Physical Science Exam 5 Review

Which choice can be correctly defined as “the sum of all charges in a closed system remains constant”?

• law of conservation of momentum

• • law of conservation of mass

• law of conservation of energy

• law of conservation of charge

Study the image of two objects with initial charge. When the objects interact, which option indicates a possible net charge for each object? 

• Object A: +5
  Object B: +3

• Object A: +8
  Object B: +6

• Object A: –2
  Object B: +2

• Object A: +1
  Object B: +1

Tags

NGSS.HS-PS3-5

When the two objects come in contact, which choice most accurately describes the behavior of electric charges?

• Some electrons move from the neutral object to the positively charged object. The neutral object becomes positively charged. The object that was initially charged becomes neutral.

• Some protons move from the positively charged object to the neutral object. The neutral object becomes positively charged. The object that was initially charged becomes neutral.

• Some electrons move from the neutral object to the positively charged object. Both objects become positively charged, but the object that started positively charged is less positively charged than it was initially.

• Some protons move from the positively charged object to the neutral object. Both objects become positively charged, but the object that started positively charged is less positively charged than it was initially.

Tags

NGSS.MS-PS2-3

Examine the scenario.

A negatively charged conductor is brought in contact with a neutral conductor. 

Which choice most accurately describes the motion of charge between these two objects?

• The protons in the neutral object are attracted to the charged object. Some of the protons move from the charged object to the neutral object, resulting in two negatively charged objects.

• The electrons in the charged object are attracted to the protons in the neutral object. Some of the electrons move from the charged object to the neutral object, resulting in two negatively charged objects. 

• The electrons in the charged object are attracted to the protons in the neutral object. Some of the electrons move from the charged object to the neutral object, resulting in two negatively charged objects. 

• The electrons in the charged object are attracted to the protons in the neutral object. Some of the electrons move from the charged object to the neutral object. Finally, the neutral object becomes negatively charged, while the initial charged object becomes neutral. 

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-4

Which choice can be defined as the space around any charged particle that is directed away from a positive charge and towards a negative charge?

• gravitational field

• proton field

• electric field

• magnetic field

If the arrows show the direction of the electric field, which choice most accurately describes the behavior of the proton in the field?

• The proton would accelerate downward.

• The proton would accelerate upward.

• The proton would move with constant velocity downward. 

• The proton would move with constant velocity upward.

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-4

Examine the scenario. A charged particle is placed in Object A’s electric field.

Which choice correctly describes a factor that would strengthen the force the particle experiences in the electric field?

• Increase the distance between the particle and Object A

• • 
    

    Increase the mass of the particle.

• • 
    

    Decrease the magnitude of the charge of Object A.

• Bring the particle closer to Object A.

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-4

Which choice most accurately describes the method of storing electrical energy in a battery?

• A battery can store energy when placed in a circuit. A chemical reaction occurs inside a battery, releasing the energy to push protons in the circuit.

• A battery can store energy when placed in a circuit. Mechanical energy is stored in the battery. This energy is released to push protons in the circuit.

• • 
    

    A battery can store energy when placed in a circuit. Mechanical energy is stored in the battery. This energy is released to push electrons in the circuit.

• A battery can store energy when placed in a circuit. A chemical reaction occurs inside a battery, releasing the energy to push electrons in the circuit.

Which option correctly defines an electric current?

• the movement of protons due to a potential difference between two points in a circuit

• the movement of protons due to a difference in elevation between two points in a circuit

• the movement of electrons due to a difference in elevation between two points in a circuit

• the movement of electrons due to a potential difference between two points in a circuit

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-5

Which choice most accurately describes voltage?

• the amount of work required to move 1 C of charge between two points

• the amount of electrical energy converted every second

• the amount of charge moving through a point in a circuit every second

• the amount of electrical energy in a circuit