The student uses marbles to represent the planets. She drops a large marble on the plastic sheet. It moves to the middle. Then she drops a smaller marble on the plastic sheet. It rolls toward the larger marble. What larger concept does the student's model best illustrate? A.
Gravity governs the movement of the planets in space, much like the marbles in the model.

B.
A planet at rest will remain at rest because of its inertia, much like the marbles in the model.

C.
Magnetism determines the curved paths of the planets in space, much like the marbles in the model.

D.
The force of a planet in motion depends on its mass and acceleration, much like the marbles in the model.

The kansas-nebraska act allowed the territories of kansas and nebraska to decide the issue of slavery by popular sovereignty. the people who lived in these territories would be able to vote on whether slavery would be allowed there. what effect did this have on kansas? a. settlers voted to allow slavery only in half of the territory. b. kansas became a slave state and joined the confederacy. c. settlers held a series of debates to them decide. d. pro-slavery settlers fought against anti-slavery settlers.

Which of the following methods could be considered a "best practice" in terms of informing respondents how their answers to an on-line survey about personal information will be protected? respondents are informed that investigators will try to keep their participation confidential; however, confidentiality cannot be assured.respondents are informed that a research assistant will transfer all the research data to a password-protected computer that is not connected to the internet, via a usb flashdrive. the computer is located in a research team member's office.the investigator uses the informed consent process to explain her institution's method for guaranteeing absolute confidentiality of research data.the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed.the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed

The process of rocks breaking down and becoming other rocks