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WorksheetsField Forces
Total questions: 40
Worksheet time: 27mins
Which of the two below result in an attractive force?
A positive charge and a negative charge
Two negative charges
Two south poles
A north pole and a south pole
Two postive charges
Static electricity is the buildup of charges between two objects. What best explains why a balloon is attracted to hair when the two have been rubbed together?
The balloon and hair both have positive charges
The balloon and the hair both have negative charges
The balloon and the hair both have neutral charges
The balloon and the hair both have opposite charges
Which of the following most closely resembles an electromagnetic?
Two bar magnets are held close together. They are released and allowed to move freely. The bar magnets quickly come together. Which best explains why this happens?
The poles facing one another are both south poles
The poles facing one another are both north poles
The poles facing one another are opposite poles
One magnet was bigger than the other
In an electromagnet, coils of wire are wrapped around a magnetic object to generate a magnetic field. What the is relationship between number of coils and the strength of the magnetic field?
The more coils an electromagntic has, the stronger the magnetic field
The more coils an electromagntic has, the weaker the magnetic field
The larger the metal object, the stronger the magnetic field is
There is no relationship between number of coils and the strength of a magnetic field
What is the cause of electricity?
Magnetism
Gravity
Moving electrons
Lightning
The charge on the left is ____ and the charge on the right is ___
positive ; positive
negative ; negative
negative ; positive
positive ; negative
The Law of Universal Gravitation states that objects with mass are attracted with a force that is ____________ to their masses.
inversely proportional
directly proportional
neutral
the same
When electrons are transferred from one object to another without direct contact, this is called ___________.
induction
conduction
radiation
reduction
Grounding an object helps create a _______________ charge.
positive
negative
neutral
Conductors, like metals, allow ____________ to move more freely.
protons
electrons
neutrons
The transfer of electrons through direct contact is known as _____________.
conduction
induction
grounding
a field
The only particles that move freely amongst atoms are _____________.
protons
neutrons
electrons
An object’s weight...
is caused because it is pulled towards the Earth.
is caused by the Earth’s magnetic field.
is caused by the air pushing down on it.
stays the same, even if its mass changes.
Which statement is not true?
The Earth attracts objects because it has a large mass.
You are attracting this laptop with a small force of gravity.
Only large objects like the Earth produce a force of gravity.
Your body is pulling the Earth towards it.
Gravity is less on the Moon than on the Earth because:
the Moon is smaller than the Earth.
the Moon has a bigger mass than the Earth.
the Moon is bigger than the Earth.
the Moon has less mass than the Earth.
Which of THREE the following are ferromagnetic materials?
Cobalt
Glass
Iron
Nickel
Plastic
Which of the following relationships between distance and magnetic force is correct?
increased distance = increased magnetic force
decreased distance = decreased magnetic force
increased distance = decreased magnetic force
There is no relationship
Protons have a ____________ charge and Electrons have a _______________ charge.
Positive, Positive
Positive, Negative
Negative, Positive
Negative, Negative
If electrons transfer from a wool square to a pvc wand, the wool becomes ______________ and the wand becomes_____________.
Positive, Positive
Positive, Negative
Negative, Positive
Negative, Negative
Which of the following forces is attractive but never repulsive?
Gravitational Force
Electric Force
Magnetic Force
Electromotive Force
What is a material through which electrons cannot move easily?
Conductor
Insulator
Magnet
Circuit
A charged balloon is brought near an electroscope but does not touch the electroscope. This is an example of charging by
conduction
convection
friction
induction
Electrons move only within their atoms. The electrons react to electric fields, resulting in individual atoms having charged ends that are attract to charged objects
friction
conduction
polarization
induction
What is Coulomb's Law?
The strength of the force is determined by the size of the charge and the distance between the charged particles.
Electric charge can neither be created nor destroyed but can be converted.
There is an opposite and equal force to all charges
Electric charge is transferred and transformed
What option best describes this field?
A strong electric field generated by two positive charges. They would attract each other.
A strong electric field generated by two positive charges. They would repel each other.
What option best describes this field?
An electric field generated by two positive charges. They would attract each other.
An electric field generated by two negative charge which would attract each other.
An electric field generated by two opposite charges. They would attract each other.
