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Science experiments

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WHY NOT TRY A FUN SCIENCE EXPERIMENT RIGHT NOW?

Here's list of great science experiments with instructions that you can do right at home or at school. In order for your science experiment to be safe and successful, be sure to:

Get your parent's or teacher's permission, and their help

Follow the directions as written

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Great collection of Science Experiments for home and school.

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Find lots of easy Science Experiments perfect for trying out home or at school!

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Government energy research site

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H YCON offers comprehensive engineering services for your hydrogen project. We accompany you from project definition through to delivery and beyond.
It depends on the design
The reliability, efficiency and economic performance of a hydrogen energy system is predetermined by the successful design of the basic groundwork. Only through suitable technology and performance choices of individual component as well as exact power tuning to the up-to-the-minute variable power supply and demand situation can operational and economic objectives be achieved.

H YCON offers expertise for the design and configuration of specific to your needs tailored and optimized hydrogen energy systems.

Furthermore, H YCON offers full planning and constructing services for your hydrogen energy system. These include

Basic design, calculations and system specification (Basic Engineering)

Detailed design (Detailed Engineering)

Participation in planning approval and preparation of a safety concept

Project support and procurement

Construction supervision and commissioning

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H YCON offers comprehensive engineering services for your hydrogen project. We accompany you from project definition through to delivery and beyond. It depends on the design The reliability, efficiency and economic performance of a hydrogen energy system is predetermined by the successful design of the basic groundwork.

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Natgeo kids site

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Armchair explorers energy

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science travel exploration mathematics math maths physics

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Science and maths and travel and other fun stuff

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What is energy

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U.S. Energy Information Administration - EIA - Independent Statistics and Analysis

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What is thermal energy site

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Web search results for whats thermal energy from RMG Ltd.

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Elastic energy-wikepedia

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The essence of elasticity is reversibility. Forces applied to an elastic material transfer energy into the material which, upon yielding that energy to its surroundings, can recover its original shape. However, all materials have limits to the degree of distortion they can endure without breaking or irreversibly altering their internal structure.

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Potential energy

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An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position. When assuming its usual position (i.e., when not drawn), there is no energy stored in the bow. Yet when its position is altered from its usual equilibrium position, the bow is able to store energy by virtue of its position. This stored energy of position is referred to as potential energy. Potential energy is the stored energy of position possessed by an object.

Gravitational Potential Energy

The two examples above illustrate the two forms of potential energy to be discussed in this course - gravitational potential energy and elastic potential energy. Gravitational potential energy is the energy stored in an object as the result of its vertical position or height. The energy is stored as the result of the gravitational attraction of the Earth for the object. The gravitational potential energy of the massive ball of a demolition machine is dependent on two variables - the mass of the ball and the height to which it is raised. There is a direct relation between gravitational potential energy and the mass of an object. More massive objects have greater gravitational potential energy. There is also a direct relation between gravitational potential energy and the height of an object. The higher that an object is elevated, the greater the gravitational potential energy. These relationships are expressed by the following equation:

PEgrav = mass * g * height

PEgrav = m ** g * h

In the above equation, m represents the mass of the object, h represents the height of the object and g represents the gravitational field strength (9.8 N/kg on Earth) - sometimes referred to as the acceleration of gravity.

To determine the gravitational potential energy of an object, a zero height position must first be arbitrarily assigned. Typically, the ground is considered to be a position of zero height. But this is merely an arbitrarily assigned position that most people agree upon. Since many of our labs are done on tabletops, it is often customary to assign the tabletop to be the zero height position. Again this is merely arbitrary. If the tabletop is the zero position, then the potential energy of an object is based upon its height relative to the tabletop. For example, a pendulum bob swinging to and from above the tabletop has a potential energy that can be measured based on its height above the tabletop. By measuring the mass of the bob and the height of the bob above the tabletop, the potential energy of the bob can be determined.

Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.

Use this principle to determine the blanks in the following diagram. Knowing that the potential energy at the top of the tall platform is 50 J, what is the potential energy at the other positions shown on the stair steps and the incline?

Elastic Potential Energy

The second form of potential energy that we will discuss is elastic potential energy. Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing. Elastic potential energy can be stored in rubber bands, bungee chords, trampolines, springs, an arrow drawn into a bow, etc. The amount of elastic potential energy stored in such a device is related to the amount of stretch of the device - the more stretch, the more stored energy.

Springs are a special instance of a device that can store elastic potential energy due to either compression or stretching. A force is required to compress a spring; the more compression there is, the more force that is required to compress it further. For certain springs, the amount of force is directly proportional to the amount of stretch or compression (x); the constant of proportionality is known as the spring constant (k).

Fspring = k * x

Such springs are said to follow Hooke's Law. If a spring is not stretched or compressed, then there is no elastic potential energy stored in it. The spring is said to be at its equilibrium position. The equilibrium position is the position that the spring naturally assumes when there is no force applied to it. In terms of potential energy, the equilibrium position could be called the zero-potential energy position. There is a special equation for springs that relates the amount of elastic potential energy to the amount of stretch (or compression) and the spring constant. The equation is

PEspring = 0.5 * k * x²

where k = spring constant

x = amount of compression
(relative to equilibrium position)

To summarize, potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height. An object possesses elastic potential energy if it is at a position on an elastic medium other than the equilibrium position.

Check Your Understanding

Check your understanding of the concept of potential energy by answering the following questions. When finished, click the button to view the answers.

1. A cart is loaded with a brick and pulled at constant speed along an inclined plane to the height of a seat-top. If the mass of the loaded cart is 3.0 kg and the height of the seat top is 0.45 meters, then what is the potential energy of the loaded cart at the height of the seat-top?

2. If a force of 14.7 N is used to drag the loaded cart (from previous question) along the incline for a distance of 0.90 meters, then how much work is done on the loaded cart?

Note that the work done to lift the loaded cart up the inclined plane at constant speed is equal to the potential energy change of the cart. This is not coincidental! The reason for the relation between the potential energy change of the cart and the work done upon it is the subject of Lesson 2.

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An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position.

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Gravitational energy wikepedia

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Gravitational energy - Simple English Wikipedia, the free encyclopedia

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Gravitational energy is the potential energy held by an object because of its high position compared to a lower position. In other words, it is energy associated with gravity or gravitational force. For example, a pen being held above a table has a higher gravitational potential than a pen sitting on the table.

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EIA energy information site

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Today in Energy

The Enbridge Line 3 replacement pipeline, which delivers crude oil from Edmonton, Alberta, in Canada to Superior, Wisconsin, became fully operational on October 1, 2021, increasing the pipeline's capacity to 760,000 barrels per day (b/d). Before the replacement, Enbridge Line 3 had a capacity of about half that amount. Because the Line 3 replacement project increases the capacity to import crude oil by pipeline from Canada, this pipeline could reduce the need to ship crude oil from Canada by other modes, especially rail. More ›

Source: Map by the U.S. Energy Information Administration, using publicly available data

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Homepage - U.S. Energy Information Administration (EIA)

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Today in Energy The Enbridge Line 3 replacement pipeline, which delivers crude oil from Edmonton, Alberta, in Canada to Superior, Wisconsin, became fully operational on October 1, 2021, increasing the pipeline's capacity to 760,000 barrels per day (b/d). Before the replacement, Enbridge Line 3 had a capacity of about half that amount.

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Chemical energy

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Chemical energy

Chemical Energy is released when bonds form in a chemical reaction, often producing heat as a by-product ( exothermic reaction).

There are two important terms to know in the study of chemical energy.

1. Exoergic: An exothermic (exoergic) nuclear reaction is a reaction that releases energy when chemical bonds form.

2. Endoergic: an endothermic (or endoergic) reaction is one that requires an input of energy to take place. Note that energy is often needed to break up bonds before forming new bonds. Example: during photosynthesis, energy from the sun is needed/used to break the CO2 and H2O bonds. Glucose is produced and an O2 bond is formed as a result.

Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy. Usually, once chemical energy is released from a substance, that substance is transformed into an entirely new substance.

For example, when an explosive goes off, the chemical energy stored in it is transferred to the surroundings as thermal energy, sound energy, and kinetic energy.Dry wood is a store of chemical energy. When a fire is applied to wood, the molecules in the wood fragments react with the oxygen (air). This reaction results in new chemical bonds of carbon dioxide, carbon monoxide, and water.

Let's see one good example in the fire-place illustration below.

As it burns in the fireplace, chemical energy is released and converted to thermal energy (heat) and light energy. Notice that the wood now turns into ashes (a new substance)

Food is also a good example of stored chemical energy. This energy is released during digestion. Molecules in our food are broken down into smaller pieces. As the bonds between these atoms loosen or break, a chemical reaction will occur, and new compounds are created. When the bonds break or loosen, oxidation occurs almost instantly.

In the example above, notice that new compounds are formed from the breakdown of other molecules or atoms. A chemical reaction causes that.

A chemical reaction is involved in this breakdown. The energy produced keeps us warm, maintain and repair bodies, and makes us able to move about. Different foods store different amounts of energy. The energy in food is measured in kilocalories (or Calories). Can you think of some very good examples of chemical energy?

Click to see an example of how chemical energy is released from coal to produce electricity.

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Chemical energy Chemical Energy is released when bonds form in a chemical reaction, often producing heat as a by-product ( exothermic reaction). There are two important terms to know in the study of chemical energy. 1. Exoergic: An exothermic (exoergic) nuclear reaction is a reaction that releases energy when chemical bonds form.

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Nuclear energy issues

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Current Issues in Nuclear Energy: Nuclear Power and the Environment -- ANS / Store / Special Publications

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This report addresses the role of nuclear power in the global energy sector in a broader context. Sustainable social and economic development are discussed as well as the environmental impacts arising from the uses of different sources of energy.

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Kinetic energy article khan academy

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In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

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EIA energy kids

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Energy Kids: U.S. Energy Information Administration

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Energy 4 me learn about energy

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Brittanyca school official site

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Welcome to Britannica School , a safe, up-to-date and age-appropriate information resource for Elementary, Middle and High School.

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Physical science official site

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Welcome to PowerKnowledge Physical Science

PowerKnowledge Physical Science is an online resource specifically designed for learners in grades 3 to 6. Comprised of curriculum correlated content, PK Physical Science promotes digital literacy and 21st century learning skills, while offering research, report, and homework help.Instant Article Translation into over 100 languages supports English Language Learners and family literacy programs.

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PowerKnowledge Physical Science is an online resource specifically designed for learners in grades 3 to 6.

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Bill Nye the science guy

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geothermal energy

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U.S. Energy Information Administration - EIA - Independent Statistics and Analysis

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