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Physics Review
Objective B1
1.
Of the four fundamental forces, which is the LEAST powerful?
A. Strong nuclear force
B. Gravitational force
C. Electromagnetic force
D. Weak nuclear force
2.
What is the cause of the gravitational force between the Earth and the Sun?
A. Earth’s magnetic field causes the gravitational force.
B. The Sun’s rotation about its axis causes the gravitational force.
C. The masses of both the Earth and Sun cause the gravitational force.
D. The tangential velocity of the Earth causes the gravitational force.
3.
Gravitational potential energy stored within a mass is a direct result of the
A. volume of the mass.
B. height of the mass.
C. rotation of the mass.
D. surface area of the mass.
4.
Two objects are at a fixed distance between each other. As the masses of these two objects increases, the strength of the gravitational forces
between them
A. increases.
B. decreases.
C. decrease then increase.
D. increase then decrease.
5.
As the separation between two masses increases, the strength of the gravitational forces between them
A. increases.
B. decreases.
C. decrease then increase.
D. increase then decrease.
6.
Your weight on Earth is a direct result of
A. Earth’s gravitational force acting on your mass.
B. Earth’s volume acting on your mass.
C. Earth’s core rotating and acting on your mass.
D. Earth’s gravitational force acting on your volume.
7.
The mass of an object is directly related to the
A. force of gravity acting on that object.
B. amount of space the object occupies.
C. amount of material in the object.
D. location of the object in space.
Objective B2
1.
The process by which an electric current is produced by moving a wire through a magnetic field is called
A. the flow of electrons.
B. electrical resistance.
C. electromagnetic induction.
D. electrical resonance.
2.
A temporary magnet made by wrapping a current-carrying wire around an iron core is known as a/an
A. alkaline battery.
B. electromagnet.
C. magnetic pole.
D. magnetic compass.
3.
Which of the following are different aspects of the same force that allows generators and transformers to work?
A. Magnetic forces and electric forces
B. Magnetic forces and nuclear forces
C. Electrical forces and mechanical forces
D. Electrical forces and frictional forces
4.
Electromagnetic induction is the process by which an electric current is produced by moving a wire in a magnetic field. Which of the following
devices works on the principle of electromagnetic induction?
A. Light bulb
B. Compass
C. Battery
D. Generator
5.
A transformer is a device in which alternating current in one coil of wire induces a current in a second coil. Which of the following properties is
necessary for a transformer to work?
A. Voltage is a measure of the amount of force pushing a current.
B. A wire carrying an electric current induces a magnetic field around it.
C. Electricity is transmitted over power lines at very high voltages.
D. When electrons flow through a material they meet resistance.
6.
A transformer is a device in which alternating current in one coil of wire induces a current in a second coil. Which of the following properties is
necessary for a transformer to work?
A. When a magnetic field changes an electric current will be induced.
B. Magnets are needed for an electrical current to flow through wires.
C. High voltage is needed to transfer electric current long distances.
D. A higher voltage is needed to run large appliances than small ones.
7.
Which of the following correctly describes a purpose of an electrical transformer?
A. Increase the resistance to the electrical current.
B. Increase the current carried by the power lines.
C. Change the voltage carried by the power lines.
D. Change the magnetism carried by power lines.
Objective B3
1.
Which of the following statements is true about the magnitude of force between two objects each holding an electrical charge of +3 x 10-3
Coulombs?
A. The hotter the objects are, the greater the electrical force between them.
B. The closer the objects are, the greater the electrical force between them.
C. The faster the objects move, the greater the electrical force between them.
D. The colder the objects are, the greater the electrical force between them.
2.
Analyze the diagram below, which shows two electrically charged objects. Use this diagram to answer the following question.
Which of the following would cause a decrease in the magnitude of the electrical force between the two objects?
A. Decrease the temperature of the objects.
B. Increase the temperature of the objects.
C. Decrease the distance between the objects.
D. Increase the distance between the objects.
3.
Analyze the diagram below showing two charged objects. Use this diagram to answer the following question.
Which of the following would cause an increase in the electrical force between the two objects?
A. Increase the distance between the two objects.
B. Make the charge on one object positive.
C. Make one object hotter than the other.
D. Increase the charge on one of the objects.
7.
Which of the following pairs of variables affect the magnitude of the electrical force between two electrically charged objects?
A. The kind of charge on the objects and the distance between them.
B. The temperature of the charged objects and the distance between them.
C. The material that the charged objects are made of and the
distance between them.
D. The magnitude of the charge on the objects and the distance between them.
5.
The four following diagrams below each show two electrically charged objects separated by the distances indicated. In the diagrams, “C”
stands for Coulomb, which is a unit of electrical charge. Use the four diagrams to answer the following question.
In which model is the magnitude of the force of attraction between the two objects STRONGEST?
A. Diagram I
B. Diagram II
C. Diagram III
D. Diagram IV
Objective B4
1.
Of the four fundamental forces, which is the LEAST powerful?
A. Strong nuclear force
B. Gravitational force
C. Electromagnetic force
D. Weak nuclear force
2.
What is the cause of the gravitational force between the Earth and the Sun?
A. Earth’s magnetic field causes the gravitational force.
B. The Sun’s rotation about its axis causes the gravitational force.
C. The masses of both the Earth and Sun cause the gravitational force.
D. The tangential velocity of the Earth causes the gravitational force.
3.
Gravitational potential energy stored within a mass is a direct result of the
A. volume of the mass.
B. height of the mass.
C. rotation of the mass.
D. surface area of the mass.
4.
Two objects are at a fixed distance between each other. As the masses of these two objects increases, the strength of the gravitational forces
between them
A. increases.
B. decreases.
C. decrease then increase.
D. increase then decrease.
5.
As the separation between two masses increases, the strength of the gravitational forces between them
A. increases.
B. decreases.
C. decrease then increase.
D. increase then decrease.
6.
Your weight on Earth is a direct result of
A. Earth’s gravitational force acting on your mass.
B. Earth’s volume acting on your mass.
C. Earth’s core rotating and acting on your mass.
D. Earth’s gravitational force acting on your volume.
7.
The mass of an object is directly related to the
A. force of gravity acting on that object.
B. amount of space the object occupies.
C. amount of material in the object.
D. location of the object in space.