Which is considered to be a scientific model?
a) a hypothesis
b) a guess based on conjecture
c) an opinion based on fact or conjecture
d) mathematical algorithms of natural event

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount

When can a theory be modified if a new type of technology allows for new observations that raise new questions? a-immediately, while the questions about the theory are being asked b-after new hypotheses related to the theory are tested in experiments c-only after the new observations disprove all parts of the theory d-while scientists begin to think about how the theory could improve

Define the terms moral development and moral reasoning