8th Physical Science GMAS Review Electricity and Magnetism

Emily and Mason are building electric electric circuits in science class.  They attach three light bulbs in a series circuit.  What will happen if one of the bulbs goes out?

• All the bulbs go out.
• The two remaining bulbs will be brighter.
• The two remaining bulbs will be dimmer.
• The bulbs will remain lit at the same brightness.

Amy and Grayson have built a series circuit using a battery, some copper wire, and three light bulbs.  What should happen to the brightness of the light bulbs if they add another light bulb to the circuit?

• Nothing; the four bulbs will remain as bright as the original three bulbs.
• The fourth bulb will be dimmer, and the first bulb will be brightest.
• The four bulbs will be brighter than the original three bulbs.
• The four bulbs will be dimmer than the original three bulbs.

A switch is inserted into a series circuit of Christmas lights. During the night, the switch is left open.  The lights will

• continue to burn.
• be turned off.
• become a parallel circuit.
• burn brighter.

Will has built a circuit with a single 1.5 V battery connected in series to three light bulbs.  The light bulbs are not as bright as he would like.  What can he do to make them burn more brightly?

• add a fourth light bulb in series
• connect a second battery in parallel
• connect a second battery in series
• A and C only

Tags

NGSS.MS-ETS1-1

Which one of the following parts of a circuit changes electrical energy into another form of energy?

• conductor
• resistor
• base
• voltage source

Tags

NGSS.HS-PS3-3

Increasing the current applied to an electromagnet will affect which of the following?

• the voltage delivered by the electromagnet
• the magnetic field exerted by the electromagnet
• the mass of the electromagnet
• the nuclear force delivered by the electromagnet

Tags

NGSS.HS-PS2-5

Which of the following will attract one another?

• the north pole of a magnet and the south pole of another magnet
• the north pole of a magnet and the north pole of another magnet
• the south pole of a magnet and the south pole of another magnet
• all of the above

Tags

NGSS.MS-PS2-3

Coach Campbell showed the class several lights connected in a circuit.  One light bulb burned out.  All of the other lights then turned off.  What kind of circuit had he been showing the class?

• a circuit with too many batteries
• a circuit with too many wires
• a parallel circuit
• a series circuit

Electromagnet            Number of wire loops
R                                 80
S                                 120
T                                 100
U                                 115  
Each letter represents an electromagnet with the number of its wire loops listed beside it.  Which electromagnet will attract or repel a bar magnet with the greatest force?

• R
• S
• T
• U

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Light bulbs on a string of lights are connected using parallel circuits.  
Which of these BEST explains why parallel circuits are used instead of series circuits?

• If one light goes out on a parallel circuit, all the other lights will go out.
• If one light goes out on a parallel circuit, no other lights will go out.
• Parallel circuits use less energy.
• Parallel circuits are easier to make.