WorksheetsPhysics Final Review 4 - Static Electricity
Total questions: 24
Worksheet time: 12mins
You can charge a neutral object by rubbing it with a different material. This process is called _________.
friction
conduction
induction
polarization
Sometimes, you can charge an object just by touching it with another object and then separating the two objects. This process is called _________.
conduction
induction
radiation
insulation
During combing hair, which explanation best describes how friction causes static electricity?
The comb loses electrons to the hair, causing the comb to become positively charged.
The comb gains electrons from the hair, causing the comb to become negatively charged.
The hair and comb do not exchange any electrons during combing.
The comb and hair become neutral after combing because no charge is transferred.
Why do the comb and hair attract each other after combing?
They are oppositely charged.
They are both magnetic.
They are both made of plastic.
The comb heats up the hair.
The charge that develops on each object can be determined by:
Measuring the potential difference between the objects
Counting the number of electrons transferred
Observing the color change of the objects
Measuring the temperature of the objects
According to the electrostatic series, which material has the strongest tendency to become negatively charged?
amber
glass
Human skin
silk
According to the electrostatic series, which of the following materials has the strongest tendency to lose electrons and become positively charged when rubbed with polyester?
human skin
glass
aluminum
wood
According to the electrostatic series, which of the following materials is most likely to become negatively charged when rubbed with Wool?
Rabbit fur
Glass
Vinyl
Human skin
True or False: The material closer to the top of the electrostatic series will gain electrons and become negatively charged.
True
False
If we look to the Electrostatic Series, we see that the silk has a ____ hold for electrons than rabbit fur.
stronger
weaker
similar
no
When the fur and ebonite are rubbed together, some electrons from the __________ move to the __________ because ebonite has the __________ attraction for electrons.
fur, ebonite, stronger
ebonite, fur, weaker
fur, ebonite, weaker
ebonite, fur, stronger
What happens when a negatively charged rod touches a neutral pith ball?
The pith ball becomes negatively charged.
The pith ball becomes positively charged.
The pith ball remains neutral.
The pith ball repels the rod.
Fill in the blank: When two charged objects touch, electrons will move away from the object with more electrons until both objects have the same _______.
charge
mass
temperature
volume
In the process of charging by contact (conduction), protons move from one object to another.
True
False
A negatively charged rod touches a neutral pith ball. The __________ on the negatively charged rod repel each other and jump from the ________ to the _____________. The negative rod has shared its electrons with the pith ball and they are now both ______________ charged.
electrons; rod; pith ball; negatively
protons; pith ball; rod; positively
neutrons; rod; pith ball; positively
electrons; pith ball; rod; positively
Explain the charge distribution and the position of the leaves of the metal-leaf electroscope before and after being touched by a positively charged rod.
Before: The electroscope is neutral and the leaves are together. After: The electroscope is positive and the leaves are apart.
Before: The electroscope is negative and the leaves are apart. After: The electroscope is neutral and the leaves are together.
Before: The electroscope is positive and the leaves are apart. After: The electroscope is negative and the leaves are together.
Before: The electroscope is neutral and the leaves are apart. After: The electroscope is positive and the leaves are together.
What happens when a charged object touches a large neutral object such as Earth?
The charged object becomes more charged
The charged object becomes grounded and loses its net charge
The neutral object becomes charged
Nothing happens
In grounding, If the charged object was positively charged, what happens to the electrons?
Electrons from the Earth move toward the charged object
Electrons move away from the Earth toward the neutral object
Protons move toward the charged object
Nothing happens
According to the diagram, what is the charge of the hand?
Positively charged
Negatively charged
Neutral
None of the above
When the hand is close to the faucet, some electrons from the hand move toward the faucet and create an electric discharge. What happens when the hand is touching to the faucet?
Electrons move from the faucet to the hand
Electrons move from the hand to the faucet and create an electric discharge
No movement of electrons occurs
The faucet becomes negatively charged
What happens to the excess electrons during grounding, as shown in the diagram, if the hand is negatively charged and the faucet is initially neutral?
They stay in the hand
They go into Earth
The hand and the faucet share the electrons
They go into the air
What does the following symbol represent?
Resistor
Grounding
Battery
Capacitor
........... : a charged object comes near another object WITHOUT TOUCHING – causes it to POLARIZE.
Conduction
Grounding
Friction
Induction
When a negatively charged object is brought close to a neutral electroscope (without touching it), what happens to the charges in the electroscope?
Electrons in the electroscope move toward the top, and the entire electroscope becomes negatively charged.
Electrons in the electroscope are repelled toward the bottom, leaving the top positively charged.
Electrons in the electroscope move away from the top, and the bottom becomes positively charged.
Electrons in the electroscope are attracted to the charged object, leaving the bottom positively charged.
