Vocabulary
The measurement of the energy used to perform a task.
What is work?
A scientific unit for distance.
What is meter?
One example of kinetic energy that is found in moving particles.
What is heat?
True or False: Lifting a heavy object is work.
If you lift a box that weight 8 N onto a shelf that is 1 meter high, this is the amount of work performed. It is the same amount of work as lifting a 1 N box 8 meters high.
What is 8 joules (or 8 Newton meters)?
The ability to perform work or to change an object.
What is energy?
A scientific unit for force.
These are two examples of kinetic energy that moves in waves.
What are light and sound?
True or False: Holding a heavy object still above your head is work.
What is FALSE?
The type of forces that cause acceleration and motion.
What are unbalanced forces?
Energy that is stored in the position or structure of an object.
What is potential energy?
The scientific unit for work, which combines distance and force units.
What is Newton meters?
One example of kinetic energy that we commonly use for power in our homes and appliances.
What is electrical energy?
Throwing a ball is adding this kind of energy to it.
What is kinetic energy?
This is the term for work that is done when a force is applied in the same direction as the motion of an object.
What is positive work?
Energy of a moving object.
What is kinetic energy?
The unit that is used to measure work and energy (a.k.a. Newton-meter)
What is joule?
An example of potential energy that is stored in the links between atoms and molecules.
What is chemical energy?
Holding a ball still above the ground is an example of this kind of energy.
What is potential energy?
This example of unhelpful work occurs when a turbine causes some kinetic energy to change to heat instead of electricity when the machine parts rub together.
What is friction?
The theory that sates that energy cannot be created or destroyed, it can only change forms.
What is the law of conservation of energy?
The formula that is used to calculate the amount of work that is done in a situation.
What is force x distance?
An example of potential energy that is stored in the links between protons and neutrons inside an atom.
What is nuclear energy?
In baking a loaf of bread, heat changes to chemical energy and then the chemical energy changes to kinetic energy in your muscles after you eat the bread. What scientific theory does this example demonstrate?
What is conservation of energy?
The term for motion that changes back and forth from potential energy to kinetic energy, like the vibration of a spring.
What is periodic motion?