Energy
Name 3 types of energy.
Potential, kinetic, GPE, thermal, electromagnetic, mechanical, and nuclear are some accepted answers.
What is heat?
Heat is thermal energy in transit.
What allows electric motors to work.
Magnetism allows electric motors to work because of how it reacts with the solenoids and electromagnets.
What is static?
Static is the buildup of electric charges.
What is mechanical energy.
The sum of the amount of kinetic and potential energy.
What is the heat source and sink?
The source is where you find the higher temperature, and the heat sink is where you find the lower temperature.
Can the poles in a magnet stand alone? Explain.
No, they can't because if you split them, they just become 2 smaller opposite poles. It is impossible as we know, to have a mono pole.
What is electric current?
It is the continuous flow of electric charges that will continue to flow as long as the circuit is closed.
What is lightning?
A buildup of electrons that are discharged. (static)
Explain what radiation is.
Radiation is energy carried by electromagnetic waves.
Explain how a motor works ?
It uses alternating currents through opposing pairs of magnets to create a rotating magnetic field, which creates a magnetic field.
What is the difference between a series and parallel circuit?
A series circuit has one path for the energy, while a parallel has multiple.
Explain the relationship between heat and efficiency.
When energy is used and transformed, energy is lost to heat. Efficiency is the ratio of useful energy to the total energy absorbed. There would be 100% efficiency without the loss of energy to heat.
How is heat different from temperature?
Temperature is the average kinetic energy of the particles, while heat is thermal energy in transit.
What is the magnetosphere?
It is the magnetic field around the Earth, and it is shaped and affected by solar wind.
What is the difference between magnetism and electricity?
Magnetism has poles, while electricity has charged. Poles can't be alone, while electrons can be alone. Magnetism needs electrons to be aligned, while there is no alignment needed for electricity.
Explain the First Law of Thermodynamics or the Theory of Conservation of Energy.
These both say that energy can never be created or destroyed, but that it is transformed into one form or another.
Explain specific heat capacity.
Specific heat capacity is the amount of energy required to raise the temperature of one gram of a substance by 1 degree Celsius. For example, to raise water's temperature by one degree you need 4.186 J which is very high compared to other substances.
Explain Magnetic Declaration, and how it works.
It is the difference between magnetic and geographic North. This is because, over time, the Earth's field varies, changing the location of the poles.
Explain the difference between induction and conduction.
Induction is the movement of charges caused by the electric field with direct contact. Conduction is the movement of charges by the result of direct contact.