The speed of light is 186,282 miles per second. An object travelling at the speed of light would make approximately 7.5 rounds around the Earth in one second.
The circle of illumination is the line that separates the Earth to create equal parts of day and night. It passes through the poles and allows the entire Earth to have an equal amount of time spent during the daylight and nighttime hours.
A person who studies space is called an astronomer or astrophysicist. These types of scientists are responsible for the discovery of all of the planets, stars, asteroids and other extraterrestrial objects.
The meteorites that land on earth can be made of stone, iron or stony iron. A few meteorites are made of volcanic glass, but scientists aren't sure that all of these meteorites are extraterrestrial in nature. They believe some of these meteorites are formed when material from an impact crater liquefies and then turns to glass as it's ejected into the atmosphere.
Gravity is one of the fundamental forces of the universe, and it keeps us on Earth because it is relentlessly attractive. Every massive particle exhibits gravity by pulling closer to every other particle. The strength of this interaction is dependent on two quantities: the amount of mass and the distance between objects. It is possible to escape Earth's gravity if you have enough energy to speed up sufficiently.
The Hubble Space Telescope was created to capture detailed images or objects that are too far away to be viewed with conventional telescopes. The Hubble's instruments create images that are far superior to those of terrestrial observatories, which suffer from the effects of atmospheric distortion.
With an atmospheric temperature of -224 degrees Celsius and a surface temperature of -197 degrees Celsius, Uranus is a very cold planet with strong winds. It is the coldest planet in the solar system.
Algae are a type of plant that usually grows on the surface of still water, such as a small pond, when there is an ecological imbalance. In some cases, algae is able to grow at a rapid rate, potentially spreading across the entire surface.
The mesosystem refers to the point in which two social microsystems merge. One example of a mesosystem is the combination of the home and school environments. These intersect and become a mesosystem when events, situations, work and friendships cross back and forth between both environments.
Biology is the branch of science that deals with the study of living things. It studies any species that is considered to be alive, including minute bacteria that are made up of a single cell. This sect of science aims to discover how the systems of an organism work, how organisms behave in their environments, how species have evolved and how different ecosystems affect one another.
Drastically reducing the amount of oxygen traveling to the brain could temporarily cause a person to lose consciousness. Although incredibly dangerous, it is possible to self-induce unconsciousness either by reducing the oxygen intake through the lungs or by causing the blood pressure to drop.
Plants get rid of waste through a process called excretion. Different waste products are excreted in different ways.
Algae live in bodies of water and damp places and are commonly found in both aquatic and terrestrial environments. Terrestrial algae mostly live in moist, tropical areas. They prefer wet places, because they do not have vascular tissues and the other necessary adaptations to survive on land.
Sulfur is found naturally around hot springs, volcanoes and in meteorites. It can also be found in cinnabar, gypsum, Epsom salts, stibnite, sphalerite, iron pyrites, barite, celestite and galena.
Aluminum is a dull silvery metal that has a bluish tint. It is ductile and malleable, and it is a good conductor of heat and electricity.
Methane gas is not considered dangerous to humans by inhalation. Exposure to methane gas in air with low oxygen levels may cause dizziness, headaches and a feeling of fatigue with no lethal effects.
By volume, dry air is 78.09 percent nitrogen and 20.95 percent oxygen, accounting for over 99 percent of the total volume. The remaining 1 percent is made up of argon, carbon dioxide, neon, methane, helium, krypton, hydrogen, xenon, ozone, nitrogen dioxide, iodine and trace amounts of carbon monoxide and ammonia.
Water evaporates because individual water molecules break free of the bonds that hold them all together as a liquid. While water evaporates more in heat, it is possible for it to evaporate in cold conditions.
A chemical reaction occurs when a cake bakes. The materials in the batter are changed into a different substance. If the cake burns, that is a separate chemical reaction. In fact, any type of burning, such as a piece of paper or a stick of wood, is a chemical reaction.
There are nearly an infinite number of colors, according to the Chester F. Carlson Center for Imaging Science at the Rochester Institute of Technology. However, not all of them are distinguishable by the human eye.
Mixing yellow and purple together results in brown and warm gray, depending on the amount of each color used. Mixing two complementary colors together, such as red and green, blue and orange or yellow and purple, will produce a different shade of brown.
Sage green can be made by mixing the colors next to green on the color wheel, which are blue and yellow. However, sage green is a particular green and to find the right color balance may be difficult.
To make the color orange, you will need paints in red, yellow and white as well as a small dish and paintbrush for mixing. Mix the two primary colors and then add white to achieve the desired shade. The process should take only a few minutes, depending on how much of the color orange is being produced.
Intermediate colors are made up of yellow-orange, orange-red, red-violet, blue-violet, blue-green and yellow-green. These colors are combinations of both primary and secondary colors.
The colors that never result from combining two other colors are the primary colors of pigment, while the colors that produce white light when combined are the primary colors of light. Each of these categories includes three primary colors.