected from the surface of the Earth's only natural satellite, are mainly composed of oxygen, silicon, magnesium, iron, calcium and aluminum, in varying amounts. Other trace elements are also present depending on the region of the moon from which the sample was collected.

www.reference.com/article/causes-rock-slide-6ff1fcec95b6792b

A rock slide occurs when rocks sit on a sloped plane, and added weight or water causes them to slide down. Heavy rains weigh on the rocks and dirt, and also make the underlying surface slick. Clay or dirt erosion under rocks adds to the potential for a rock slide.

www.reference.com/science/hardest-rock-earth-402c36f284c19e4c

There's no single hardest rock on Earth. The strongest types, on the other hand, include quartz in their makeup: quartzite, quartz sandstones, rhyolites and granites, according to the MadSci Network.

www.reference.com/article/rock-cycle-84103af41f7aff2b

The rock cycle is the sequence of stages that a rock goes through from creation to the point at which it breaks down and is reformed. The geological processes of sedimentation, weathering, erosion, heat, pressure, cooling and melting all create distinct stages in the rock's life cycle.

www.reference.com/business-finance/online-smart-serve-test-hard-22556d0bb59f234d

The final online certification test for the Smart Serve Responsible Alcohol Beverage Training Program is designed for maximum information retention and requires a pass rate of 80 percent. The program, a one- to two-hour course, consists of four modules with interactive activities and quizzes at the

www.reference.com/article/kind-rocks-moon-b6b9ebf9624efee0

The rocks brought back to Earth from the moon fall into four categories: mare basalts, impact breccias, pristine highland rocks and regolith. Basalts are igneous rocks formed by cooled lava deposits. Breccias are formed of smaller pieces of other rocks that are fused together by meteorite impacts. P

www.reference.com/article/hard-hard-rock-maple-furniture-555001c236125a4b

Hard rock maple furniture can withstand 1,450 pounds of force on the Janka hardness scale. This means it takes this much force to embed half of a small steel ball into the wood.

www.reference.com/article/valuable-rocks-25e34aa4e707d034

The most valuable rocks are ores. These rocks contain minerals or metals that can be of great commercial value, such as gold, platinum, copper, iron, nickel or silver.