Science Buddies: "Ask an Expert"

which one should I use. How Does the Speed of the Rotor Affect the Amount of Lift? or How Does the Speed of the vertical motion of the helicopter affect the rate of blade rotation? and what is the Independent variable and the dependent variable

Hello and welcome to Science Buddies,

To respond to your second question, the Science Buddies project guide has a useful discussion of independent and dependent variables in the section "Constructing an Hypotheses":

https://www.sciencebuddies.org/science- ... ience-fair

For your first question, could you explain your question? Are you trying to choose your project title?

Please let us know a bit more about what you are looking for!