fill in the blank
Only _____ can be moved to/from atoms of a material.
A) protons
B) neutrons
C) electrons
C) electrons
why can protons NEVER move?
they are too tightly bound in the nucleus
what are charged atoms called?
ions
if you take away an electron, does it (the atom not electron) turn into a positive ion or a negative ion?
positive
true or false?
only insulated materials/objects can be charged
true
what is an insulated materials
a material which doesn’t allow electrons to move through it
what are fields (physics definition)?
fields are a region within which objects experience a force. (force fields)
fill in the blank:
gravitational fields exist around anything with ________
A) weight
B) mass
B) mass
what do electric field lines indicate?
they indicate the direction a positive charge would follow. they leave positive charges and enter negative charges
charged objects inside the electric field of other charged objects experience a force… what is that force called?
electrostatic force (of repulsion or attraction)
