Wool can be spun or made into yarn. The yarn is used to weave fabric or material. The yarn of wool can also be knitted into fabric or clothing like jumpers.Alpaca, mohair, angora, camel, cashmere and vicuna are all separate types of wool.
Wool can also be made into felt after it is boiled in hot water and rubbed together. Felt is a kind of fabric that is not woven. Felt can be used to make clothes to keep warm in cold weather.
Australia is the world's largest producer of raw wool, growing about 30 percent of the total world supply. Less wool is produced than in the middle 20th century, because people use more synthetic fibers.
Sheep were domesticated (tamed) in southwestern Asia about 11,000 years ago and now about 1 billion are now widely bred around the world.
Wool is produced by follicles which are small cells located in the skin. These follicles are located in the upper layer of the skin called the epidermis and push down into the second skin layer called the dermis as the wool fibers grow. Follicles can be classed as either primary or secondary follicles. Primary follicles produce three types of fiber, Kemp (wool), medullated fibers and true wool fibers. Secondary follicles only produce true wool fibers. Medullated fibers share nearly identical characteristics to hair and are long but lack crimp and elasticity. Kemp fibers are very coarse and shed out.
Rag is a sturdy wool fiber made into yarn and used in many rugged applications such as gloves. Worsted is a strong, long-staple, combed wool yarn with a hard surface. Woolen is a soft, short-staple, carded wool yarn typically used for knitting
Saw
A saw is a tool used to cut things.
There are many kinds of saw. Some of them are hand tools that work with muscle power, like the saw in the picture. Some saws have other sources of power and can be very powerful, such as a chainsaw that is used to cut down trees.
The work carried out with a saw is usually noisy. Using a saw to cut materials is "dangerous" because of sharp teeth. Care must be taken not to let sharp edges touch the skin. Parts of the material being cut can fly off the work and become a hazard to breathing, to eyes and to the skin.
Or hand powered saws. These use the motion of a person's arm to make a cut.
Many saws are designed to cut on the push stroke (when the saw is pushed forward).
The is a type of saw used in woodworking. These saws typically cut on the pull stroke (when the saw is pulled backwards).
There are several kinds of powered saws. Some are powered by electricity from a . Others are powered by batteries. Still others can be powered by Internal combustion engines, steam, or water power.
A saw designed to cut down trees or cut branches from trees is a chainsaw. A chainsaw is named for the row of teeth attached to a flexible chain. The cut is often very rough and often has splinters.
Circular saws use a round blade, usually between 7 and 10 inches. They are often very powerful and can cut through hard or soft wood. They use interchangeable round blades. The blade can be designed to cut any of a number of kinds of materials from steel, to wood, to masonry.
Jig saws move the blade up and down to cut through materials. The stroke (or up and down movement) is usually less than one inch (25.4 mm). These saws are very good for making curved cuts. Jig saws use a variety of interchangeable blades for cutting different materials. Some blades make very smooth cuts.
Tennessee
Tennessee is a state in the United States. Its capital is Nashville, which is also the country music center of America. It is the home of the Smoky Mountains which are a famous tourist attraction. Other well known cities and towns are Memphis, Knoxville, Chattanooga, Oak Ridge, Lynchburg, Carthage, Lawrenceburg, Clarksville, Lebanon, Pigeon Forge, Murfreesboro, and Gatlinburg. Tennessee touches eight states: Kentucky and Virginia to the north; North Carolina to the east; Georgia, Alabama, and Mississippi on the south; Arkansas and Missouri (by the Mississippi River) to the west. Tennessee ties Missouri as the state bordering the most other states.
Tennessee was the 16th state to join the nation, on June 1, 1796
Several professional sports teams play there, including the Tennessee Titans of the NFL, the Memphis Grizzlies of the NBA, and the Nashville Predators of the NHL.
Cherokee and other Native American tribes lived in Tennessee before the arrival of Europeans. African American slaves worked on plantations in the state.
Connecticut
Connecticut is a state in the United States. Its capital is Hartford, and its largest city is Bridgeport.
The highest peak in Connecticut is Bear Mountain in Salisbury in the northwest corner of the state. The highest point is just east of where Connecticut, Massachusetts, and New York meet (42° 3' N; 73° 29' W), on the southern slope of Mount Frissell, whose peak lies nearby in Massachusetts.
The Connecticut River cuts through the center of the state, flowing into Long Island Sound, Connecticut's outlet to the Atlantic Ocean. Further information: List of Connecticut rivers
The state, although small, has regional variations in its landscape and culture from the wealthy estates of Fairfield County's "Gold Coast" to the rolling mountains and horse-farms of the Litchfield Hills of northwestern Connecticut. Connecticut's rural areas and small towns in the northeast and northwest corners of the state contrast sharply with its industrial cities, located along the coastal highways from the New York border to New Haven, then northwards to Hartford, as well as further up the coast near New London. Many towns center around a small park, known as a "green," (such as the New Haven Green). Near the green may stand a small white church, a town meeting hall, a tavern, and several colonial houses. Forests, rivers, lakes, waterfalls and a sandy shore add to the state's beauty.
The northern boundary of the state with Massachusetts is marked by the distinctive Southwick Jog/Granby Notch, an approximately 2.5 mile (4.0 km) square detour into Connecticut slightly west of the center of the border. Somewhat surprisingly, the origin of this anomaly is uncertain, with stories ranging from surveyors who were drunk, attempting to avoid hostile Native Americans, or taking a shortcut up the Connecticut River; Massachusetts residents attempting to avoid Massachusetts' high taxes for the low taxes of Connecticut; Massachusetts' interest in the resources represented by the Congamond Lakes which lie on the border of the jog; and the need to compensate Massachusetts for an amount of land given to Connecticut due to inaccurate survey work. Perhaps the only suggested reason which can be safely ruled out is that the jog is necessary to prevent Massachusetts from sliding out into the Atlantic Ocean! In any event, the dispute over the border retarded the development of the region, since neither state would invest in even such basic amenities as schools for the area until the dispute had been settled.
The southwestern border of Connecticut, where it abuts New York State, is marked by a panhandle in Fairfield County, containing Greenwich, Stamford, Fairfield, Westport, Wilton, and Darien, housing some of the wealthiest residents in the world. This irregularity in the boundary is the result of territorial disputes in the late 1600s, culminating with New York giving up its claim to this area, whose residents considered themselves part of Connecticut, in exchange for an equivalent area extending northwards from Ridgefield, Connecticut to the Massachusetts border as well as undisputed claim to Rye, New York.
Areas maintained by the National Park Service include Appalachian National Scenic Trail; Quinebaug & Shetucket Rivers Valley National Heritage Corridor; and Weir Farm National Historic Site.