Fields - Gravitational and Electric

How can a neutral object become charged?

• by being dipped in water

• by being stuck to the desk with tape

• by allowing gravity to work on it

• by having electrons added or removed

Tags

NGSS.HS-PS3-5

Which statement best describes the electric fields in the image?

• The charges are neutral.

• Both charges are negative, so the field lines are alike.

• The field lines move toward a positive charge and away from a negative charge.

• The field lines move away from a positive charge and toward a negative charge.

Tags

NGSS.HS-PS3-5

What happens to the field strength as the distance between two charged objects decreases?

• the strength stays the same

• the strength increases

• the strength decreases

• the strength fluctuates between positive and negative

Tags

NGSS.HS-PS2-4

Which diagram correctly shows the electric field around a negative charge?

• A

• B

• they are both positive

Tags

NGSS.HS-PS2-5

Which diagram correctly shows the field lines between two like charges?

• A

• B

• Both

• Neither

Tags

NGSS.HS-PS3-5

Cameron and Morgan are each holding a bar magnet with opposite poles facing each other. They walk in opposite directions until they stop feeling their magnet pull towards the other one. What can they conclude about the distance between them when they stop feeling their magnets pull?

• They are outside the magnetic field of their magnets.

• The distance made the magnets' force stronger.

• The magnetic fields are far enough apart to change direction.

• The magnetic field was weaker when they were close.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If Earth had twice the mass it has now, how would the gravitational force between it and the Sun change?

• The gravitational force would be twice as much as it is now.

• The gravitational force would be four times as much as it is now.

• The gravitational force would be half as much as it is now.

• The gravitational force would be the same as it is now.

Tags

NGSS.HS-PS2-4

Which of the diagrams shows the least gravitational force?

• I

• II

• III

• IV

Tags

NGSS.HS-PS2-4

If I triple the value of charge of a test charge the electric field will

• Increase by 3 
• Increase by 9
• Not change
• Decrease by 9

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

In what direction will a negatively charged particle accelerate in an electric field?

• In the same direction as field
• In opposite direction as field
• Perpendicular to field
• Impossible to tell

Tags

NGSS.HS-PS2-4