Energy Vocab
What is energy?
The ability to do work.
All energy can be divided into two main forms, ________ energy and ___________ energy
Kinetic & Potential
What is the type of energy that has to do with temperature (hot or cold)?
Thermal Energy
Explain the energy transfer in a slinky
elastic energy as it stretches and elastic as comes back to it's normal state.
At what point on a roller coaster does the roller coaster have the most potential energy?
At the highest point
What is work?
The transfer of energy from one object to another.
Energy that is stored in an object is __________.
Potential Energy
Energy caused by the movement of electrons is _______.
Electrial Energy
Explain the transfer of energy in a line of dominos
Each time a domino falls the same type of energy is transferred to the next domino
According to the law of conservation of energy, in theory, a roller coaster should never stop moving. However, we know that it eventually stops. Where does the energy go?
some is converted into thermal energy due to friction
What is Energy Transformation?
When energy changes from one form of energy to another.
The energy that an object has due to its motion is __________.
Kinetic Energy
Energy available for release from chemical reactions is______.
Chemical Energy
A coal grill converts _____ energy to _____ energy.
Chemical to thermal
True or False: An object can have potential & kinetic energy at the same time?
True
What is Energy transfer?
the movement of energy from one place or object to another
What two variables influence an object's kinetic energy?
Mass and speed. More mass = more kinetic energy. More speed = more kinetic energy
Name an object with mechanical energy
skateboard etc.
Explain the transformation that takes place when you rub your hands together
Mechanical to thermal
A ball is sitting at the top of a hill that is 10 meters high. The ball has a mass of 2 kilograms.Solve for Mechanical energy.
ME=KE+PE
200
State the Law of Conservation of Energy
Energy can neither be created nor destroyed. Instead, all forms of energy can be converted or transformed into other forms.
What is the formula to solve for kinetic energy?
KE=(mass)(velocity)^2/2 or KE= 1/2mv^2
Name all 8 types of energy
Mechanical, electrical, chemical, thermal, sound electromagnetic, elastic and nuclear
Explain the transformation that takes place when you turn on a flashlight.
Chemical energy → Electrical energy → Light energy/electromagnetic & thermal
A book is placed on a shelf that is 4 meters high. The book has a mass of 3 kilograms.Solve for Potential Energy.
Potential Energy = mass × gravity × height
(Use gravity = 9.8 m/s²)
120 J