Variables Worksheet

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 1. Katiana wanted to figure out what type of liquid worked best for growing beans. She watered one with coca-cola, one with lemonade, and one with just water. After one week, she measured how high they had grown.

• Type of liquid used (coca-cola, lemonade, water)

• Amount of sunlight each plant received

• Type of bean used in the experiment

• Size of the pots used for planting

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 1. Katiana wanted to figure out what type of liquid worked best for growing beans. She watered one with coca-cola, one with lemonade, and one with just water. After one week, she measured how high they had grown.

• Height of the beans grown

• Type of liquid used to water the beans

• Amount of sunlight the beans received

• Type of bean planted

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 1. Katiana wanted to figure out what type of liquid worked best for growing beans. She watered one with coca-cola, one with lemonade, and one with just water. After one week, she measured how high they had grown.

• Bean watered with just water

• Bean watered with lemonade

• Bean watered with coca-cola

• Bean watered with milk

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 2. Trevor wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another. a. Independent Variable (IV): ________________________________

• Type of fertilizer used (Miracle Grow, Scotts, none)

• Amount of sunlight each plant receives

• Type of plant used (marigold, rose, tulip)

• Amount of water given to each plant

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 2. Trevor wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another.

• Growth of marigolds

• Type of soil used

• Amount of sunlight received

• Number of marigold seeds planted

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 2. Trevor wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another.

• Marigold with no fertilizer

• Marigold with Miracle Grow

• Marigold with Scotts fertilizer

• Marigold with compost

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 3. Taylor wanted to see if eating apples would help her do better on her classwork. The first day, she didn’t eat any apples. On day 2, she ate one apple; on day 3, she ate 2 apples; and on day 4, she ate 3 apples. Each day, she recorded the grades she got on her science work. a. Independent Variable (IV): ________________________________

• Number of apples eaten

• Grades received on science work

• Type of fruit eaten

• Number of days in the experiment

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 3. Taylor wanted to see if eating apples would help her do better on her classwork. The first day, she didn’t eat any apples. On day 2, she ate one apple; on day 3, she ate 2 apples; and on day 4, she ate 3 apples. Each day, she recorded the grades she got on her science work. What is the dependent variable (DV) in Taylor's experiment?

• Grades on science work

• Number of apples eaten

• Days of the experiment

• Type of fruit eaten

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 3. Taylor wanted to see if eating apples would help her do better on her classwork. The first day, she didn’t eat any apples. On day 2, she ate one apple; on day 3, she ate 2 apples; and on day 4, she ate 3 apples. Each day, she recorded the grades she got on her science work. c. Control: ________________________________

• Day with no apples eaten

• Day with 1 apple eaten

• Day with 2 apples eaten

• Day with 3 apples eaten

For each experiment, write down the independent variable (IV), dependent variable (DV), and control. For some, identify the constants as well. 4. CJ wanted to see if listening to music would make the basketball players make more baskets. On day one, he didn’t play any music and counted how many baskets they could make in 10 minutes. On day 2, he played rap music and counted the baskets, and on day 3, he played classical music and counted the baskets. What is the independent variable (IV) in this experiment?

• Type of music played (none, rap, classical)

• Number of basketball players

• Amount of time spent playing basketball

• Number of baskets made