The Census reported that 21,455 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized group quarters, and 0...
Sunset
Twilight
Darkness
Most people know that sunset is the time when the sun goes down. But did you know that the sun doesn't actually set? Instead, Earth rotates into darkness, giving us the illusion that the sun is setting. So what causes sunset?
Well, it's a combination of things. The Earth's atmosphere scatters sunlight in every direction, but blue and violet light are scattered more than other colors. This is why the sky is usually blue during the daytime. As the sun gets lower in the sky, the atmosphere becomes thicker and more dense.
This scattering of sunlight happens to a greater extent, and we see red and orange light more than blue and violet light. That's why sunset is usually a beautiful red or orange color. So next time you see sunset, remember that you're actually seeing Earth rotate into darkness!
La Crescenta is located in Los Angeles County, California, and occupies the Crescenta Valley. It is bordered on the north by Glendale, on the east by Montrose, on the south by San Fernando and by La Cañada Flintridge on the west. The population of La Crescenta was 21,455 at the 2010 census, up from 17,441 at the 2000 census. La Crescenta is a city in the San Fernando Valley. According to the United States Census Bureau, the city has a total area of , all land. The elevation is 1200 feet.
Lake Hughes, located east of the City, is an artificial lake created in the 1920s when the Van Nuys Dam was completed. The dam blocks the valley's watershed and creates a reservoir, impounding over of water.
La Crescenta is located in Southern California in the San Fernando Valley. The San Fernando Valley is east of Downtown Los Angeles. The eastern boundary of the valley is the foothills of the Angeles National Forest.
According to the Köppen climate classification, La Crescenta has a warm-summer Mediterranean climate.Locations in the city close to major freeways and the Los Angeles Metropolitan Area often have a more moderate climate. La Crescenta averages 1.8 inches (4.5 cm) of precipitation annually. The warmest month is July, with an average temperature of 78.5 degrees F (24 degrees C), and the coldest is January, with an average temperature of 37 degrees F (3 degrees C). La Crescenta receives an average of 32 inches (81 cm) of rain annually.
Summer sun and mild temperatures make La Crescenta an ideal place to live, while winters bring less humidity and mild temperatures. This combination gives the city a moderate climate, perfect for year-round activities. There is a greater than average chance of experiencing a natural disaster in La Crescenta, with a 1 in 3800 chance of a major tornado.
The 2010 United States Census reported that La Crescenta had a population of 21,455. The population density was 2,220.5 people per square mile (836.4/km²). The racial makeup of La Crescenta was 11,452 (57.5%) White, 207 (1.5%) African American, 480 (2.9%) Native American, 920 (4.7%) Asian, 59 (0.3%) Pacific Islander, 4,277 (21.1%) from other races, and 1,592 (7.8%) from two or more races. Hispanic or Latino of any race were 11,993 persons (56.7%).
The Census reported that 21,455 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized.
}As the sun sets, the sky slowly grows dark. For many people, this is a time to relax and wind down for the day. But have you ever wondered exactly when it gets dark? The answer may surprise you.
Did you know that darkness actually begins long before the sun sets? As the sun gets lower in the sky, its light has to travel through more atmosphere. This filters out some of the blue light, making the sun look redder. At the same time, shadows get longer and darker. So by the time the sun finally dips below the horizon, darkness has already begun to fall.
Of course, not all places on Earth experience darkness at the same time. Near the equator, the sun sets and rises almost directly overhead. This means that there is less of a difference between daytime and nighttime. Closer to the poles, however, the sun stays low in the sky for much of the year. This leads to longer periods of darkness during wintertime.