Variables & Groups - Scientific Method

In an experiment designed to test the effect of water temperature on the rate that fish eggs hatch, what is the independent variable?

• the rate the fish eggs hatch

• the water temperature

• the type of water

• the type of fish

In an experiment designed to test the effect of water temperature on the rate that fish eggs hatch, what is the dependent variable?

• the rate the fish eggs hatch

• the water temperature

• the type of water

• the type of fish

In an experiment designed to test the effect of an acidic pH on the regeneration of a worm, what is the independent variable?

• worms

• the regeneration of the worms

• the acidic pH

• regular water

In an experiment designed to test the effect of light intensity on the growth rate of plants, what is the independent variable?

• the growth rate of the plants

• the light intensity

• the type of plant

• the soil type

In an experiment designed to test the effect of fertilizer type on the yield of crops, what is the dependent variable?

• the type of fertilizer

• the yield of the crops

• the type of crop

• the watering schedule

In an experiment designed to test the effect of soil pH on the flowering time of plants, what is the dependent variable?

• the soil pH

• the flowering time of the plants

• the type of plant

• the amount of sunlight

In an experiment designed to test the effect of light color on the growth rate of algae, what is the dependent variable?

• the light color

• the growth rate of the algae

• the type of algae

• the water temperature

In an experiment designed to test the effect of sound frequency on the behavior of birds, what is the dependent variable?

• the sound frequency

• the behavior of the birds

• the type of birds

• the time of day

In an experiment designed to test the effect of temperature on the solubility of a salt, what is the dependent variable?

• the temperature

• the solubility of the salt

• the type of salt

• the volume of water

In an experiment designed to test the effect of exercise on the heart rate of adults, what is the independent variable?

• the heart rate of the adults

• the type of exercise

• the age of the adults

• the duration of the exercise