Question

1. static electricity occurs when

a) protons move
b) neutrons change charge
c) atoms split
d) electrons transfer

1. which is an example of an electric field effect?

a) compass needle
b) balloons repelling
c) magnet attracting iron
d) rock falling

1. what produces electrostatic forces inside a storm cloud that lead to lightning?

a) sunlight heating the cloud
b) ground pushing electrons upward
c) cold air stopping electron motion
d) collisions between ice particles and water droplets

1. lightning travels to the ground during a storm because:

a) the ground is neutral but becomes polarized
b) the ground is positively charged
c) trees attract electricity
d) air is a good conductor

1. which law predicts the force between two charges?

a) newton’s
b) coulomb’s
c) ohm’s
d) faraday’s

Explanation:

Question 30

Static electricity is caused by the transfer of electrons (since protons are in the nucleus and don't move easily, neutrons have no charge, and atoms splitting is nuclear fission, not static electricity). So the correct option is D.

An electric field effect involves electric charges. Balloons repelling (after being charged) is due to electric fields. A compass needle is magnetic, a magnet attracting iron is magnetic, and a rock falling is gravity. So the correct option is B.

Inside a storm cloud, collisions between ice particles and water droplets cause electron transfer, creating electrostatic forces leading to lightning. Sunlight heating, ground pushing electrons, or cold air stopping motion don't cause this. So the correct option is D.

Answer:

D) Electrons transfer

Question 31