Understanding Independent and Dependent Variables Quiz

In a science experiment, the amount of water given to plants is varied to see its effect on plant growth. What is the independent variable?

• The amount of water

• The growth of the plants

• The type of plants

• The amount of sunlight

• 3

• 5

In a study to determine how the number of hours spent studying affects test scores, what is the dependent variable?

• The number of hours spent studying

• The test scores

• The subject of the test

• The location of studying

• 2

• -7

In a bakery, the cost of a cake depends on the weight of the cake. What is the independent variable?

• The cost of the cake

• The weight of the cake

• The flavor of the cake

• The decoration on the cake

A farmer is testing the effect of different fertilizers on crop yield. What is the independent variable?

• The type of fertilizer

• The crop yield

• The type of crop

• The amount of water

• 5

• 9

In a car's fuel efficiency test, where the distance traveled depends on the amount of fuel used, what is the dependent variable?

• The type of car

• The distance traveled

• The amount of fuel used

• The speed of the car

When analyzing the effect of study time on the number of questions answered correctly in a quiz, what is the independent variable?

• The number of questions answered correctly

• The study time

• The difficulty of the questions

• The length of the quiz