CAP pre/post test Snaptricity

How does electricity turn the shaft of a motor (in the Snaptricity kit)? It does it through...

• current

• a meter

• magnetism

• contact

Tags

NGSS.MS-PS2-5

NGSS.MS-PS3-5

What is electricity?

• An attraction & repulsion of particles in a material.

• How fast current is flowing.

• Tiny fragments of iron.

• Parallel sub-circuits that do different things

The electrical pressure exerted by a battery or other power source is called:

• Current

• Circuit

• Amps

• Voltage

The power of electricity is expressed in:

• Amps

• Voltage

• Watts

• Current

What determines if a material is an insulator? If the material has...

• their electrons loosely-held & the electrons can move easily.

• special wires designed to break when an unexpectedly-high current flows.

• their electrons locked in tight & there is no room for more.

• fuses designed to shut down a circuit when something is wrong.

What occurs when wires from different parts of a circuit connect accidentally?

• short circuit

• friction

• electric paths

• complex switches

An alternating current or AC is:

• an electrical current that is constant & unchanging

• electricity from a battery

• an electrical current that is changing

• an electrical current that bypasses the circuit resistance

Why does a compass needle always point North?

• It is made of material from the North Pole.

• It is attracted to the earth's magnetic force.

• It is made of titanium which has a wooden field.

• It orbits around another celestial object.

What allows one circuit to create a current in another circuit using magnetic fields?

• electromagnetism

• a tower

• friction

• a transformer

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A generator uses:

• wire that is wrapped into a coil.

• mechanical motion to create electricity.

• overloaded batteries & electromagnets with thin rods.

• one circuit to create a magnetic field that controls another circuit.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5