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Energy is closely linked to mass. A lump of coal and an energetic dog both have energy, but different forms of energy.

What is energy?
DEFINITION:

Energy is the ability to do work.

Work is Energy transferred.

UNIT:

Joule (J)

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“MRS CHEN” (Acronym we use to remember):

1. mechanical (kinetic + potential)

2. radiant (light)

3. sound

4. chemical

5. heat

6. electrical

7. nuclear

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Law of conservation of energy:

Energy cannot be created nor destroyed, but only transferred from one form to another.

Gravitational potential energy:

The energy an object possesses due to its position relative to a reference point.

Kinetic energy:

The energy an object has as a result of the object's motion.

Mechanical energy:

The sum of gravitational potential and kinetic energy at a point.

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Can you tell a story of energy transformation? Start with Mr Happy Sun:

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Can you tell a story of energy transformation? Start with Mr Happy Sun:

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1.

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2.

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3.

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Types of Energy & the Law of Conservation of Energy

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Bill Nye shows us how energy works and how it effects us! He also explains the different kinds of energy and what they do.

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When the marble run is just not enough anymore..

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When the marble run is just not enough anymore..

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What do we consume electrical energy for?

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What do we consume electrical energy for?

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The energy that power our world comes from different sources, mainly classified as:

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The energy that power our world comes from different sources, mainly classified as:

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Renewable energy is any natural energy resource that can replace itself quickly and dependably.

Non-renewable energy is a source of energy that will eventually run out and that has limited supply, e.g. fossil fuels and nuclear energy.

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We need a cleaner alternative

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What is the largest contributor to renewable energy?

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What is the largest contributor to renewable energy?

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Solar energy?

Wind energy?

Geothermal energy?

Hydroelectric energy?

Biomass energy?

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Hydropower is the most widely-used renewable power source.

Global hydroelectric installed capacity exceeding 1 000 GW

Accounts for almost 20% of the world's total installed power generation capacity

Accounts for 50% of the global renewable power generation capacity. Jul 28, 2020, https://www.power-technology.com/

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Energy in moving air, harnessed by wind turbines.

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Energy that comes from the sun
Converted into heat, light and electricity

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Energy contained in organic matter

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Energy in the force of moving water

Captured by dams in hydropower plants and converted to electricity

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Find high-quality images, photos, and animated GIFS with Bing Images

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Energy that comes from heat generated by the Earth
Used to produce electricity and can provide heat and hot water

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Energy released when atoms’ nuclei are split apart (fission).

Nuclear power plants produce electricity through nuclear fission

The plant's core, the fuel rods and the water, is encased in a steel reactor vessel.

That reactor vessel is in turn encased in a giant reinforced concrete shell, which is designed to prevent any radioactive gases from escaping.

In a fission reaction, a light particle (a free neutron) collides with a heavy particle (uranium or plutonium) which splits into two or three pieces.

This produces insane amounts of energy in the form of both kinetic energy and electromagnetic radiation.

Those new pieces include two new nuclei (byproducts), some photons (gamma rays), and some more free neutrons, which makes nuclear fission a good candidate to generate energy.

The newly produced free neutrons zoom around and smack into more uranium or plutonium isotopes.

More energy and more free neutrons are produced.

Chain reaction!

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https://phet.colorado.edu/en/simulation/legacy/energy-forms-and-changes

Energy Sources and Transfers (Simulation)

http://phet.colorado.edu/en/simulation/energy-forms-and-changes

·       In this simulation, you will be able to “see” several different forms of energy and the transfers that can occur between them.

·       You are also able to work with a system where you can manipulate the energy input, observe the process of electrical energy generation and manipulate the output.

·       Click on the “Energy Systems” tab. FIll in the worksheet in the next post.

·       Be sure to click the “Energy Symbols” box so the different types of energy will be visible throughout the process.

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WORKSHEET - ENERGY SOURCES AND TRANSFERS

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WORKSHEET - ENERGY SOURCES AND TRANSFERS

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Energy Forms & Changes Simulation Worksheet