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Energy and Resources

Unit IV Sixth Grade

Daniella Spooner Lagos

on 11 November 2016

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Transcript of Energy and Resources

Forms of Energy
1. Mechanical Energy
a. Potential Energy
b. Kinetic Energy
Properties of Energy
The Law of Conservation of Energy:

Energy and Living things
Photosynthetic organisms can transform light energy into chemical energy that can be stored or transferred to other organisms in the food chain.

What is Energy?

What is it capable of?
Has the capacity to produce changes in the properties of matter: shape, size, position, movement, state (gas, liquid, solid, plasma)
It is a component of ALL matter!
Energy can be measured!
Have you heard of calories? They're a unit of energy measurement.

So is: kWh (kilowatt-hour) and J (Joule, the international unit)
Potential Energy
Related to the position of a body.

1. Elastic: Energy accumulated due to deformation.

2. Gravitational: Associated to the position of a body in space or in the Earth's atmosphere
Kinetic Energy


Associated to a body in MOTION.
Which do you think has more kinetic energy?
Chemical Energy
Stored in matter and is released during changes in composition
Thermal Energy
Produced by the movement of particles (result of kinetic energy).

Temperature is a value that comes from the measurement of this energy.
Is energy transferred between two bodies or areas with different temperatures.
Electric Energy
Produced by the movement of electrons through a conductor.
Radiant Energy
It includes different forms of radiation: UV, IR, light and radio waves.
Sound energy
The energy that transports sound waves. This type of energy needs matter to be transported.
Nuclear Energy
Contained in atoms of Uranium and Plutonium. They can produce a lot of energy.
Energy can neither be created nor destroyed, it only changes its form and can flow from one place to another.
1. Energy can Transform
From electric to sound

From electric to heat

From electric to movement
2. Energy is Conserved
The total amount of energy always stays the same. Energy remains constant in the Universe.
3. Energy can be stored!
Batteries are a great example of energy that can be stored.

The human body stores energy as chemical energy!
4. Energy can Transfer and Degrade
It transfers when it moves from one body to another
Which would be the main source of Energy that maintains life?
How do WE get our energy?
We get our energy from FOOD!
It maintains our basal metabolic rate (keep us active while we're at rest.
It allows us to do physical activity
It allows us to produce heat
Energy is necessary for LIFE!
Are all the forms of energy that are present in Nature.
It includes: burning fossil fuels, coal, natural gas or wood.
Primary Energy Resources
Can be used DIRECTLY to obtain energy, without the need of a transformation (Ex. oil, water, wood)
Secondary Energy Resources
Are all the products that result from the transformation of primary sources: windmills, solar panels
Fossil fuels like coal, petroleum and natural gas; uranium, plutonium and other radioactive substances.

They cause air pollution and increase the greenhouse effect

Greenhouse gases increase the temperature on Earth
They are clean, respectful to the environment, inexhaustible and produce low emissions of carbon dioxide.
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