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- 1. Multiple ChoiceIn a neutral atom, the number of electrons is equal to the number of _______.NeutronsOrbitsProtonssubatomic particles
- 2. Multiple Choice
If two charges repel each other, the two charges must be-
Positive and neutral
Positive and negative
positive and neutral
negative and negative
- 3. Multiple ChoiceAn object becomes charged when the atoms in the object gain or loseelectronsprotonsneutronsall of the above
- 4. Multiple ChoiceIf you rub a glass rod with a piece of silk, the rod becomes positively charged. This means thatfriction destroyed electrons in the rod.the silk has become negatively charged.protons have moved to the rod.glass attracts more protons.
- 5. Multiple ChoiceIf 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 byfriction.convection.induction.conduction.
- 6. Multiple ChoiceCharging by ____ occurs when electrons are transferred from one object to another by direct contact.reductioninductionconductionfriction
- 7. Multiple Choice
When you pull a cotton sweater off your skin, electrons are transferred from the ___________________ (cotton, skin) to the __________________ (cotton, skin). As a result, your body acquires a ___________ (+ , -) charge and the cotton sweater acquires a ___________ (+ , -) charge.skin, cotton, +, -cotton, skin, +, -skin , cotton, -, +cotton, skin, -, + - 8. Multiple Choice
Which of the following is an example of a conductor?
plastic
copper
glass
rubber
- 9. Multiple Choice
If the balloon has a negative charge, the hair must have what charge?
negative
positive
neutral
- 10. Multiple Choice
_______ is when there is a buildup of charges (more of one type of charge) on an object.
static electric discharge
static electricity
current electricity
- 11. Multiple Choice
When someone's hair is charged by the person holding onto the Van de Graaf generator, you are observing ___.
friction
conduction
induction
- 12. Multiple Choice
Select three that describe insulators.
allow charges to flow easily
do not allow charges to flow easily
plastic
metal
surround a wire
- 13. Multiple Choice
The ball on the string is being repelled (pushed away) by the metal bar.
What must be the charge on the ball?
postivie
neutral
negative
- 14. Multiple Choice
Read the following statements about electric force. Which statement is NOT CORRECT?
The smaller the distance between 2 charged particles, the stronger the electric force.
The higher the charges involved, the stronger the electric force.
The greater the distance between 2 charged particles, the weaker the electric force.
The smaller the distance between 2 charged particles, the weaker the electric force.
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