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WorksheetsEWIT lesson 1-4 review
Total questions: 25
Worksheet time: 14mins
what is electrical energy
The energy associated with movement of electric charge (electrons)
The energy stored as liquid in batteries
The sum of all the internal Kinetic energy in a system
The energy associated with direct sun light that travels through open space
What are potential factors that increase the flow of electricity?
Add a 15 ohm resistor
Decrease the diameter of the wire
The increase of batteries in a series.
The increase of batteries in parallel
What is an electromagnet
An insulator that becomes magnetic when an electric current passes through a wire coiled around it.
A conductor that becomes magnetic when an electric current passes through a wire coiled around it.
A conductive material that has electrons scattered in all different directions
An insulated material that has electrons scattered in all different directions
What are potential factors that increase the strength of electromagnet?
Decrease # of coils
Increase # of coils
increase the # of batteries
Decrease number of batteries
3 types of thermal energy transfer
radiation, Conduction
Contraption
radiation, Insulation contraption
radiation, Insulation convection.
radiation, conduction, convection.
why are some light bulbs more energy efficient than others?
They are able to transfer electrical energy into just light energy
They are able to transform electrical energy into just light energy
They are able to transform electrical energy mostly into thermal energy
They are able to transfer electrical energy mostly into thermal energy
what is the relationship between kinetic energy and thermal energy.
kinetic energy: the sum of all the kinetic energy in a system
thermal energy: energy of motion
kinetic energy: energy of motion thermal energy: the sum of all the kinetic energy in a system
As kinetic energy increases, thermal energy decreases
As kinetic energy increases, thermal energy increases
what is electromagnet:
Magnets that are created through the process of protons passing through a current over a conductive material
An insulated metal core made into a magnet by the passage of electric current through a coil surrounding ith
a conductive metal core made into a magnet by the passage of electric current through a coil surrounding it
Magnets that are created through the process of protons passing through a current over an insulator
what an object that limits radiation
glass
foil
Styrofoam
plastic
what's an object that limits conduction
styrofoam
foil
aluminum
glass
whats an object that limits convection
screens
styrofoam
material with lots of opening
any material that's air tight
what's conduction?
energy that comes from a source(like the sun) and travels through open space at the speed of light
the transfer of heat from one place to another due to the movement of fluid
the transmission of energy through a substance(solid) when there is a difference of temperature
what is thermal energy?
the sum total potential energy of its molecules in a system
the sum total internal energy of an object due to the random movement (kinetic energy) of its molecules
The energy associated with the flow of electron
what's convection?
energy that comes from a source(like the sun) and travels through open space at the speed of light
the transfer of heat from one place to another due to the movement of fluid
the transmission of energy through a substance(solid) when there is a difference of temperature
what's radiation?
energy that comes from a source(like the sun) and travels through open space at the speed of light
the transfer of heat from one place to another due to the movement of fluid
the transmission of energy through a substance(solid) when there is a difference of temperature
What is an independent variable
The variable that is changed/manipulated in an experiment
The variables that stays the same throughout the whole investigation
the variable that is measured and recorded
What is a dependent variable
The variable that is changed/manipulated in an experiment
The variables that stays the same throughout the whole investigation
the variable that is measured and recorded
What is a control variable
The variable that is changed/manipulated in an experiment
The variables that stays the same throughout the whole investigation
the variable that is measured and recorded
IQ: How does the kinetic energy of a system affect the thermal energy of that system
What is the independent variable in the question?
Affect
System
Thermal Energy
Kinetic energy
IQ: How does the kinetic energy of a system affect the thermal energy of that system
What is the dependent variable in the question?
Affect
System
Thermal Energy
Kinetic energy
IQ: How does the kinetic energy of a system affect the thermal energy of that system
Which is the correct data table?
What is the correct equation for ohms law?
Voltage=Current x Resistance
Voltage =Current / Resistance
Voltage= Restistance / Current
What type of relationship does voltage and resistance have? (assuming current stays constant)
inversely proportional
directly proportional
no relationship
exponential
What type of relationship does voltage and current have? (assuming resistance stays constant)
inversely proportional
directly proportional
no relationship
exponential
What type of relationship does current and resistance have? (assuming voltage stays constant)
inversely proportional
directly proportional
no relationship
exponential
