KS3 Static Electricity

In a neutral atom, the number of electrons is equal to the number of _______.

• Neutrons
• Orbits
• Protons
• subatomic particles

Tags

NGSS.MS-PS1-1

If two charges repel each other, the two charges must be

• Positive and neutral

• Positive and negative

• positive and neutral

• negative and negative

An object becomes charged when the atoms in the object gain or lose

• electrons

• protons

• neutrons

• all of the above

If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that

• friction destroyed electrons in the rod.
• the silk has become negatively charged.
• protons have moved to the rod.
• glass attracts more protons.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

If you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges in the surface are rearranged by

• friction

• convection

• induction

• conduction

Objects that have opposite charges

• are attracted to each other, and the force between the objects pulls them together.
• are attracted to each other, and the force between the objects pushes them apart.
• are repelled by each other, and the force between the objects pulls them together.
• are repelled by each other, and the force between the objects pushes them apart.  

Tags

NGSS.HS-PS2-4

A region around a charged particle that can exert a force on another charged particle is called an

• electric pulse

• electric charge

• electric force

• electric field

When you pull a cotton jumper off your skin, electrons are transferred from the skin to the __________________ (jumper/ skin).

As a result, your body acquires a ___________ (positive / negative) charge and the cotton jumper acquires a ___________ (positive / negative) charge.

• jumper, positive, negative

• skin, positive, negative

• jumper, negative, positive

• skin, negative, positive

A balloon is rubbed all over with wool.  The balloon will now attract wool because the balloon and wool

• are magnets
• have opposite charges
• have like charges
• have neutral charges

In a static discharge, which particles move from one object to another?

• protons
• neutrons
• electrons
• atoms