Q: Which part of the atom has a negative charge?

OPTIONS:
- neutron
- nucleus
- electron
- proton
A: electron
Q: A generator converts mechanical energy to electrical energy by using a conducting metal loop turning in a

OPTIONS:
- magnetic field.
- gravitational field.
- steel sphere.
- copper sphere.
A: magnetic field.
Q: A negatively-charged ion has

OPTIONS:
- a heavier nucleus.
- a greater atomic mass.
- more electrons than protons.
- more electrons than neutrons.
A: more electrons than protons.
Q: Which kind of rock is produced by deposition and cementation?

OPTIONS:
- marble, a metamorphic rock
- sandstone, a sedimentary rock
- granite, an intrusive igneous rock
- pumice, an extrusive igneous rock
A:
sandstone, a sedimentary rock