Provide a 17 pages analysis while answering the following question: Questions and Answers: Astronomy. Prepare this assignment according to the guidelines found in the APA Style Guide. An abstract is required. The Sun influences tides, although its tide-producing force is less than half the strength of the Moon’s. Solar tides interact with lunar tides. When the Sun and Moon are in quadrature, that is, at quarter moons, low tides are lower than average, which is known as neap tides.

The twinkle, or scintillation, of stars, is caused by the turbulence in the atmosphere of the Earth. The atmosphere has many layers of turbulent (moving) air, which are different in temperature and density. When the light from a star passes through the atmosphere, each layer of air bends (or refracts) the light, usually in a random direction. Then, we perceive that the stars are twinkling.

A light-year is a unit of distance used by astronomers in order to describe the distances to stars and galaxies. It represents the distance that light travels in one year. The speed of light in empty space is about 300,000 kilometers each second, which means that one light-year is equal to about 10 trillion km.

The distance from Earth to Proxima Centauri, the nearest star beyond the solar system, is about 4.24 light-years because it takes light about 4.24 years to travel from Earth to Proxima Centauri (and vice versa).

A solar eclipse occurs at New Moon when the Earth passes through the Moon’s shadow. This shadow has an umbra (an inner, uniformly dark cone-shaped region), and a penumbra (an outer, lighter gray fan-shaped area).

A solar eclipse can be seen over a small portion of the dayside of the Earth. Its appearance depends on the observer’s location relative to the shadow. Observers located within the umbra can see a total solar eclipse, whereas those situated within the penumbra observe a portion of the Sun covered by the Moon (partial eclipse). Outside the penumbra, no eclipse can be seen.

A lunar eclipse occurs only at Full Moon when the Moon passes through the Earth’s shadow. This shadow consists of two parts: umbra and penumbra, as the Moon’s.&nbsp.

Write a 20 page essay on Active lifestyles.

WHO describe sedentary lifestyles as a major underlying cause of death, disease, and disability? Approximately two million deaths every year are attributable to physical inactivity. Preliminary findings from a WHO study on risk factors suggest that sedentary lifestyle is one of the ten leading causes of death and disability in the world. Physical inactivity increases all causes’ mortality, doubles the risk of cardiovascular disease, type II diabetes, and obesity. It also increases the risks of colon and breast cancer, high blood pressure, lipid disorders, osteoporosis, depression and anxiety.

Beginning to regularly exercise at any point throughout adulthood is likely to raise your longevity. Those individuals who had lived a sedentary lifestyle all through middle adulthood nevertheless benefited from getting in better shape even during their 70s or 80s. The earlier you make a commitment to exercise, the more you are probable to extend your life span. The earlier you start to habitually exercise, the greater the long-term advantages. Participation in invigorating activities, at least moderate in intensity, is important for maintaining your health. The types of recreational pursuits reported most commonly by the active college graduates included swimming, racquet sports, running, cycling, hiking, skiing, rowing, and yard work. Being slim does not lessen the need for regular exercise. It is certainly better to be overweight but otherwise fit than it is to be thin but inactive. Though, it is relatively rare to remain obese and not to finally develop added health problems such as high blood pressure or diabetes.

Despite the strong evidence that physical inactivity or a sedentary lifestyle is a risk factor for coronary heart disease, stroke, cancer, hypertension, and other chronic diseases, only 25% of U. K. adults in the late 1990s exercised at levels suggested to improve health, and only 10% exercised at levels intended