WorksheetsTypes of Forces
Total questions: 66
Worksheet time: 39mins
Which set of charged particles is likely to experience a greater force? Assume distance is the only difference between the sets.
Set A
There is not enough information.
Set B
They are both the same.
A roller coaster uses electromagnets on the track as a starting launcher. The electromagnets are switched on in sequence and propel the roller coaster forward. What else is likely to be a feature of the roller coaster?
The electromagnets take time to work.
The roller coaster cannot stop because of the attractive forces.
A bumpy ride due to the electric field.
The current can be reversed to allow for a reverse ride.
Which is a determining factor for the direction a motor spins in an electric motor?
Direction of the magnetic field
Strength of the magnet
Amount of current in a wire
Direction of the motor
What happens when a wire that carries electric current is placed in a magnetic field?
The electric current always decreases.
The wire experiences acceleration.
The wire experiences a force.
The electric current in the wire stops.
What effect will increasing the number of magnets in an electric motor have on the speed of the motor?
The speed of the motor is not dependent on the magnets.
The motor will run faster.
The motor will run slower.
The speed of the motor is unchanged.
Which would increase the strength of an electromagnet?
Increasing the distance between the coils.
Using a weaker magnet.
Increasing the number of coils in the wire.
Decreasing the electric current.
What can affect the strength of an electromagnet?
The magnetic field of an electromagnet.
The potential energy of the electromagnet.
The direction of the electric current flowing through the electromagnet.
The amount of electric current flowing through the electromagnet.
If you have two particles at a certain close distance, what happens if the charge on one particle is increased?
The force between the particles will stay the same.
Charged particles are not affected by the charges of other particles.
The force between the particles will increase.
The force between the particles will decrease.
What direction must a wire carry a current relative to a magnetic field to experience forces?
The direction does not matter.
In line with the magnetic field
Perpendicular to the magnetic field
Parallel to the magnetic field
What happens to two charged objects as the distance between them increases?
The forces and fields decrease
The forces and fields increase
The forces and fields are not dependent on distance.
The forces and fields are unchanged
How will a negative charge interact with a negative charge?
A negative charge will ionize another negative charge.
A negative charge will repel another negative charge.
A negative charge will attract another negative charge.
A negative charge will absorb another negative charge.
How will a positive charge interact with a negative charge?
The charges will repel.
The charges will ionize.
The charges will attract.
The charges will absorb.
Which statement best describes electromagnetism?
Electromagnetism is gravitation of two objects.
Electromagnetism is a compound of matter.
Electromagnetism is energy associated with charge.
Electromagnetism is the forces and fields associated with charge.
One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?
The balloon has a positive charge and the comb is neutral.
The balloon and the comb have the same electrical charge.
The balloon has a negative charge and the comb is neutral.
The balloon and the comb have opposite electrical charges.
Marty rubbed a balloon on his shirt. The balloon was then able to stick to the wall of the room. Which picture best represents the charges of the particles on the balloon and the wall that cause the balloon to be attracted to the wall?
When Mandy took clothes out of a dryer, she observed that a sock was clinging to a shirt. Which situation could cause the sock to be attracted to the shirt?
Both the sock and shirt have large positive charges.
Both the sock and shirt have small negative charges.
The sock has a small positive charge but the shirt has a small negative charge.
The sock has a small positive charge while the shirt has a large positive charge.
Two electrically opposite charges are separated by a fixed distance. Which action will provide the greatest increase in the force of attraction between the charges?
Halve each charge and double the distance between the charges.
Halve each charge and halve the distance between the charges.
Double each charge and halve the distance between the charges.
Double each charge and double the distance between the charges.
Which of the following does NOT affect the strength of an electromagnet?
The number of time the wire is looped around electromagnetic
The distance of the object to the eletromagnet
The type of the material of the object
The color of the magnet and the color of the object
The picture shows the electric charge of a metal sphere. Which object will most likely be repelled by the metal sphere?
a paper with a negative charge
a glass with a positive charge
a magnet with its north pole facing the sphere
a magnet with its south pole facing the sphere
A student recorded the following information about two magnets: • When magnet 1 was held above a collection of paper clips, 8 paper clips jumped to the magnet. • When magnet 2 was held above the same collection of paper clips, 14 paper clips jumped to the magnet. What can you concluded about the two magnets?
Their magnetic fields are the same
Magnet 1 has a stronger magnetic field than Magnet 2.
Magnet 2 has a stronger magnetic field than Magnet 1.
The paper clips have a stronger magnetic field.
Which of these object pairs are exerting a force on each other?
All of these are exerting forces on each other.
a car and a road
the Sun and the Earth
a chair and a person
What is the factor responsible for Earth’s gravity?
The Moon
The Sun
Earth’s mass
Earth’s atmosphere
What keeps all the planets in orbit around the Sun in our solar system?
Potential energy
Electromagnetic energy
Gravitational force
Electromagnetic force
Which diagram shows the correct direction of gravitational force between the Earth and the Moon?
The masses of four planets are shown. Which two planets will have the greatest gravitational force between them? Assume equal distance.
Planets D and A
Planets B and C
Planets C and D
Planets A and B
The masses of four planets are shown. Which planet would have the most gravitational force?
Planet D
Planet A
Planet C
Planet B
Two objects are shown in the figure. What happens to the gravitational force if the distance between object M1 and M2 is doubled?
The gravitational force decreases.
The gravitational force increases.
The objects will no longer have a gravitational force.
The gravitational force remains the same.
Two objects are shown in the figure. What happens to the gravitational force if the mass of object M2 is doubled?
The gravitational force will increase.
The gravitational force will not change.
The objects will repel.
The gravitational force will decrease.
The Earth is more massive than the moon. How will a person’s weight on the moon compare to their weight on Earth?
A person will not be able to measure weight on the moon.
A person will weigh the same on both because gravity is the same.
A person will weigh more on the Moon because gravity is greater.
A person will weigh more on the Earth because gravity is greater.
The Sun is more massive than the Earth. Which has more gravitational force on a person standing on Earth?
The Sun because it has more mass than the Earth.
The Sun because there is more distance between the Sun and person.
The Earth because it has less mass than the Sun.
The Earth because there is less distance between the Earth and person.
The Sun is more massive than the Earth. Which has more gravitational force at the surface?
The Sun
The gravitational force is the same.
Size is not a factor in gravitational force.
The Earth
Which of these has gravity?
A ball
All of these have gravity.
A planet
A person
Which force is always attractive?
electromagnetic force
gravitational force
force and motion
magnetic force
Why does the moon orbit around the earth?
The Earth and Moon repel each other due to gravitational forces.
Electromagnetic forces between the Earth and Moon.
Gravitational forces between the Earth and Moon.
Magnetic forces between the Earth and Moon.
Tides on Earth are influenced more by the Moon than the Sun because the Moon is
closer than the Sun.
brighter than the Sun.
larger than Earth.
colder than Earth.
The magnitude of the gravitational force between two planets depends on the
speed the planets rotate.
other nearby planets.
volume of the planets.
distance between the planets.
Between which two metal spheres is gravitational force the greatest?
The gravity of the Sun is 179 times that of the gravity of the Moon. Which of the following is the main reason that the Moon has a stronger gravitational effect on Earth’s oceans and tides than does the Sun?
Mass plays a greater role in gravitational force than distance.
Distance plays a greater role in gravitational force than mass.
The mass of solids applies more gravitational force than the mass of gases.
The speed of the Moon’s orbit around Earth applies a stronger gravitational force on the oceans than does the Sun.
The amount of gravitational attraction between the Moon and an astronaut standing on its surface depends on the astronaut’s distance from the center of the Moon and the astronaut’s
mass
height
shape
weight
Which is needed to determine the amount of gravitational force between two objects?
distance and mass
weight and time
volume and mass
area and weight
When placed at equal distances apart, the greatest gravitational attraction will be between two
refrigerators
skateboards
school buses
bowling balls
What is the relationship between mass and gravitational pull?
Higher mass creates higher gravitational pull.
Lower mass creates higher gravitational pull.
Higher gravitational pull creates more mass.
Lower gravitational pull creates more mass.
The gravitational force of the Sun is powerful enough to hold Earth in orbit even though Earth is an average of 150 million kilometers away. Which statement best describes why objects with much less mass than Earth are not pulled off the surface of Earth toward the Sun?
Objects on Earth are orbiting the Sun too quickly.
Objects on Earth have too little mass on which to pull.
Objects on Earth are held by the gravity of the Moon.
Objects on Earth are influenced more by the gravity of Earth than by the gravity of the Sun.
Two identical objects are shown below. In which case is the gravitational force the least?
Jupiter revolves around the Sun in a predictable pattern because
Jupiter has a greater mass than other planets.
the electromagnetic force from the Sun reaches Jupiter.
the force of gravity between Jupiter and the Sun maintains the orbit.
Jupiter has high winds that keep it moving at a constant rate.
The planets revolve around the Sun in their respective orbits. Which keeps the planets moving in orbit around the Sun?
composition of the planets
gravitational force
ultra magnetism
planetary axes
Planets in the Solar System are in constant motion. What factor has the greatest effect on the orbits of the planets?
the size of the planets
gravitational pull of the Sun
the composition of the planets
electromagnetic radiation from the Sun
Uranus is one of the outer planets of the solar system. The average distance of Uranus from the Sun is 2.87 billion kilometers. Which best explains why Uranus revolves in its orbit instead of moving out into space?
The orbit of Neptune limits Uranus.
Gravity pulls Uranus toward the Sun.
Electromagnetic energy pulls on Uranus.
Other planets have the same mass as Uranus.
Sir Isaac Newton stated that every object in the universe attracts matter. The attraction depends on the mass of an object and the distance between the objects. What type of force did Newton describe?
centripetal force
generalized force
centrifugal force
gravitational force
The planets in the Solar System revolve around the Sun because the Sun is
made of hydrogen and helium.
older than other objects in the Solar System.
the source of most heat and light energy.
the strongest source of gravity in the Solar System.
The gravitational force of the Sun affects the planets in our Solar System. Which of these is influenced the most by this force?
axial tilt
orbital path
the masses of the planets
the number of moons per planet
Which of the following allows the planets to stay in orbit?
the Moon’s gravity
the Sun’s gravity
magnetism
rotation
Gravity can be defined as a force of attraction between objects. The effects of gravity can be witnessed in many systems. Which of these actions is an example of gravity influencing other systems?
surface water evaporating into the atmosphere
planets moving around the Sun in an elliptical pattern
glaciers melting because of increasing temperatures
groundwater moving to the surface in an artesian well
Earth, along with the other planets, revolves around the Sun. The planets revolve in a counterclockwise direction. The cause of the revolution is mostly due to which force?
electrical
frictional
gravitational
magnetic
Which diagram shows electric field lines?
Diagram A
None of these
Diagram C
Diagram B
How can you make a magnet move away from another magnet without the magnets touching?
Set the magnets near each other on a table and wait.
Put the north pole of one magnet near the north pole of the other.
Put the north pole of one magnet near the south pole of the other.
You cannot make the magnets move without touching.
Which diagram shows gravitational field lines?
Diagram C
Diagram B
None of these
Diagram A
What is a difference between gravitational fields and electric fields?
Electric fields are always attractive.
Electric fields are always repulsive.
Gravitational fields are always attractive.
Gravitational fields are attractive or repulsive.
How does electromagnetic equipment, seen in this image, pick things up?
An electric current produces a magnetic field which attracts the metal.
An electromagnet covers more area than the force of gravity.
The force of the electromagnet is weaker than the force of gravity.
The force of the electromagnet is longer than the force of gravity.
How does a compass work?
The Earth is a magnet that attracts all negatively charged objects, like the compass.
Both the Earth and a compass are magnets and the compass aligns with Earth’s magnetic field.
The needle of the compass is a magnet, which is a north pole pointing to the Earth’s South Pole.
The needle of the compass is a magnet, which is a south pole pointing to the Earth’s North Pole.
Why should a strong magnet not be placed near a credit or debit card?
The cards use a magnetic strip which can be affected by the magnet.
The magnet will discolor the card.
The magnet can magnetize the card causing it to become a magnet.
The cards will not be affected by the magnet.
What will happen as the south pole of magnet is moved closer and closer to the south pole of another magnet?
The repulsive force between the two magnets will become stronger as they move closer together.
The attractive force between the two magnets will become weaker as they move closer together.
The attractive force between the two magnets will become stronger as they move closer together.
The repulsive force between the two magnets will become weaker as they move closer together.
What are the paper clips experiencing in the image?
A gravitational force acting on the magnet.
An electric force acting on the magnet.
An electric force acting on the paperclips from the magnet.
Magnetic and gravitational forces acting on the paper clips.
Which type of force does not act at a distance?
magnetic
gravitational
frictional
electric
What happens when you place an object in a magnetic field?
The object will never accelerate.
The object will make the magnetic field go away.
Nothing will happen.
The object will be affected by the field.
How are forces able to act at a distance?
fields that act on objects
attractive charges
negative charges
positive fields
