Scientific Method and Identifying Variables

1. You spilled chocolate on your new clothes. You want to know which of the following detergents remove chocolate stains best. You think that Ariel will do the best job in removing chocolate stains. You compared it with other brands to test your hypothesis. You used Ariel, Tide, and Surf then washed the clothes for 20 mins using lukewarm water. Identify the steps in scientific method.

You think that Ariel will do the best job in removing chocolate stains.

You spilled chocolate on your new clothes.

You used Ariel, Tide, and Surf then washed the clothes for 20 mins using lukewarm water.

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2. You want to prove that tree leaves lower the air temperature under the tree because of the shade. You stand under the tree and hold out an air thermometer under the shade for a few minutes and record the air temperature. Then you move to an area where there are no trees and record the temperature. Your record showed that temperature increases when there is no shade. You concluded that your hypothesis is correct. Match the following steps in scientific method

You stand under the tree and hold out an air thermometer under the shade for a few minutes and record the air temperature. Then you move to an area where there are no trees and record the temperature.

You concluded that your hypothesis is correct

You want to prove that tree leaves lower the air temperature under the tree because of the shade.

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3. You spilled chocolate on your new clothes. You want to know which of the following detergents remove chocolate stains best. You used Ariel, Tide and Surf then washed the clothes for 20 mins using lukewarm water. Which of the following is the Dependent Variable? Check all that applies.

Amount of stain left after washing

Time of Washing

Temperature of Water

Tide

The dependent variable in this experiment is the amount of stain left after washing. This is because the purpose of the experiment is to determine which detergent removes chocolate stains best, and the amount of stain left after washing is the measure of effectiveness for each detergent. The other options - time of washing, temperature of water, and Tide - are all independent variables that can be manipulated in the experiment.

Explanation

The dependent variable in this experiment is the amount of stain left after washing. This is because the purpose of the experiment is to determine which detergent removes chocolate stains best, and the amount of stain left after washing is the measure of effectiveness for each detergent. The other options - time of washing, temperature of water, and Tide - are all independent variables that can be manipulated in the experiment.

4. You spilled chocolate on your new clothes. You want to know which of the following detergents remove chocolate stains best. You used Ariel, Tide, and Surf then washed the clothes for 20 mins using lukewarm water. Which of the following is the Controlled Variable? Check all that applies.

Amount of stain left after washing

Time of washing

Temperature of water

Tide

The controlled variables in this experiment are the time of washing and the temperature of water. These variables are controlled by the experimenter and kept constant throughout the experiment. By washing the clothes for 20 minutes and using lukewarm water, the experimenter ensures that these variables do not influence the results. The amount of stain left after washing is the dependent variable, as it is the outcome that is being measured and compared between the different detergents. Tide is not a controlled variable but rather one of the detergents being tested.

Explanation

The controlled variables in this experiment are the time of washing and the temperature of water. These variables are controlled by the experimenter and kept constant throughout the experiment. By washing the clothes for 20 minutes and using lukewarm water, the experimenter ensures that these variables do not influence the results. The amount of stain left after washing is the dependent variable, as it is the outcome that is being measured and compared between the different detergents. Tide is not a controlled variable but rather one of the detergents being tested.

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5. You spilled chocolate on your new clothes. You want to know which of the following detergents remove chocolate stains best. You used Ariel, Tide, and Surf then washed the clothes for 20 mins using lukewarm water. Which of the following is the Independent Variable? Check all that applies.

Chocolate

Surf

Tide

Ariel

The independent variable in this experiment is the type of detergent used - Surf, Tide, and Ariel. The experiment is testing which detergent removes chocolate stains best, so the researcher is manipulating the independent variable by using different detergents. The dependent variable would be the effectiveness of stain removal, which is not mentioned in the question.

Explanation

The independent variable in this experiment is the type of detergent used - Surf, Tide, and Ariel. The experiment is testing which detergent removes chocolate stains best, so the researcher is manipulating the independent variable by using different detergents. The dependent variable would be the effectiveness of stain removal, which is not mentioned in the question.

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6. You want to prove that tree leaves lower the air temperature under the tree because of the shade. You stand under the tree and hold out an air thermometer under the shade for a few minutes, then you record the air temperature. Afterwards, you move to an area where there are no trees and record the temperature. Match the following variables.

Your position (area under the tree, area with no tree)

Type of thermometer

Temperature

Submit

Scientific Method And Identifying Variables