biology

jordan is doing a science fair project on the effect of music on the growth of tomatoes. he has two tomato plants, plant A and B, that he grows in a window and gives the same amount of water. plant A is exposed to classical music using headphones attached to the soil. throughout the growth period, jordan counts the number of tomatoes produced by each plant.
plant: A- 35 tomatoes
plant: B- 55 tomatoes
what is the control group?
what is the independent variable?
what is the dependent variable?
what should jordans conclusion be?
jordan needs to repeat the experiment, but his teacher says that he needs to improve his design. in his second experiment, what should he do differently?

  1. 👍 3
  2. 👎 0
  3. 👁 2,839
  1. Control Group - Plant B
    Independent Variable - Amount of water
    Dependent Variable - Amount of plant growth
    Conclusion - Classical music impedes the process of plant growth
    What should he do differently - Think about this on your own

    Can you add in another independent variable, such as controlled amount of sunlight or controlled amount of potting soil?

    1. 👍 5
    2. 👎 9
  2. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.

    A dependent variable is the response or measure of results.

    Extraneous variables — other than the independent variable — potentially can affect the dependent variable, so they must be controlled. If possible, you try to keep them constant between the experimental and control group.

    The experimental group receives the independent variable.

    The control group is similar to experimental, except it does not receive the independent variable. Extraneous variables are balanced between experimental and control groups.

    Types of experiments

    1. Single blind gives the control group a placebo — a substance that is inert, it has no physical effect. Subjects don't know if they are in experimental or control group to reduce placebo effect, a change in behavior solely due to believing that you are getting the independent variable.

    2. Double blind keeps both subjects and experimenter ignorant of group setup. Distribution of the independent variable and placebo are controlled by third party. This controls for experimenter bias and self-fulfilling prophecy, which means that experimenters with particular expectations are likely to consciously or unconsciously to bias the experiment and influence it to conform to their expectations.

    As an example, suppose you want to find out if fluorides reduce dental cavities. You would find two groups, trying to control the extraneous variables. Extraneous variables are found by surveying previous research in the area. In this case, you would match the groups in terms of previous history of cavities, diet and dental hygiene habits including how and how often they brush their teeth.

    The experimental group would get toothpaste with the independent variable, the fluoride, while the control group would not have the fluoride in their toothpaste. The toothpaste without the fluoride would be the placebo.

    The dependent variable would be the number of cavities after participating in the experiment for a time. The dependent variable indicates the results, but it is not the results. At the end of the experiment, both groups could have no change in cavities or one of the groups could have a greater reduction in cavities. (Of course, if the fluoride increased cavities, you wouldn't want to use it.) All of these varied results would be indicated in terms of the dependent variable.

    If only the subjects do not know who is getting the fluoride, it is a single blind experiment. If both the subjects and experimenter do not know, it is a double blind.

    1. 👍 0
    2. 👎 1
  3. What is the manipulated variable

    1. 👍 1
    2. 👎 0
  4. Independent or manipulated Variable: classical music
    Dependent variable: Number of tomatoes that grow
    Controlled Variable: water and sunlight

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. English

    Rewrite the following paragraph so that all of the sentences are in the active voice. This year, the science fair was won by Alex Muros. His project explained why leaves change colors in the fall. Alex was given a prize by the

  2. Computers

    1. What does the term "fair-use exception" mean? (1 point) to use only material that has never been published the ability to use material made by others for educational purposes an exception to copyright restrictions for images

  3. 3 questions~~~

    1. What does the term "fair-use exception" mean? (1 point) to use only material that has never been published the ability to use material made by others for educational purposes an exception to copyright restrictions for images

  4. History

    How are the governments of Jordan and Kuwait different from the governments of the United Arab Emirates and Oman? A. Citizens of Jordan and Kuwait can vote. B. Jordan and Kuwait have monarchs. C. The king of Jordan and emir of

  1. Science

    Jordan is doing a science fair project on the effects of music and growth of tomatoes.he has two tomato plants, plant A and plant B that he grows in a window and gives the same amount of water. Plant A is exposed to classical

  2. country report

    Waht kind of music do they listen to in Thailand? I'm doing a project about Thailand and as an idea, I thought of either playing traditional music or bringing in Thai food. I'm not sure where to find Thai music (or info about

  3. History

    How are the governments of Jordan in Kuwait different from the government of the united Arab emirates and omen? A. Citizens of Jordan and Kuwait can vote B. Jordan and Kuwait have monarchs C. The king of Jordan and Emir of Kuwait

  4. Science Fair Project

    Is this Science Fair Project that I am doing a 9th or 11th grade project.... Up,Up, and Away in your own Hot-air ballon !Search up this Project and then tell me!

  1. science

    i need help on my science project i have a science fair on march somethin please give me any ideas possible u know plz thanks. (0.o)

  2. Science Fair Question

    •Decide which type of project you’re doing. Projects can be entered as one of two types: (1) Science / Technology, or (2) Inventions •Decide which category your project fits in. Click here for a list of the categories.

  3. Science

    I have to do a project with a science related career (that doesn't necessarily mean a scientist, but someone who uses science frequently). What do you call a scientist who studies the science of music? I've google this but I

  4. science fair

    I need to do a project for the science fair but I don't know what to do. My science teacher says it has to be like the water dancing on a penny, everything has to be the same but you have to change one thing. What can I do??????

You can view more similar questions or ask a new question.