Charging Objects

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

• charge at all

Tags

NGSS.MS-PS2-3

Electrical charge built up on the surface of an object is called _________________.

• static electricity

• current electricity

• lightning

• electrons

During a lab a balloon was rubbed with a wooly fabric. This is an example of which type of charging?

• conduction

• friction

• induction

What types of charges attract?

• Positive and Positive

• Positive and Neutral

• Negative and Neutral

• Positive and Negative

Tags

NGSS.MS-PS2-3

What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

• The doorknob sends a burst of electric current into your body

• Millions of electrons go from your finger into the doorknob

• The doorknob sends millions of electrons into your finger

• Your finger becomes negatively charged

Tags

NGSS.MS-PS2-5

Which of the following is caused by static electricity?

• a stove getting hot when it is turned on

• a magnet being attracted to a refrigerator

• a lightning strike during a storm

• a light bulb coming on when a switch is turned on

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

the negatively charged particle in an atom, moves freely, can be released, shared, or “stolen” from an atom

• proton

• neutron

• electron

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

the charging of an object by the contact of a charged object to a neutral object (like touching a door knob)

• induction

• conduction

• friction

An electron is near two opposite charged sheets of metal.  The electron is _____  the positive sheet and ____ the negative sheet.

• attracted to / repelled by

• attracted to / attracted to

• repelled by / attracted to

• repelled by / repelled by

Tags

NGSS.HS-PS2-4

Unlike charges ________.

• repel

• attracts

• induct

Tags

NGSS.MS-PS2-3