Science Education
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You don't have to be an expert engineer to know that most metals are good conductors of electricity. You likely know they are also often great conductors of heat. Their conductivity means they are used in various electrical technologies, but why is this so? Have you ever wondered why metals are such good...
Meteorology is the study of weather, usually for the purposes of forecasting. However, it encompasses a large group of scientific disciplines and is often used in a more general sense of weather studies. For this reason, using the term ‘meteorological’ often refers specifically to something related to...
If you have ever been asked to draw a planet, what did you draw? While most of us will draw a circle, many will draw a ring or rings around it to give it a more ‘planet’ look. While only some of the planets in our solar system have rings, there might actually be more than you think. The first ring system...
Hold out your hand and carefully have a look at it: one thumb and four fingers. You, and many people, probably take their thumb for granted, but have you ever wondered what would have happened if you didn't have a thumb?
Did you know that you actually need your thumb to do and accomplish even the simplest...
Each and every multi-cellular organism starts with one fertilized egg which gets multiplied by division of cells. For instance, you started out as a single fertilized egg inside your mother's womb. At present, you have become a booming community of millions of cells, all of which work together to keep...
There are many different branches of biology which makes it difficult to work out how to organize them. Which ones are important enough to warrant their own department title? Which should be grouped together? Where do different branches of biology overlap with the other sciences? The reason we need to ask...
Development refers to progression of a living being from initial stages of life to maturation. This is the process with which all organs, tissues and body parts produce and grow. Development includes all the stages of life, including growth, differentiations and morphogenesis. It involves all the progressive...
Paleontology is a scientific field concerned with the study of life. It not only encompasses an interesting past, but also a hopeful, more intriguing future. Some people believe that it is related to the study of fossil fuels, but in reality, it is richer and more imbued. It is a combination of several studies,...
An atom is the basic unit of any element consisting of particles termed as neutrons, electrons and protons. Atoms of elements bond with each other to increase stability. Electric forces in them attract other surrounding atoms to make them stick together and form chemical bonds. If the outer shell of...
Do you want to know the names given to the different human hand bones? There are almost thirty bones in each of our hands. Furthermore, these bones require movable joints to perform movements with precision. Note that the hand is divided into three parts when describing the bones it contains; carpals,...
The rate at which the water of a river flows through its channel determines the river’s velocity. There are hundreds of rivers across the globe. There may be more than one or two rivers in your own town itself, but you must have noted that one river flows faster than the other. In fact, the same river may...
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It is very common to confuse everyday concepts that have developed over the course of history, such as heat and temperature or fog and mist. These are concepts whose meanings have somehow become mixed up during normal everyday usage. However, they have quite important differences. If you are curious,...
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The Sun is the central star in our solar system and provides heat and light to Earth. This is why it is sometimes referred to as the "king star" - it is what we all move around, pulled by its gravity. The Sun is considered a primary element for all forms of life on our planet. Our planet, other planets in...
We have all heard that in our neck there is an area called pharynx, but what is the pharynx function? When it is cold or when you are sick, you can experience pain in the lower throat area. It is possible that the doctor says it is a pharyngitis that is affecting this part of the body, but the doctor...
Plants are the primary producers. Life on earth is directly or indirectly dependent on plants as they are the primary source of food. Surprisingly, plants do not depend on any other organism for food. They are self sufficient and can make their own food. In this OneHowTo article we will know how plants make...
The hip joint, also known as the coxofemoral joint, is responsible for joining your torso with your lower limbs and helping to support your weight when standing and moving. Being a joint, the hip actually consists of two bones and is found within a fibrous capsule lined by a synovial membrane, which...
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Molecular biology is the area of biology that focuses on the structure of macromolecules, for example proteins and acids, that are essential to life. The theory of evolution has come a long way since Darwin published his theory back in 1859, mainly due to the fact that scientists are able to study organisms...
The octet rule in chemistry is a chemical rule that explains the rules of atoms, electrons and their forms. It was formulated by a man named Gilbert N. Lewis through a theory based on a cubical atoms. Everything within our planet is made up of atoms, and it is interesting to understand how they work....
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medium difficulty
If you have ever used a hand warmer or a heating pad, you must be aware of what hot ice is. If you like the idea of playing with ice, but cannot gather the courage because it’s too cold to touch, then hot ice is the best solution for you. Actually, hot ice is super-saturated sodium acetate that can be frozen...
Hydroponics describe a method of growing plants without soil. This practice is mainly used for sustainability and conservation. Plants can be grown hydroponically by everyone, as well as for large-scale production purposes.
In order to grow, a plant needs light, water and nutrients. Etymologically, the...
For many, the main function of flowers is to look pretty. Sitting in your grandmother's favorite vase and making even the dankest of rooms that little bit brighter, flowers are beautiful. Their aesthetic appeal, however, is not just for us humans. Their attractiveness is behind their main function as they...
Plants are living organisms with complex cycles and extravagant reproduction processes that can occur without fertilisation. These abundant and essential beings provide oxygen, as well as fruits and seeds and they are the basis for nearly all of humanity's needs and wants.
They have reproductive organs...
According to recent researches, one hour of solar energy given by the sun is enough to meet the Earth’s energy requirements for as long as one year. Solar panels need to be installed in order to convert solar energy into electricity, and these are the shining beacons that are expected to lead the world...
The human body is full of interesting facts, given that it is a complex clockwork system that seeks to work perfectly so that we can carry out and fulfill all of our daily activities without problems or setbacks. For example did you know that when a human is born the head makes up a quarter of the body?...
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One of the most important parts in a child's general education is to explain how the world was created, the place where we live and its origin. Children may want to know about the Big Bang Theory, the scientific theory which explains how life on Earth came into being. It may be a shocking fact for children...
The vagina is the muscular tube leading from the external genitals to the cervix of the uterus in women. However, in this part of the female body, there are many different areas which should be understood to better understand human nature. In this OneHowTo article we will explain the female sexual anatomy...
All living things are made up of biological cells that perform different functions as a part of the complete organism. However, when you compare and contrast plant cells with animal cells there are some major differences which are important to know and understand.
To help you understand the basic differences...
The circulatory system is made up of the heart and the connected tubes that carry blood around the body. These tubes are called veins and arteries, but do you know what the differences between these two types of blood vessel are? It is a very common source of confusion, which is why we at OneHowTo have provided...
Water is essential to life and is as vital as the air we breathe. It is therefore a major cause for concern that rivers, seas, lakes and groundwater are becoming increasingly contaminated. If you want to find out more about how water pollution affects the environment we live in, keep on reading this OneHowTo...
In this article from OneHowTo.com, we are going to explain where active volcanoes are located in the World . At present, plate tectonics explain the origin of the various geological phenomena taking place in the world, including volcanoes.
Around the year 1891 a scientist named Nikola Tesla invented an electrical resonant transformer circuit called Tesla coil. The main thought that triggered the invention of Tesla coil was that Nikola Tesla didn’t like the world becoming a web of wires to deliver power to every corner. So, he started...
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We often speak of weather or climate similarly, using both concepts interchangeably, although meteorologically that is not exactly right. And that's because these terms that are taken to be similar actually have different meanings and applications. If you need to explain the difference between weather...
Electricity has become an inevitable part of our life. Our everyday life is completely dependent on electricity. From the coffee machine to the creation of satellites and rockets; everything needs electricity in one way or the other. There are lots of traditional ways through which electricity is being...
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You must be dealing with a lot of ‘whys’ from your child, and your little scientist might be wondering about how a rainbow just appears in the sky. Explaining the scientific formation of a rainbow to your child is a little difficult, as he may not be able to understand it easily. A rainbow primarily centers...
To learn about different cloud types and characteristics, you must pay attention to shape, size, color and cloud formation to identify which type of cloud it is. The formation of different types of clouds depends on the speed of the ascending air current. Cloud formation can be classified as low, medium,...
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The moon revolves around the Earth presenting different visual aspects according to its position relative to the sun. This interaction between the movements of the sun, the moon and the earth give rise to the moon cycle. In a year the moon will complete thirteen cycles, each having a duration of 29 days....
Have you ever been asked the names of the bones in the arms and have been unable to respond? It is normal to forget some of the bones. The arm skeleton consists of three parts: the arm, the forearm and the hand. And the arm consists of the ulna, radius, and humerus. At OneHowTo we provide a list of the...
The salivary glands, in various biological species, are exocrine glands in the upper digestive system that produce and discharge saliva into the oral cavity. Saliva is a colourless liquid that is aqueous or mucous like and contains proteins, glycoproteins, carbohydrates and electrolytes, desquamated...
The body extremities are external articulated organs which carry out different locomotoive functions. Humans have four extremities, also known as limbs. On the upper side there are the arms and the lower extremities are the two legs. In the following article on what are the extremities of the human body...
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Skin is the largest and heaviest organ in the human body. It can also reveal diseases or dysfunctions of other organs. This means it can be the warning sign of some diseases or dysfunctions. Not all body skin has the same thickness. For example, in the palms of the hands and feet it is thicker than...
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