SUSTAINABILITY - ENERGY: RENEWABLE AND NON-RENEWABLE ENERGY.

1. SUSTAINABILITY
02
ENERGY
RENEWABLE AND NON-RENEWABLE

2. ENERGY EXPLAINED VIDEO
https://www.youtube.com/watch?v=Yh34BYMVTxs

3. Energy = the amount of force or
power when applied can move one
object from one position to
another.
Energy exists in everybody
- Human beings
- Animals
- Non living things (machines)
WHAT IS ENERGY?

4. FORMS OF ENERGY VIDEO
https://www.youtube.com/watch?v=FX7T-QYTPho

5. • Kinetic (energy that an object possesses due to its motion)
• Potential (energy possessed by a body by virtue of its position
relative to others)
• Light (formed through chemical, radiation, mechanical means)
• Sound (produced when an object vibrates)
• Gravitational (energy an object possesses because of its
position in a gravitational field)
• Elastic (potential mechanical energy stored in the configuration
of a material, distort of volume or shape)
• Electromagnetic (term used to describe all the different kinds
of energies released into space by stars such as the Sun)
• Nuclear (energy released during nuclear fission or fusion,
especially when used to generate electricity).
FORMS OF ENERGY

6. HOW DO ENERGY CONVERT VIDEO
https://www.youtube.com/watch?v=ftj23FRS2LI

7. Any form of energy can be converted
into another form and the total energy
will remain the same.
When you charge your mobile phone,
the electrical energy is converted into
the chemical energy which gets stored
inside the battery’s molecules.
ENERGY CONVERSION

8. FOSSIL FUELS, THE GREENEST ENERGY VIDEO
https://www.youtube.com/watch?v=BJWq1FeGpCw

9. Over the last 200 years a large proportion of
our energy has come from non-renewable
sources such as oil and coal.
Demand for energy rises, and the resources
are running out.
Scientists are exploring the potential of
renewable sources of energy for the future.
All life on earth is sustained by energy from
the sun.
FOSSIL FUELS

10. Examples of non-renewable resources include:
• Coal
• Oil
• Natural Gas
• Nuclear
NON-RENEWABLE ENERGY

11. Renewable or infinite energy resources are
sources of power that quickly replenish
themselves and can be used again and again.
Examples of renewable resources include:
• Solar
• Wind
• Hydro
• Geothermal
• Tidal
• Wave
RENEWABLE ENERGY

12. RENEWABLE ENERGY VIDEO
https://www.youtube.com/watch?v=1kUE0BZtTRc

13. Some resources can be thought of as both
renewable and non-renewable.
• Wood (can be used for fuel and is renewable if
trees are replanted).
• Biomass (material from living things, can be
renewable if plants are replanted).
RENEWABLE AND NON-RENEWABLE ENERGY

14. BIOMASS AND WOOD ENERGY VIDEO
https://www.youtube.com/watch?v=nVl17JLn_u0

15. The NZ government wants to reduce its carbon dioxide
emissions.
It also wants to increase the amount of energy which
comes from renewable sources.
By 2025 targets state that 90% of energy must come
from renewable sources.
There are 2 ways the energy use can change in New
Zealand:
• Reducing the demand for energy
• Increasing the supply of renewable energy
PEOPLES’ USE OF ENERGY IN NEW ZEALAND

16. The demand for energy in the NZ varies. This is because of:
• Economic factors: During the recession energy demand
did not increase as predicted
• Seasonal factors: Demand for domestic energy over
winter is greater than over the summer.
• Temporal factors: At night there is surplus energy on
the national grid because demand is lower
REDUCING DEMAND FOR ENERGY
IN NEW ZEALAND