7.1 Fields

Question 1

What is a force field?

Answer 1

A region in which an object experiences a non-contact force.

Question 2

What does the distance between field lines tell us?

Answer 2

That the field strength or stength of the force extered by the field.

(Close=stronger, far apart=weaker)

Question 3

What interactions form force fields?

Answer 3

• Masses for gravity
• Static charge for electric
• Moving charges for magnetic

Question 4

What are the similarities between gravitational and electrical forces?

Answer 4

• Inverse-square force laws
• Use field lines to be depicted
• Potentials
• Equipotential surfaces

Question 5

What are the differences between gravitational and electrical forces?

Answer 5

• Masses only attract
• Electric charges can repel or attract