1 For example, Granite is a rock made of the minerals: quartz, mica, and other minerals. 2  Students will know that rocks and minerals are found in the earth's crust. 3  Students will realize that rocks and minerals are used to produce many important materials.
Muscle pain (myalgia) are pulling, gut-wrenching and spasmodic pain in the muscles: the term myalgia is composed of the Greek words myos for muscle and algos for pain. Muscle pain can spread (diffuse) or (local) occur in a certain place of the body.
Often, people who experience muscle aches can easily pinpoint the cause. This is because most instances of myalgia result from too much stress, tension, or physical activity. Some common causes include: 1  muscle tension in one or more areas of the body. 2  overusing the muscle during physical activity.