Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Heart rate experiment variables

27/03/2021 Client: saad24vbs Deadline: 2 Day

Laboratory 3 The Scientific Method

Objectives

· Understand the steps involved in the scientific method

· Define and identify: independent, dependent and control variables

· Calculate the heartbeat of Daphnia under various experimental conditions

· Analyze the data obtained

· Make conclusions regarding the various variables tested and Daphnia’s heart rate

Background Information

All fields of science have one unifying principle that is a common tie among these diverse scientific disciplines. That unifying theme is the scientific method .

The scientific method is simply an organized, methodical, and structured way of observing and/or investigating a situation in an effort to find information about what is being observed. There are six steps to the scientific method.

1. Identification of the situation to be investigated.

This is vital because no progress can be made towards understanding the situation unless one knows exactly what is being investigated. Let’s consider an example. Suppose that you notice (observe) a list of essential nutrients on the label of a box of plant fertilizer. You wonder how plant growth might be affected if plants are deprived of just one of those essential nutrients. You decide to investigate the effect of the lack of potassium on pepper plants.

2. Obtain information about the situation being investigated.

One of the biggest advantages in problem solving is knowing the background information about what is being investigated. This is why researchers do searches of the scientific literature when writing a paper or conducting research. Accordingly, you would go to the library and read as much as you can about plant nutrition and how potassium affects plant growth.

3. Formulation of a hypothesis.

A hypothesis is a possible explanation of the problem or situation based only on what it is known about it so far. The hypothesis must be testable: an experiment must be designed to test its validity. Another important characteristic of a hypothesis is that it must be falsifiable. This means that the hypothesis must make predictions that could be proven false by experimental results. Your first hypothesis might be, “Plants grown in a medium lacking potassium will show some specific signs of malnutrition.

4. Predict the results.

Assuming your hypothesis is correct, you ought to be able to predict the outcome of a situation where your hypothesis was actually applied to the problem. You might now try to imagine how a pepper plant would look when grown in a potassium-free medium. Perhaps there would be obvious changes in the leaves and/or the stem height.

5. Design and conduct an experiment to test the hypothesis.

An experiment is an investigation conducted under very specific conditions in which all variables are controlled except the one being studied. A variable is an event or condition subject to change. In the potassium study, the lack of potassium is the variable being investigated.

If, at the end of the experiment, the hypothesis should be found to be wrong, then it can be modified, further tested or completely discarded. The scientific method commonly results in a long series of repeated testing and hypothesis modification. A hypothesis can never be proven right unequivocally . With more and more experimental evidence to support it, a hypothesis gradually evolves into becoming more and more valid for the situation or problem. The evolution of a hypothesis is based on conducting experiments, making observations, gathering data, etc., all of which are done to investigate the validity and to challenge the hypothesis under consideration.

The design of experiments to test hypotheses requires considerable thought. The variables must be identified, appropriate measures developed, and influences outside of the experimental variables must be controlled. The independent variable is that which will be varied during the experiment; it is the cause. The dependent variable is the effect; it should change as a result of varying the independent variable. Controlled variables are also identified and are kept constant throughout the experiment. Their influence on the dependent variable is not known, but it is postulated that if kept constant they cannot cause changes in the dependent variable and confuse the interpretation of the experiment. For example, suppose you were growing plants with the intention of studying how the amount of water affects their growth. In that case, the independent variable would be the amount of water provided (the variable that you are purposely changing). The dependent variable could be the length of the stem (that is, what changes as the amount of water is purposely changed), and controlled variables would include the amount and quality of light provided, temperature, minerals provided and so on.

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Smart Accountants
Professor Smith
Assignments Hut
24/7 Assignment Help
Top Class Results
Solution Provider
Writer Writer Name Offer Chat
Smart Accountants

ONLINE

Smart Accountants

Hello, I an ranked top 10 freelancers in academic and contents writing. I can write and updated your personal statement with great quality and free of plagiarism

$157 Chat With Writer
Professor Smith

ONLINE

Professor Smith

I have read your project details. I can do this within your deadline.

$168 Chat With Writer
Assignments Hut

ONLINE

Assignments Hut

Give me a chance, i will do this with my best efforts

$175 Chat With Writer
24/7 Assignment Help

ONLINE

24/7 Assignment Help

I am known as Unrivaled Quality, Written to Standard, providing Plagiarism-free woork, and Always on Time

$84 Chat With Writer
Top Class Results

ONLINE

Top Class Results

I have read your project details. I can do this within your deadline.

$111 Chat With Writer
Solution Provider

ONLINE

Solution Provider

Hello, I an ranked top 10 freelancers in academic and contents writing. I can write and updated your personal statement with great quality and free of plagiarism

$130 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

28.4 km in miles - Mr happy burger elwood closing - Collaborative partnerships with families - Australia 842 form 2021 - How is durable medical equipment dme reimbursed in the hhpps - Rolled or raked mortar - Herrmann brain dominance test - Book review on The Miseducation of the Negro, - Psychologytoday tests psychtests com bin transfer - Give me liberty brief 5th edition pdf free - Ferdinand and isabella primary sources - Gpo box 9984 sydney nsw 2001 - Shaft and hole tolerance - Data that consists of two quantitative variables for each individual - Annotated bibliography on childhood obesity - Week 6 capstone journal - Global marketing warren j keegan pdf - Zero mean unit variance normalization matlab - Simple past tense games - Cooper's ethical decision making model summary - Guess the book emoji - Describe the organizational culture of ez pleeze - Grand lodge of iran in exile - Carry me back home blues saraceno chords - Comprehensive international business plan - Program to evaluate postfix expression - Analyzing pro forma statements xyz company - Two factor theory of emotion - Applications of sinusoidal functions and their derivatives - Acorn australian cybercrime online reporting networkb - Toulouse lautrec post impressionism - Fireeye agent setup wizard ended prematurely - Candy crush level 3144 hints - How are electrons arranged in an atom - Unit 7 discussion - Campbell biology chapter 7 - Linden boulevard multiplex cinemas nobody's fool - Research methods in psychology morling pdf download - Allan kaprow assemblages environments and happenings pdf - Swagger wagon music video toyota - Indian grocery store near purdue university - Essential cell biology test bank - Silver cross strap pads - Project implementation plan template word - Ka kha ga writing - BI-2 - Imperial eastman compression fittings - Arrow health rehab woodend - Colleagues Response - Discussion Board - What are the basic objectives of monetary policy - Toyota business level strategy analysis - Manual handling and lifting techniques - What does gtpal stand for - Middle english pronunciation guide - Walden health assessment final exam - Charter club opulence 800 thread count review - Family tree in french - Compound turning litmus blue - Lady shaw building cuhk - Discussion art film - Intercultural Communication - Csi the lost colony of roanoke answer key - Springfield lakes state school - How many languages does trevor noah speak - Legrand 2 compartment trunking - Critically appraise quantitative research article ( Nursing Research Statistic and evidenced Based Practice - How to install elfa easy glider - What would happen if mitosis were uncontrolled - Theoretical Literature Review on Kubler-Ross Model Theory" on Death and Dying which suggests five different stages of Grief. - Describe the types of entertainment available at dodge city - Which of the following is not a function - Help with assignment - Aruba networks guest access - Mccormack mccance 2010 person centred nursing - Threaded 5 - Https www youtube com watch v ebgb40yh4sy - Super pinoy st albans - How did tchaikovsky raise ballet music to a new level - Correlation between the Real Estate and Stock Markets in China and the United States of America - Celtic word for thin place - Social enviroment - Behind the swoosh nike - A salesperson would most likely use a crm system to - Blood spatter analysis lab - Essay - Legacy of the first blade magistrate or doctor - Word root that means chest - Bolman and deal reframing organizations citation - Week -13 cpm - Avtech room alert 26w environmental monitor - Functional assessment and program development for problem behavior o neill - Cim certificate in professional marketing official module guide - Gas laws pre lab answers - Comment and reply - Capsim simulation analysis report - Who did tilly kill in the dressmaker - Confidence interval for population proportion ti 84 - Microarrays are a very useful tool in genomics because they - 282 woolooware road burraneer