(a)   causes charges to move in a circuit.

• voltage
• energy
• electricity
• magnetism

Tags

NGSS.MS-PS2-5

Match the following terms with their correct descriptions.

• The potential difference between two points.

• current

• The flow of electric charge.

• distance

• The space between two points.

• voltage

• An electric current will always follow the path of least ________.

• resistance

In a parallel circuit, current from each bulb has its own ________.

• path

• resistance

• voltage

• charge

A complete, unbroken path through which electric charges can flow is called a(an)

• electric circuit

• electrical resistance

• magnetic field line

• magnetic pole

During a science experiment, Benjamin observed that one part of a freely swinging magnet always points

• east

• toward Earth's core

• to Earth's magnetic pole in the Northern Hemisphere

A magnet with two north poles is:

• possible

• impossible

• common

• rare

What happens when you remove a bulb in a parallel circuit containing three bulbs? (May be more than one answer)

• The other bulbs remain lit

• The circuit remains complete for the remaining bulbs

• The entire circuit breaks and all bulbs go out

• The current flow in the circuit stops

How can the strength of an electromagnet be increased? (May be more than one answer)

• Increase the current passing through the coil

• Add more loops of wire to the coil

• Use a stronger ferromagnetic material for the core

• Wind the loops of wire closer together

Tags

NGSS.MS-PS2-3

Fill in the blank: Opening the switch in a series circuit with two bulbs will cause ______.

• both bulbs to go out

• the first bulb to stay lit, the second to go out

• the circuit to become incomplete, stopping the current flow

• the brightness of the bulbs to increase

Which of the following is a result of opening a switch in a series circuit?

• A) The circuit becomes incomplete

• B) The current flow increases

• C) The bulbs become brighter

• D) The circuit becomes a parallel circuit