Forces
What is a force?
A force is a push or a pull.
What is an internal force?
An internal force is a force that acts from within the structure.
This force acts like "brakes" between two surfaces, making it harder for objects to slide past each other.
friction
These energy resources, like wind and solar, can be replaced naturally in a short amount of time.
What are renewable resources?
If a new wind farm creates 500 new jobs and brings money to a town, it is having a positive ____ impact.
What is an economic impact?
What are the 4 internal forces?
tension, torsion, shear, and compression
What is compression?
is a force that squeezes or presses something together.
When you let go of a stretched spring, this force pulls it back to its original shape.
elastic/ spring force
These resources, like coal and oil, take millions of years to form and cannot be easily replaced.
What are non-renewable resources
If smoke from a coal plant makes the air dirty and hurts local plants, it is having a negative ____ impact.
environmental
What are 3 examples of external forces?
applied force
friction
elastic/spring force
What is tension?
is a stretching force that expands or lengthens.
Walking on ice is difficult because there is very little of this external force.
friction
Wind turbines capture this kind of energy to turn it into electricity for our homes.
renewable energy
When a new dam is built and a whole community has to move their homes, it is having a major ____ impact.
societal
What is the difference between an internal and external force?
Internal forces are forces that occur within a structure. External forces are caused by external agents in a structure.
What is shear?
is a force that pushes in opposite directions.
This is the force you apply directly to an object, like kicking a soccer ball or pushing a door open.
applied force
Name 3 non renewable energies
coal, oil, nuclear, , fossil fuels, natural gas
This type of impact looks at the "dollars and cents"—how much it costs to build a power plant and how much money it makes.
What is an economic impact?
When you push a heavy box across the floor, you are exerting this specific type of external force.
applied force
What is torsion?
is a force in a twisting motion.
A trampoline uses this force to launch you into the air after your feet push down on it.
elastic/ spring force
This is the name for the series of operations used to turn raw oil into gasoline for cars.
processing
This type of impact focuses on how energy choices affect the land, air, water, and wildlife.
economic impact