Descriptions
Describe four ways that energy resources are used by individual and communities in everyday life.
Energy resources can be used in daily life such as heating, cooling, lighting and cooking.
Temporary changes (3).
Stretching an elastic band, pressing down a keyboard button, and compressing a spring.
Explain how internal and external forces are related.
Internal forces are created by external forces. For example stretching an elastic band is applying an external force and by doing so you create an internal force inside the elastic band.
Permanent Changes (3).
Some permanent changes are bending metal or breaking a pencil or shaping clay.
For every action there is an equal and opposite reaction. Action forces and reaction forces are related because when you apply an action force the reaction force happens in the opposite direction.
List the factors that influence the selection of energy resources
Availability and accessability, societal impacts, economic impacts and environmental impacts.
Describe an example of an action force and its reaction.
List reasons why fossil fuels are used as an energy resource in Alberta.
It is an affordable and reliable resource. We have the infrastructure already for fossil fuels.
Describe the external and internal forces involved in ripping a piece of paper in half.
The internal force is shear, meaning a force that pushes parts in opposite directions resluting in it breaking. The external force is applied force meaning a force exerted on the object by you.
List energy resources that can be used before processing and the ones that can be used after processing.
The resources that can be used before processing are wood, wind and water. The resources that can be used after processing are nuclear, biofuel, hydro, solar and fossil fuels.