5th - Static electricity and magnetism

Define: Electricity.

• Electrons jumping from atom to atom

• Protons jumping from atom to atom

• Neutrons jumping from atom to atom

• Electrons moving.

How can loosely bound electrons move from to a different surface?

• Rubbing or friction.

• Appliying Heat.

• Applying electricity.

• With a conductor material in the middle.

Define: Charge imbalance.

• When two objects have a difference in the electrons and one is more "negative" than the other.

• When two objects with a different number of atoms get in touch.

• When the number of atoms in two objects is different and their electrons collide.

• When two objects with the same charge are in touch.

Select from the list, all the materials that are GOOD conductors (electrons can move easily)

• Iron

• Copper

• Aluminium

• Glass

• Rubber

Select from the list, all the materials that are insulators (electrons cannot move easily)

• Iron

• Copper

• Aluminium

• Glass

• Rubber

Select from the list, the objects that you can rub with your dry hair to create static electricity.

• Plastic ruler

• Plastic comb

• Ballon

• Metalic ruler

Select true or false:

A metalic object rubbed against dry hair, can accumulate charges and create static electricity.

• True

• False

Define: Magnetic field.

• Area around a magnet with magnetic force.

• The field near to the magnetic objects.

• The area around materials like wood and plastic.

• The field close to metalic objects.

Define: Magnetic object

• Objects that get attracted to a magnet.

• Objects that are not attracted to a magnet.

• Objects that contain some metal in them.

• Objects that ignore magnetism.

Select all the TRUE sentences.

• Positive and negative get attracted.

• Negative and positive get repelled.

• Positive and positive get attracted.

• Negative and negative get repelled.