Static Charges

Static electricity is 

• The balance of electrical charge on an object

• The imbalance of electrical charge on an object

• The discharge of electrical charge

• The build up of protons in the nucleus of an atom 

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• positive charge.

• negative charge.

• neutral charge

• No charge at all

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which is an example of static dischage?

• motor

• lightning

• thunder

• insulators

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

For an object to have a positive charge, it must ____.

• lose electrons

• gain electrons

• lose protons

• gain protons

Tags

NGSS.MS-PS2-3

Select all that describe insulators.

• allow charges to flow easily

• do not allow charges to flow easily

• plastic

• metal

• surround a wire

The image illustrate the concept of

• Friction

• Indaction

• Induction

• Static shock

Answer explanation

Opposite attracts and like charges repel, this is correct but remember ONLY electrons can move - Positives are in the nucleus and do not move. we say that the wall is charge by INDUCTION

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.

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.MS-PS2-3

NGSS.MS-PS2-5

If two objects with static charge are attracted, what do you know about them?

• They are both positively charged.

• They are both negatively charged.

• One is positively charged and one is negatively charged, but you won't be able to tell which is which.

• One is positively charged and one is negatively charged, and you can tell which is which by looking at them.

Tags

NGSS.MS-PS2-3

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

• Positive and neutral

• Positive and negative

• positive and neutral

• negative and negative

Tags

NGSS.MS-PS2-3