Hypothesis and Variables Seatwork

In the scientific problem: "What is the effect of the amount of fertilizers used to the growth rate of corn plants?"

What is the independent variable?

• growth rate of corn plants

• amount of fertilizers

• type of soil

• amount of water

In the scientific problem: "What is the effect of the amount of fertilizers used to the growth rate of corn plants?"

What is the dependent variable?

• growth rate of corn plants

• amount of fertilizers

• type of soil

• amount of water

In the scientific problem: "What is the effect of the amount of fertilizers used to the growth rate of corn plants?"

Which of the following could not be a possible hypothesis?

• If you increase the amount of fertilizers, then the growth rate of corn plants will be faster.

• If you increase the growth rate of corn plants, then the amount of fertilizers will also increase.

• If you decrease the amount of fertilizers, then the growth rate of corn plants will be slower.

In the scientific problem: "Will plants grow red leaves if placed under a red light source?"

Which of the following is the independent variable?

• color of leaves

• type of plant

• color of light source

• amount of light source

In the scientific problem: "Will plants grow red leaves if placed under a red light source?"

Which of the following is the dependent variable?

• color of leaves

• type of plant

• color of light source

• amount of light source

In the scientific problem: "Will plants grow red leaves if placed under a red light source?"

Which of the following are the controlled variables? (Choose 2 responses.)

• color of leaves

• type of plant

• color of light source

• amount of light source

In the scientific problem: "What is the effect of increasing the amount of rice intake per day to the weight of a grade 7 student?"

Which of the following is the independent variable?

• weight of the grade 7 student

• type of rice

• gender of the grade 7 student

• amount of rice intake

In the scientific problem: "What is the effect of increasing the amount of rice intake per day to the weight of a grade 7 student?"

Which of the following is the dependent variable?

• weight of the grade 7 student

• type of rice

• gender of the grade 7 student

• amount of rice intake

In the scientific problem: "What is the effect of increasing the amount of rice intake per day to the weight of a grade 7 student?"

Which of the following could be a possible hypothesis?

• If you increase the amount of vitamins intake, then the height of the grade 7 student might increase.

• If you decrease the amount of rice intake per day of the grade 7 student, then his weight will also decrease.

• If you increase the weight of a grade 7 student, then its height may decrease.

In the scientific problem: "How does the type of weather affect the productiveness of a person?"

Which of the following is the independent variable?

• type of weather

• productiveness of a person

• location

• gender of a person