Is sunlight a dependent variable?

Is sunlight a dependent variable?

Plant height is the dependent variable that responds to the change in the independent variable. Each plant is exposed to an equal amount of sunlight, so sunlight is the control variable. They are also grown in the same sized pot and given an equal amount of water.

What is the dependent variable when dissolving salt and sugar?

Over 1000 FREE Science Fair Project Ideas! 1. For this experiment, the independent variable is the temperature of the solvent (water) and the type of substance used – sugar, salt and sodium bicarbonate. The dependent variable is the amount of substance dissolved in the water.

Is Salt an independent variable?

Independent variables include type of salt (i.e. rock salt, table salt) and amount of salt (i.e. no salt, 1/2 tsp., 1 tsp., 1 tbls.). Time (in seconds) for ice to melt was used as the dependent variable.

Will an egg float in water with more salt independent variable?

Constant Variables: amount of water, egg d. Independent Variable: amount of salt e. An egg will float more easily in salt water than fresh water. The more salt, the higher it floats.

How many times should an experiment be repeated to make sure the results are valid?

Three repeats is usually a good starting place for evaluating the spread of the data. Repeating experiments is standard scientific practice for most fields. The exceptions are usually when the scale and cost of the experiments make it impossible.

What is the independent variable of Will an egg float higher in water with more salt?

You don’t really change the volume of the water by adding salt. By adding enough salt, you increase the density of the water so that it is higher than the density of the egg and the egg will float!

What will happen to the egg in the glass of water if you add salt on it?

Adding salt to the water increases the density of the solution because the salt increases the mass without changing the volume very much. When enough salt is added to the water, the saltwater solution’s density becomes higher than the egg’s, so the egg will then float!