If you rub a balloon with a piece of wool cloth, the balloon will:

• Be attracted to the wool cloth

• Be repelled by the wool cloth

• Have no interaction with the wool cloth

• Not enough information is given to determine what will happen

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If you rub two balloons with the same piece of wool cloth, the balloons will:

• Be attracted to each other.

• Repel each other.

• Have no interaction.

• Not enough information is given to determine what will happen.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following statements is incorrect?

• Two objects with the same type of charge repel each other.

• Two objects with opposite types of charge attract each other.

• Two objects made of different materials rubbed against each other acquire the same type of charge.

• All of these statements are correct.

Tags

NGSS.MS-PS2-3

Two pieces of transparent tape are pulled off a wooden tabletop. When they are brought near each other, they:

• Attract each other because they were prepared the same way.

• Repel each other because they were prepared the same way.

• Have no interaction.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When uncharged bits of paper are brought near a charged comb:

• There is no interaction because the paper is not charged.

• There is no interaction because the paper is too heavy to move.

• There is attraction because the paper is a dielectric.

• There is repulsion because the paper is a dielectric.

Tags

NGSS.HS-PS2-4

Which of the following statements is incorrect?

• Uncharged dielectrics can be attracted to both negatively and positively charged objects.

• Uncharged metals can be attracted to both negatively and positively charged objects.

• Uncharged metals will be more attracted to charged objects than to uncharged dielectrics.

• All of these statements are correct.

Tags

NGSS.HS-PS2-4

Polarization occurs when:

• Electrons move within an atom.

• Free electrons move within a solid.

• Both answers.

• None of the answers.

Tags

NGSS.HS-PS4-3

The angle of deflection of an electroscope needle indicates:

• If a positive charge is present.

• If a negative charge is present.

• How much charge is present.

• None of the answers.

An object can be discharged by:

• Grounding.

• Ions in the air.

• Water vapor in the air.

• All of the answers.

Tags

NGSS.HS-PS3-5

Which of the following statements is NOT correct about the magnitude of the electric force between two charged objects?

• It increases if one of the charges increases.

• It increases if the distance between the charges increases.

• It increases if both of the charges increase.

• It increases if the distance between the charges decreases.

Tags

NGSS.HS-PS2-4