Unit 2 Lesson 5

What is an electric force?

• a build up of electric charges in an object

• an imbalance of positive and negative chargers

• the speed that two like objects repel each other

• a push or pull between objects that have an electric charge

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Two positive electric charges ______ each other

• repel

• attract

• pull toward

• imbalance

Tags

NGSS.MS-PS2-3

Which combination of charges will ATTRACT each other?

• positive and ppositive

• positive and negative

• negative and negative

• no charge and no charge

Tags

NGSS.MS-PS2-3

Which of the following is an example of like electric charges repelling?

• clothes rubbing together in the dryer

• two balloons pushing each other apart

• a balloon with a charge lifting your hair

• a spark moving from your clothes to another object

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which change will decrease the electric force between two charged objects

• add more electric charges to them

• Bring them close together

• Move them far apart

• Rub them together

Tags

NGSS.MS-PS2-3

What does an imbalance of positive and negative charges cause?

• static electricity

• magnetic attraction

• objects to repel each other

• all of the object

Tags

NGSS.MS-PS2-3

Which of these events is caused by electric charges?

• an earthquake

• a lightning strike

• a snowstorm

• a flood

Tags

NGSS.MS-PS2-3

Michaela and her little brother Leo are taking laundry out of the dryer. Leo notices that some of the dry clothes stick together. Michaela tells them this is because of static electricity. WHY DO LEOS SOCKS STICK TOGETHER?

• They have only positive charges

• They have only negative charges

• They have balances positive and negative charges

• They have imbalanced positive and negative charges