Variables in Experiments

Biology ⇒ Scientific Inquiry and Experimental Design in Biology

Variables in Experiments starts at 6 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Variables in Experiments. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 7

Describe the difference between an independent variable and a dependent variable.

Explain what would happen if you changed more than one variable at a time in an experiment.

Explain why it is important to change only one variable at a time in an experiment.

If you are testing how temperature affects the rate of a chemical reaction, what is the independent variable?

In an experiment to see if fertilizer affects plant height, what is the controlled variable?

In an experiment to test the effect of different amounts of sugar on yeast growth, what is the dependent variable?

In an experiment to test the effect of different types of music on plant growth, what is the independent variable?

In an experiment, what is another name for the independent variable? (1) Manipulated variable (2) Responding variable (3) Controlled variable (4) Constant variable

Which of the following best describes a controlled variable? (1) The variable that is changed (2) The variable that is measured (3) The variable that is kept constant (4) The variable that is ignored

Which of the following best describes the dependent variable? (1) The variable that is changed (2) The variable that is measured (3) The variable that is kept constant (4) The variable that is ignored

Which of the following is an example of a dependent variable? (1) Amount of fertilizer used (2) Height of plants (3) Type of soil (4) Amount of sunlight

Fill in the blank: In a fair test, only the __________ variable should be changed.

Fill in the blank: In an experiment, the variable that is kept the same to ensure a fair test is called the __________ variable.

Fill in the blank: The variable that is deliberately changed in an experiment is called the __________ variable.

Fill in the blank: The variable that is kept constant to ensure a fair test is the __________ variable.

True or False: Changing more than one variable at a time makes it difficult to know which variable caused the results.

True or False: Controlled variables are also called constants.

True or False: The dependent variable depends on the independent variable.

True or False: The dependent variable is the variable that is measured in an experiment.