The purpose of your Masters research is to teach you how to handle the responsibilities of a research project. Masters project are usually closely supervised by your advisor, but YOU are responsible for doing all the work. You are not expected to do something revolutionary or groundbreaking for a Masters; often a professor may have a large project that gets broken into smaller pieces for Masters students. Your advisor’s research grants cover the costs; Masters students rarely have to apply for much grant money.
In the sciences, a Masters degree is usually a 2-year program. Typically, you spend your first semester doing background research and coming up with your research proposal. You spend your second semester, the summer, and the following fall semester conducting your research, and your last semester writing your thesis. A Masters program is very fast-paced; you only have two years to complete everything, so you really can’t drag your feet. The fast pace is advantageous in that you earn the degree quickly, so even if the workload is stressful, you know it won’t take long to finish up and have your degree in hand.
The purpose of a doctorate program is to determine whether you can devise and conduct a research project on your own. Doctorate students still have an advisor, but they are often more ‘hands-off’. Unlike a Masters student, a doctorate student is expected to develop a new hypothesis to completely test for their research, and you may be responsible for writing grants to cover more of the expenses related to your project.
A doctorate (PhD) is usually a 4-year program. Typically you will spend your first year doing background research, developing your hypothesis, and maybe collecting some primary data to test it. The next two years are spent on research, and the final year is spent writing your dissertation. Doctorate students are usually expected to publish some of their results BEFORE they can graduate.