El Ninos occur every two to seven years irregularly and tend to last for a single cycle. It is typical for these events to show signs of occurring during autumn, and then they strengthen over the winter and spring, with a drop off during the summer.
A:Condensation and frost on the inside of windows occur when warm, humid air inside comes in contact with a pane of glass chilled by the outside air, according to the American Society of Home Inspectors. This reduces the temperature of the air in contact with the glass, forcing condensation of moisture. If the outside temperature is cold enough, this moisture can freeze on the glass and create interior frost.
A:Dawn, also known as daybreak, is the time of morning when the first light appears in the sky prior to sunrise, which is the appearance of the top of the sun over the horizon. Dawn occurs roughly 30 minutes before sunrise at sea level.
A:The rainy season in Brazil varies by location, according to Southern Explorations. Brazil is a large country, and its climate and geography vary widely from one place to the next. In most places, the rainy season and the highest amount of rainfall coincide with the Southern Hemisphere's summer.
A:A typhoon is the same thing as a hurricane or cyclone. They are called different names depending on where they occur. Typhoons are the name used for tropical cyclones in the Northwest Pacific, specifically to the west of 180 degrees on a map, where the Japanese Meteorological Agency tracks them.
A:Hygrometers measure the amount of moisture or humidity in the air, but there are a number of different types of hygrometers, and they display their results in different ways. Most hygrometers display their readings in the amount of water in a given volume of air, making the units milliliters per cubic centimeter. Alternatively, some hygrometers measure relative humidity, which is expressed as a percentage with no units.
A:Yung Chung-hoi of the Hong Kong Observatory explains that the sun is overhead at the equator and at a slant angle at the poles, which is why it is very hot near the equator. The other factors that influence the amount of sunshine received at different places on Earth are absorption and scattering of sunshine when passing through the atmosphere, and reflection by the surface of the Earth.
A:A tornado is a violently swirling column of air that is formed in severe thunderstorms and contains a hollow core. It is characterized by rotating air that often contains dust and debris and quickly spirals upward. The column’s bottom touches the ground, while the top extends five or more miles into the sky.
A:Every 24 hours and 50 minutes, the Earth experiences two high tides and two low tides. High tides occur every 12 hours and 25 minutes. From high tide to low tide is a span of six hours and 12.5 minutes.
A:The average winter temperature in a cold desert is usually between -20 and -30 degrees Fahrenheit. The average rainfall for these areas is only between 6 and 10 inches per year. Tundra also experiences brutally cold wind.
A:The factors that affect the temperature in an area are the latitude, height above sea level, distance from the sea, ocean currents and prevailing winds. These things work together to determine the climate of a location.
A:According to Met Office, fog forms when numerous small water droplets become suspended in the air. Fog happens most often in heavily polluted industrial areas where water can cling to the small pollution particles in the air.
A:The sun's rays are strongest daily between the hours of 10 a.m. and 4 p.m., according to Sun Safety Alliance. Experts suggest seeking shade, wearing protection or avoiding the sun altogether during these hours.
A:Hail forms as a result of water droplets being carried above the freezing level by updrafts from thunderstorms. If a hailstone falls toward warmer air at the bottom of a thunderstorm, it thaws. However, if it is caught in another updraft, it collects additional layers of ice, growing larger before falling to the ground as hail.
A:Weather patterns on Earth are driven by the unequal heating of the surface by sunlight. The Sun is the ultimate source of energy that drives wind, rain and storms across the planet. The movement of wind patterns, ocean currents and even the water cycle can all be thought of as global mechanisms for redistributing heat from the Sun.
A:The reason your windows become steamed up or foggy is that water droplets condense out of the air onto the glass. The moisture in the air is not attracted to the glass specifically; rather, the moisture condenses on the coolest surfaces in the area. The windows are usually the coldest surface in a residential home or office building.
A:Rainbows form when sunlight enters water droplets from behind the viewer. The geometry of the water droplets allows for refraction and reflection. Sunlight, which is composed of light of different wavelengths, splits into the constituting wavelengths because of refraction when it enters the water droplet, and it is then reflected from the inner surface of the droplet to the viewer. The ray undergoes refraction again when it exits the droplet.