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WorksheetsForces and Motion Practice Quiz
Total questions: 40
Worksheet time: 33mins
The area of magnetic force around a magnet is known as its _____________.
magnetic field
magnetic declination
magnetic fan lines
magnetic tan lines
These magnets would....
Repel
Attract
As the magnets get farther apart, the strength of the fields get.....
Weaker
Stronger
Stay the same
Moving a magnet near a compass can cause the compass needle to move, even though the magnet does not touch the compass. This observation is evidence for which characteristics of magnetic fields?
There is a north and south pole on a magnet.
Fields can exert non-contact forces.
Magnetic fields do not exist.
Electric currents are created by _______ magnetic fields.
Moving
Non-moving
Surrounding each magnetic is an invisible force field called
Gravity
A magnetic field
An electric field
The Force
Protons have a ____________ charge and Electrons have a _______________ charge.
Positive, Positive
Positive, Negative
Negative, Positive
Negative, Negative
Which statement is true about both magnetic and electric fields?
Like charges repel each other
Like charges attract each other
Like poles attract each other
What is a material through which electrons cannot move easily?
Conductor
Insulator
Magnet
Circuit
Electrical conductors have ____ resistance to the movement of electrons.
High
Low
What is the cause of electricity?
Magnetism
Gravity
Moving Electrons
Lightning
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 shows electric field lines?
A
B
C
A
B
C
D
What is produced by moving a permanent magnet through a coil of copper wire?
electricity
electromagnet
light
sound
Which of the diagrams shows the least gravitational force?
I
II
III
IV
Which of the following forces is attractive but never repulsive?
Gravitational Force
Electric Force
Magnetic Force
Electromotive Force
Which shows gravitational field lines?
A
B
C
What makes an electromagnet stronger?
Increasing the number of coils in the wire
Decreasing the number of coils in the wire
Decreasing the electric current
Decreasing the voltage
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
magnetism and thermal
electricity and thermal
electricity and magnetism
magnetism and radiant
chemical; mechanical
mechanical; electrical
electrical; mechanical
potential; kinetic
In a _______ a spinning turbine moves magnets which generates an electric current.
Motor
Generator
magnets can be turned on/off
you can turn an electromagnet on/off
magnets are more powerful
magnets have a North and South pole
What is the transfer of energy in when you plug in a motor and it spins?
chemical to mechanical
electrical to mechanical
mechanical to electrical
physical to potential
Mechanical
Electrical
Thermal
Potential
Which statement best explains the flow of energy through a motor?
battery-->electrical current-->copper wire rotor -->magnet--> mechanical energy
battery--> magnet--> electrical current--> copper wire rotor--> mechanical energy
magnet--> mechanical energy--> copper wire rotor--> battery--> electrical current
magnet--> copper wire rotor--> mechanical energy--> battery--> electrical current
what year did Michael Faraday discover electro magnetic induction
1831
1925
1879
1931
Ms Pippin rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
The balloons will repel each other.
The balloons will attract each other.
The balloons will become positively (+) charged.
The balloons will pop.
What is the major difference between static electricity and current electricity?
Current electricity involves a continuous flow of elecrons; static electricity is a sudden transfer of protons
Current electricity can be deadly; static electricity is almost always safe
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
What happens when you touch a metal doorknob after rubbing your shoes on the carpet?
The doorknob sends a burst of electric current into your body
Millions of electrons go from your finger into the doorknob
The doorknob sends millions of electrons into your finger
Your finger becomes negatively charged
Lightning occurs because ___.
the negative charges at the bottom of clouds are attracted to the positive charges on the ground.
the positive charges at the bottom of clouds are attracted to the negative charges on the ground.
the positive and negative charges inside clouds are attracted to each other
All of these reasons are correct.
Why does a Van de Graaff generator make your hair stand up if you touch the dome?
The current is trying to flow out of the hair ends.
The electrons gather on the hair ends and repel each other.
The hair is repelled by the dome of the Van de Graaff generator.
The hair is attracted to the surrounding air.
You walk across a shag carpet and become negatively charged. You became negatively charged because...
Protons from your body traveled to the carpet and therefore you became negatively charged
Protons from the carpet traveled to your body and therefore you became negatively charged
Electrons from your body traveled to the carpet and therefore you became negatively charged
Electrons from the carpet traveled to your body and therefore you became negatively charged.
