Charges

A small, positively charged ball is moved close to a large, positively charged ball. Which describes how the small ball likely responds when it is released?

• It will move toward the large ball because like charges repel.

• It will move toward the large ball because like charges attract.

• It will move away from the large ball because like charges repel.

• It will move away from the large ball because like charges attract.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A plastic rod becomes negatively charged when it is rubbed with a piece of wool. How does the rod become charged?

• Electrons move from the rod to the wool.

• Protons move from the rod to the wool.

• Electrons move from the wool to the rod.

• Protons move from the wool to the rod.

How does an object become negatively charged?

• It gains electrons.

• It loses electrons.

• It gains protons.

• It loses protons.

Why does Chelsea see sparks as she removes her clothes from the clothes dryer?

• conduction

• induction

• static discharge

• static electricity

Which factors affect the strength of the electric force between two objects?

• the mass of the objects and the distance between the objects

• the amount of charge on the objects and the type of charge on the objects

• the distance between the objects and the amount of charge on the objects

• the mass of the objects and the amount of charge on the objects

Tags

NGSS.MS-PS2-3

How does increasing the amount of charge on an object affect the electric force it exerts on another charged object?

• The electric force decreases because the amount of charge has a direct relationship to the force.

• The electric force decreases because the amount of charge has an indirect relationship to the force.

• The electric force increases because the amount of charge has an indirect relationship to the force.

• The electric force increases because the amount of charge has a direct relationship to the force.

Tags

NGSS.HS-PS2-4

What is the name of the area around a charged object where the object can exert a force on other charged objects?

• electric charge

• electric field

• electric force

• electric induction

Tags

NGSS.MS-PS2-5

For which pair of objects would adding the same amount of electrons to each object result in a decrease in the electric force?

• two positively charged objects

• two negatively charged objects

• two objects that have no charge

• two objects that have opposite charges

Tags

NGSS.MS-PS2-3

A positively charged object is placed to the left of a negatively charged object. Which best describes how the positively charged object will move?

• to the left, in the direction of the electric field lines

• to the right, in the direction of the electric field lines

• up in the direction that the field lines bend away

• down in the direction that the field lines bend away

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which will a positively charged object attract?

• an object that has a negative charge

• an object that has a smaller positive charge

• an object that has no charge

• an object that has a larger positive charge

Tags

NGSS.MS-PS2-3