All energy can be divided into two main forms, ________ energy and ___________ energy
kinetic and potential
100
Heat energy
Thermal energy
100
Explain the transformation that takes place when you rub your hands together
Kinetic (movement of the hands) to thermal (heat produced from friction)
100
At what point on a roller coaster does the roller coaster have the most potential energy?
At the highest point
200
What is the equation for work
force x distance
200
The energy that an object has because of its position or condition
Potential energy
200
Energy caused by the movement of electrons
Electrical energy
200
Explain the transformation that takes place when you turn on a flashlight.
What is Chemical (of the battery) to electrical (flow of electrons) to light energy (from the light) and thermal energy (the heat produced by the light)
200
If you push on a door that says pull is work being done of the door? Why or why not?
No because work is the use of force to move an object. You exerted a force but did not move the object.
300
What is the ability to do work?
energy
300
The energy an object has because of its motion
kinetic energy
300
Energy available for release from chemical reactions
Chemical energy
300
A coal grill converts _____ energy to _____ energy
Chemical to thermal
300
Give three example of everyday devices that use electromagnetic energy
microwave
radio tower
x-ray machine
400
A pathway that allows for electrons to flow easily
circuit
400
What two variables influence an objects kinetic energy and how?
Mass and speed
More mass = more kinetic energy
More speed = more kinetic energy
400
A form of energy that is created by vibrating partibles that create waves that can travel through space
This type of energy includes visible light, as well as radio waves, microwaves, and X rays
Electromagnetic energy
400
Through the process of photosynthesis, ________________ energy from the sun is changed to stored ________________ energy.
solar (energy from the sun) to chemical (food plants make through photosynthesis)
400
A resource that is replaced naturally and can be used again
A renewable resource
500
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.
500
What is mechanical energy and what is the equation for calculating total mechanical energy?
Mechanical energy is the energy that an object has because of its motion or position/condition. (combined potential and kinetic energy)
Mechanical energy = KE + PE
500
Heat from the earth is ______ energy
Energy form the sun is ____ energy
Energy created from moving water is _____ energy
Energy created from the movement of air is _____ energy
True or false: these are are renewable energy sources.
geothermal
solar
hydropower
wind
True.
500
In a car, the ________________ energy in gasoline is burned to create heat energy, which is converted to ________________ energy to make the car go.
chemical, kinetic
would also take potential, kinetic
500
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