Earth and Space Science
(10)
The spring equinox, also called the vernal equinox, marks the beginning of spring in the Northern Hemisphere. It occurs when the sun crosses the equator and is directly overhead, resulting in equal amounts of daylight and darkness. The vernal equinox has been celebrated for thousands of years in various...
As we approach the shortest and longest days of the year, we often hear about the solstice, a term unfamiliar to many. The term came to English via Anglo-French in the 14th century. Its origins can be traced down from the Latin word solstitium, meaning “sun”, and “-stit-”, meaning “standing”. A winter solstice,...
medium difficulty
medium difficulty
In recent years volcanoes have been quite active and we know of famous cases of eruptions and ash clouds that have paralyzed air traffic and affected thousands of people. Thanks to current monitoring technologies it is difficult for a volcanic eruption to catch us off guard but if you live near a volcano...
It is not an easy task to determine which is the largest planet in the universe as the technology created by humans has not yet enabled the discovery of a large part of the universe. In fact, 99% of the universe is still believed to have remained undiscovered by mankind.
So, OneHowTo.com reveals which...
Surely you have asked yourself this question more than once as, from our perspective, we might imagine the Moon to be a huge sphere that may even exceed the size of the Earth. Although most of the planets orbiting our galaxy have more than one satellite, in our case we have only one moon, the Moon, which...
If you want to learn a little more about climate and meteorology, or even make your own weather forecast, read this series of tips to help know if it's going to rain. Meteorologists or climatologists have studied for years in college and use complex computer systems and various criteria to predict the weather....
low difficulty
Ursa Major, also known as the Great Bear, is a constellation that can be seen during the whole the year in most places in the Northern Hemisphere. The constellation contains the asterism which is commonly known as the Big Dipper or the Plough. Ursa Major is located in the northern celestial hemisphere, extremely...
low difficulty
A rainbow is a meteorological phenomenon produced by the appearance of a spectrum of light in the sky. It occurs when the sun's rays pass through water droplets in the atmosphere, thus creating a multicoloured arc that is visible to the human eye. If you're interested in learning how and why a rainbow is...
low difficulty
Rainbows are one of the most beautiful phenomena in meteorology. They appear when the sun's rays pass through water droplets in the atmosphere, leading to the appearance of a spectrum of light, which is commonly known as a rainbow. This is formed by 7 colours which always appear in the same order. Do you...
A Moon eclipse or lunar eclipse occurs when the planet Earth crosses between the Sun and the Moon, creating a perfectly straight line between all three. This astronomical phenomenon occurs more often than solar eclipses, but is still a much-anticipated natural phenomenon that many people find amazing...
Back to top