Throughout human history people have been fascinated by the movements of the stars, planets, moon, and sun. One of the most impressive things for these ancient humans to witness were eclipses. Both of the sun and of the moon. A Solar Eclipse happens when the moon passes in front of the sun, blocking its light. […]
One of the most prominent features of the night sky is our Moon. The way the Moon looks constantly changes in a predictable pattern. We call these changes phases. What are the phases of the moon, and what causes them? There are eight phases of the moon, and they are: New Moon, Waxing Crescent, First […]
As a civilization, we do a lot of communication, in order to function. This communication takes place using a variety of technologies. Some of which are analog and some of which are digital. Analog signals are those where the information is conveyed by a continuously variable physical quantity. These are the kinds of signals that […]
Waves move energy through the Universe. As this energy moves, it often causes substances to vibrate or react in different ways. Especially when it comes into direct contact with an object or substance. We can predict how energy will interact with objects based on the type of wave it is. There are three main types […]
As long as your hearing is functioning properly you can hear things around you. What is sound? How does noise travel from an object where it is produced to your ears, so that you can hear it? Sound is a type of energy that travels through the air, or any other medium, as a vibration […]
Energy moves through the Universe all the time. It is transferred from one substance to another. What does the movement of energy look like? When energy moves through an object, it creates waves. These waves carry the energy through the object until they reach the end. There are two types of waves: mechanical and electromagnetic. […]
Living things have many requirements. One of the most important of these is that they must obtain food. They get this food from the environment. The ultimate source of food energy is the sun. The sun produces light, and this light is used by plants in a process called photosynthesis. Photosynthesis converts some of the […]
Living things interact with their environments in order to thrive and live. Some of the things they interact with are biotic, while some are abiotic. Biotic and abiotic are just big science words that mean living and non-living. Biotic factors are living organisms that affect an ecosystem. They can be plants, animals, or other organisms. […]
Water pollution is a big problem. There are many causes of water pollution. Some of the main causes of water pollution are factories, sewage, and chemicals from farms. Water pollution harms the environment in many ways. It can kill animals and plants. It can make people sick. And it can pollute drinking water. Technology can […]
Pollution is a common problem in advanced civilizations. From Ancient Rome to the Modern era, civilizations have always left different types of pollution behind. Such as sewage, garbage, and so forth. Modern technologies can create new kinds of more toxic pollution that the environment has never had to deal with before. The advancement of civilization […]
