What are the dependent and independent variables?

Hypothesis: If I continually release LN2 (liquid nitrogen) from a pressurized tin can, and I do this for three separate experiments of 5, 10, and 15 seconds, than I believe that the temperature will decrease because... So my question is, what are my...

Independent Variables, Dependent Variables, Controlled Variables, and Control Group, also can you craft a possible hypothesis for the purpose of the lab (To determine the variable(s) effecting the period of a pendulum and to write a mathematical equation...

My science project is due tuesday. (i know i know i should have done this earlier) Well i really need help with my independent variable as well as my dependent and controlled variables. My project is: Will an ice cube melt faster with salt or sugar....

A company that makes nutritional products is developing a new type of protein drink for athletes. A scientist at the company is studying the pH at which a digestive enzyme breaks down the diff. proteins in the drink. The scientist uses the following...

I had to do an experiment to study muscle fatigue. In my experiment I timed people for one minute for each trial while they clicked clothespins. Then after each trial they had to write down the number of clicks they managed in that one minute. What would...

I have to write a hypothetical experiment for psychology. I'll be researching the effects of punishing and rewarding on learning. I'll have two groups, each with ten dogs. One group will receive a treat for good behavior and nothing for bad, whilst the...

I came up with an independent variable on prices of substitutes such as the price of diesel fuel and substitutes of alternatives such as fuel cells in production. I also have 3 dummy variables which are unusual weather, 2 seasons (winter, summer probably...

Basically the experiment is adding salt to water in 5 cups and just adding water to the other 5 cups. Then finding out does salt increase or decrease the evaporation of water over a 7 day period. What would be the independent and dependent variable(s...

okay, so i don't understand exactly what that means my experiment is using magnets with plants. i have a sheet of magnetic paper under one set of plants and and the other set has nothing. they are both in the same place and receive the same amount of...