7th TEST REVIEW Electricity & Magnetism

What causes lightning?

• A similarity in electrical charge?

• Electrons flowing through a conductor

• A difference in electrical charge

• Raindrops conducting electricity from clouds to the ground

What is the major difference between static electricity and current electricity?

• Current electricity involves a continuous flow of neutrons; static electricity is a sudden transfer of protons.

• Current electricity can be deadly; static electricity is almost always safe.

• In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons.

• Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons.

Which of the following atoms is considered neutral?

• An atom with 5 protons, 6 neutrons, and 5 electrons.

• An atom with 5 protons, 5 neutrons, and 6 electrons.

• An atom with 6 protons, 5 neutrons, and 5 electrons.

• An atom with 6 protons, 6 neutrons, and 5 electrons.

The nucleus of an atom contains ___________.

• Neutrons

• The mass of an atom

• Protons

• All of these

Tags

NGSS.MS-PS1-1

True or false: Matter is anything that has mass, takes up space, and is made of atoms.

• True

• False

Tags

NGSS.MS-PS1-1

Which of the following would be an example of a series circuit?

• Electric sockets in the home

• Street lights outside your house

• Computers in an office building

• A string of holiday lights

Each of the following would be an example of an insulator except ___________.

• Copper

• Rubber

• Glass

• Plastic

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A material through which electrons can move easily is a ___________.

• Conductor

• Electromagnet

• Insulator

• Nucleus

When you break an iron magnet into two pieces, you get __________.

• 2 north poles

• 2 south poles

• 2 north poles and 2 south poles

• A piece of iron that is no longer magnetic.

A circuit that has more than one closed path for current to follow is referred to as a(n) _________.

• Series circuit

• Magnetic circuit

• Open circuit

• Electron circuit

• Parallel circuit