Which statement about materials used as insulators and conductors is correct?
Responses
Conductors prevent electricity from transferring between materials.
Conductors prevent electricity from transferring between materials.
Conductors allow for more electric current than insulators.
Conductors allow for more electric current than insulators.
Insulators can have a higher voltage than conductors.
Insulators can have a higher voltage than conductors.
Insulators are made to let electrons flow more easily.
Insulators are not made to let electrons flow more easily. This statement is incorrect.
Which statement about materials used as insulators and conductors is correct?
Choices
a) Conductors prevent electricity from transferring between materials
b) Conductors allow for more electric current than insulators.
c) Insulators can have a higher voltage than conductors.
d) Insulators are made to let electrons flow more easily.
b) Conductors allow for more electric current than insulators.
How does a light bulb function as a resistor?
Responses
It functions as a closed loop in which energy passes from one end to the other, producing light along the way.
It blocks or decreases the electric current, changing the energy into the light it produces.
It passes the electric current through it, changing the energy into light.
It amplifies or increases the electric current, changing the energy into the light it emits.
It blocks or decreases the electric current, changing the energy into the light it produces.
Which material listed would be the best choice as a conductor?
Responses
rubber
rubber
gold
gold
salt water
salt water
Styrofoam
gold
A contractor selects heavier trusses for a house, increasing the load that the walls must support. Which change will the contractor need to make to the design?
Responses
increase the thickness of the wall material
increase the thickness of the wall material
increase the amount of insulation in the wall
increase the amount of insulation in the wall
increase the electrical wiring in the wall
increase the electrical wiring in the wall
increase the overall weight to the roof
increase the thickness of the wall material
Which term means “a charged atom that has either gained or lost a negative charge”?
Responses
electron
electron
ion
ion
neutron
neutron
proton
proton
ion
Which method of transportation is most accessible in rural areas?
Responses
air
air
road
road
maritime
maritime
rail
road
Which vehicle subsystem has the function of carrying the weight of the vehicle and the passengers, as well as withstanding forces imposed by braking and accelerating?
Responses
transmission
transmission
propulsion
propulsion
guidance
guidance
structural
structural
Which subsystem of a car is responsible for making the ride less bumpy on a rough road?
Responses
transmission
transmission
guidance
guidance
control
control
suspension