Education and Communication

Last modified: 2025-01-23 12:01

An easy way to think of a chemical reaction is to think of the process of making a cake. We mix all the ingredients together (flour, butter, salt, sugar and eggs), and after baking, this mixture turns into food (cake). In chemical terms, the equation is the recipe, the ingredients are the "

Last modified: 2025-06-01 06:06

Poison sumac, or Toxicodendron Vernix, is a plant native to the eastern United States and Canada. Most people will experience a painful allergic reaction if they touch any part of this plant, such as red itchy spots on the skin or blisters. Learn how to identify poisonous sumacs by their appearance and habitat, so you can avoid unwanted occurrences.

Last modified: 2025-01-23 12:01

Are you studying for a biology exam? Forced to stay in bed with the flu and curious to know what type of microorganism is causing you to get sick? While bacteria and viruses can cause you to get sick in similar ways, they are actually very different organisms with very different properties.

Last modified: 2025-01-23 12:01

There are more than sixty species of oak in the US alone and more than hundreds of others worldwide. Identifying oak leaves is a challenge in itself. To assist in narrowing the identification process down to a specific tree, oaks can be divided into two basic categories based on leaf shape alone:

Last modified: 2025-01-23 12:01

Mountain climbing or nature exploration is a fun activity. However, if you accidentally touch poison oak, your skin will experience itching and a blistering rash. As long as the characteristics are known, the leaves of this plant actually have an easily recognizable appearance.

Last modified: 2025-01-23 12:01

Prokaryotes and eukaryotes are terms used to define types of organisms. The main difference between the two is the presence of a "true" nucleus: eukaryotes have a single cell nucleus, while prokaryotes have no cell nucleus. While this is the most easily recognizable difference, there are other important differences between the two organisms that can be observed under a microscope.

Last modified: 2025-01-23 12:01

Mold is a mushroom that has many uses. Molds are very common; These reproducing spores are found everywhere, including in the air and on various surfaces. Interestingly, molds are organisms that can transmit disease to humans and spoil food, but molds are used to preserve other foods and produce components used in the production of medicines.

Last modified: 2025-06-01 06:06

The oak tree consists of hundreds of species and is spread in various regions of the world. This popular tree has been a means of shade and beauty for centuries and continues to be a common tree to this day. In order to accurately identify an oak tree, it is very important to study the main characteristics that make this type of tree beautiful and unique.

Last modified: 2025-01-23 12:01

The Punnett quadrilateral simulates two organisms that reproduce sexually, and examines one of the many genes that parents pass on to their offspring. A complete quadrilateral shows each possible heritable gene, and the probability of each. This is why the Punnetian quadrilateral is a great way to understand basic genetic concepts.

Last modified: 2025-01-23 12:01

Climate change is one of the biggest problems in the world. You may want to know what can be done about this. If you want to save the environment and help reduce the greenhouse effect, planting trees is a great natural solution. We have answers to some of the questions that have been bothering you.

Last modified: 2025-06-01 06:06

Climate change does exist and is capable of affecting the quality of life of everyone on the planet unless we unite to prevent it. Governments can and should be the focus of the fight against climate change by issuing regulations that support it.

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Global Warming is an increase in the average temperature of the Earth's surface due to the effects of greenhouse gases, such as carbon dioxide emissions due to burning fossil oil or deforestation, so that the heat that should be released from the Earth is trapped.

Last modified: 2025-01-23 12:01

For the lucky few, doing well in physics is indeed a talent. For others, however, getting good grades in physics takes a lot of hard work. Fortunately, by learning important basic skills and doing lots of practice, almost anyone can master their physics material.

Last modified: 2025-01-23 12:01

Ever wondered why parachutists eventually reach full speed when they fall, when the force of gravity in a vacuum causes objects to accelerate uniformly? A falling object will reach a constant velocity when there is a drag force, such as the drag of air.

Last modified: 2025-01-23 12:01

Atoms can gain or lose energy when an electron moves from a higher orbit to a lower orbit around the nucleus. However, splitting the nucleus of an atom will release much more energy than the energy when electrons return to a lower orbit from a higher orbit.

Last modified: 2025-01-23 12:01

Power factor correction allows you to calculate active, real, reactive power and phase angle. You will use the equation of a right triangle. So, to calculate angles you need to understand the laws of cosine, sine and tangent. You also need to know the Pythagorean law (c² = a² + b²) to be able to calculate the size of the sides of a triangle.

Last modified: 2025-06-01 06:06

A Faraday cage (or Faraday shield), named after Michael Faraday, is a device used as a shield against electromagnetic radiation. Faraday cages can be made by joining together a cover containing conductors, or a mesh of similar material. This creates a shielding effect on any object in the cage and protects the object from radiation.

Last modified: 2025-06-01 06:06

Ever looked through a kaleidoscope? Beautiful huh? The sun's rays glow on the colorful beads and glass and reflect in the mirror creating a beautiful pattern that you can see from the inside. If you want to make your own kaleidoscope, there are several options – one that is easy, one that requires a little more skill – listed below.

Last modified: 2025-01-23 12:01

Strong winds can increase the rate of heat loss in cold weather. Wind chill attempts to score this effect based on the effect of wind on human skin exposure. To calculate the coolness of the wind in your home, all you need is temperature and wind speed measurements.

Last modified: 2025-06-01 06:06

The phrase "steam engine" is often reminiscent of the steam engine of a Stanley Steamer locomotive or car, but these machines have many more uses than just transportation. The steam engine, which was first invented in its most basic form some two millennia ago, has become the main source of power in the last three centuries, with steam turbines currently producing 80% of the world's electrical energy or more.

Last modified: 2025-01-23 12:01

The center of gravity (CG) is the center of the weight distribution of an object when the center of gravity can be considered as a force. This is the point at which the object is in perfect balance, regardless of how the object is rotated or flipped at that point.

Last modified: 2025-01-23 12:01

Uranium is used as a power source in nuclear reactors and was used to make the first atomic bomb, which was dropped on Hiroshima in 1945. Uranium is mined as an ore called pitchblende, and is composed of several isotopes of atomic weight and several different levels of radioactivity.

Last modified: 2025-01-23 12:01

Most algebra problems about speed ask you to find the speed or average velocity. Although the terms are used interchangeably, the difference is that the speed usually takes the direction into account. This article will show you how to calculate average speed, which direction is not considered.

Last modified: 2025-01-23 12:01

Acceleration is a value that describes a change in speed, including a change in direction. You can find average acceleration to find the average velocity of an object over a period of time. Since this is not something people count on in everyday life, acceleration issues can be unusual.

Last modified: 2025-01-23 12:01

The density of an object is defined as the ratio of mass to volume. Density is used in geology, and many other physical sciences. Density also determines whether an object can float (also known as buoyancy) in water, which has a density unit of 1 gram per cubic centimeter (g/cm).

Last modified: 2025-01-23 12:01

Static electric shock is the result of redistribution of electric charge between dissimilar materials. While usually harmless, static electricity can be painful and irritating. Fortunately, there are several ways to reduce the chances of static electricity, such as changing clothes or adjusting to the environment.

Last modified: 2025-06-01 06:06

Alternating current (AC) is an efficient way to conduct electricity. However, most electrical appliances require direct current (DC) to function. Therefore, the AC to DC converter is already part of the equipment itself or part of the power cord.

Last modified: 2025-01-23 12:01

Magnets are commonly found in motors, dynamos, refrigerators, debit and credit cards, as well as electronic equipment such as electric guitar pickups, stereo speakers, and computer hard drives. Magnets can be permanent, naturally formed, or electromagnet.

Last modified: 2025-01-23 12:01

If you are a cigar fan, you will need a hygrometer to make sure the relative humidity of the vapor in your cigar storage is correct. A hygrometer is a device that can measure the humidity of the air, both in cigar storage areas, or in other places such as greenhouses, incubators, museums, etc.

Last modified: 2025-01-23 12:01

You may have heard the term “opposite attract”, which is when two opposite traits tend to be attracted to each other. Although sometimes used inappropriately in a romantic relationship, this cliché term is a rule of thumb for magnetic polarity.

Last modified: 2025-01-23 12:01

Theories explain why something happens or the relationship between things. Theory is the "how" and "why" of the observable "what". To develop a theory, you must follow the scientific method. First, make measurable predictions about why and how things work.

Last modified: 2025-01-23 12:01

To calculate the volume of a container in gallons, you usually need to calculate it by converting the volume from another unit of measurement. You can calculate gallons from other units of measurement, which are used to describe volume. Step Part 1 of 3:

Last modified: 2025-01-23 12:01

A pendulum consists of a weight suspended from a rod or rope that swings back and forth. Pendulums are common in timekeeping devices such as metronomes, pendulum clocks, seismometers, and swing incense burners, and can be used to illustrate complex physics problems.

Last modified: 2025-01-23 12:01

The strength of the electric current (amperage) is the amount of electric current that conducts through electrical components, such as cables. The strength of an electric current measures the number of electrons that pass through a certain point in a given period of time, with 1 ampere (or “amp”) equal to 1 coulomb per second.

Last modified: 2025-06-01 06:06

Force is a physical term defined as an influence that causes an object to change its speed or direction of motion or rotation. Forces can accelerate objects by pulling or pushing. The relationship between force, mass, and acceleration was defined by Isaac Newton in Newton's 2nd law, which states that the force of an object is the product of its mass and acceleration.

Last modified: 2025-06-01 06:06

You can crush a soda can with just a heat source and a bowl of water. This is a visual demonstration of some simple science principles, including the pressure of water and the concept of a vacuum. These experiments can be carried out by the teacher as a demonstration or by senior students under supervision.

Last modified: 2025-01-23 12:01

How to calculate power in horsepower or watts, what these terms mean, and why these terms are important. Step Step 1. Review the basics The word power is defined as the time interval for doing work. Meanwhile, work is an old term for measuring how effective an applied force is in moving an inert object or facing an obstacle or other obstacle and covering a distance.

Last modified: 2025-01-23 12:01

Molar absorptivity, otherwise known as the molar attenuation coefficient, is a measure of how well a chemical species absorbs light of a certain wavelength. This allows comparisons between compounds without the need to consider differences in solution concentration and the width of the solution container when making measurements.

Last modified: 2025-06-01 06:06

What is the difference between mass and weight? Weight is the effect of gravity on an object. Mass is the amount of matter in an object regardless of the effect of gravity on the object. If you moved the flagpole to the Moon, its weight would be reduced by about 5/6 of its weight, but its mass would remain the same.

Last modified: 2025-01-23 12:01

Resistance is a measurement of the difficulty level of electrons to flow through a particular object. Resistance is similar to the friction an object experiences when it moves or is moved over a surface. Resistance is measured in ohms; 1 ohm is equal to 1 volt of voltage divided by 1 ampere of current.