Worksheetsnon contract forces
Total questions: 15
Worksheet time: 5mins
To demonstrate static electricity, a teacher takes an inflated balloon and rubs it against his hair. The rubber balloon picks up electrons from his hair, which makes his hair have
a net negative charge
a neutral charge
a net positive charge
Which rule explains why you would not use a brass nail to make an electromagnet?
brass has magnetic domains that can turn any direction
brass can't become magnetized
electricity flows from positive to negative
metals don't conduct electricity
When _______________ travels through a
conductor, a magnetic field is created
current
a magnetic field
neutrons
How can the strength of an electromagnet be increased? (mark all that apply)
increase the current flowing through the coil
decrease the number of coils
add an amplifier to it
put copper core inside the coil
Stephan claims that Earth has both a gravitational field and a magnetic field. Which statement best supports his claim?
Any object will fall to the ground.
A bar magnet will fall to the ground.
Any object will fall to the ground, and a compass can be used for navigation.
A compass points in the direction of both the magnetic and gravitational fields.
as the mass of an object increases, the pull of gravity...
Increases
Decreases
Stays the same
