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Scientific Method
The scientific method is the basis of scientific investigation. A scientist will pose a question and formulate a hypothesis as a potential explanation or answer to the question. The hypothesis will be tested through a series of experiments. The results of the experiments will either prove or disprove the hypothesis. This category should contain questions and answers regarding the scientific method.
4,392 Questions
What are the stages in an experiment?
The basis steps of an experiment are :
- Defining the phenomenon
- Forming a hypothesis
- Designing an experiment
- Performing and Observing the experiment
- Analyzing the data
- Stating and Publishing the Conclusions
Another version of the same steps is :
1) General Question
2) Narrowing Down
3) Designing the Experiment
4) Observation
5) Analysis
6) Conclusion
In some experiments, the analysis may determine that no conclusion is possible. The sixth step would be to try to identify possible flaws in the experimental procedure, so that they might be corrected if the experiment is to be repeated.
Is a cross sectional study quantitative or qualitative study?
Cross-sectional study can be either qualitative or quantitative or mix method, Cross-sectional surveys are used to gather information on a population at a single point in time. An example of a cross sectional survey would be a questionaire that collects data on how parents feel about Internet filtering, as of March of 1999. A different cross-sectional survey questionnaire might try to determine the relationship between two factors, like religiousness of parents and views on Internet filtering.
- Takes place at a single point in time
- Does not involve manipulating variables
- Allows researchers to look at numerous things at once (age, income, gender)
- Often used to look at the prevalence of something in a given population.
Hassan Elkatawneh
حسان القطاونهWhat step gives an investigation a specific direction or focus?
A Hypothesis gives an investigation a specific direction or focus.
The questions that have come in the aqua regia-science quiz?
mostly they may ask high level application questions.they also ask based on certain pics.it ranges from identifying the person on the pic to name the scientific principle occurring in the pic.for example they showed a comic of tintin in which he suddenly jumped on the bike and rode it at top speed.behind him the twins were sittting.as the bike started to move both twins fell out.they asked the reason for it.
ans was inertia.
see?
the quiz masters name was Antony.he showed a pic of an atom of an element and asked 2 identify it.the only clue was that it had something to do with his name.
as he had said his name first,no 1 bothered 2 remember it properly .
guess what the answer was?
antimony.
they ask very high standard and extremely different questions.it is a very different pattern . we need to watch tv adds , have basic information about calculations, we need to know about different animals , birds ..................................a very tough job!
Answers for scientific method word search?
analysis
charts
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conclusion
control
data
dependent
equipment
experiments
graphs
hypothesis
problem
process
reliable
safety rules
science
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scientists
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Answers to the scientific method bikini bottom experiments?
Scientific Method Answer Key
Bikini Bottom Experiments
(1) Flower Power
SpongeBob loves to garden and wants to grow lots of pink flowers for his pal Sandy. He bought a
special Flower Power fertilizer to see if will help plants produce more flowers. He plants two plants of
the same size in separate containers with the same amount of potting soil. He places one plant in a sunny
window and waters it every day with fertilized water. He places the other plant on a shelf in a closet and
waters it with plain water every other day.
What did SpongeBob do wrong in this experiment? Explain.
SpongeBob did not provide both plants with the same amount of water and sunshine. In order to test the
fertilizer correctly, both plants should have been placed in the sunny window and watered every day with
the same amount of water. The only difference between the two plants should have been the fertilizer -
one plant would be watered with the water with fertilizer and the other would be watered with plain
water.
(What should SpongeBob do to test the effectiveness of Flower Power fertilizer? Write an experiment.
Answers will vary. Experiments should address the problems in SpongeBob's experiment.
(2) Super Snails
Gary is not the smartest snail in Bikini Bottom and believes he can improve his brain power by
eating Super Snail Snacks. In order to test his hypothesis, he recruits SpongeBob and several snail friends
to help him with the experiment. The snails ate one snack with each meal every day for three weeks.
SpongeBob created a test and gave it to the snails before they started eating the snacks as well as after
three weeks. Analyze the data in the chart and determine whether or not the Super Snail Snacks created
smarter snails!
Based on the data provided, do the Super Snail Snacks work? Explain your answer.
The Super Snail Snacks appear to have worked for Gary and Barry. Both of them increased their test
results after eating the snacks for three weeks. Larry did not show any improvement and Terry scored
lower on his second test. However, it is difficult to determine if the Super Snail Snacks are an effective
way to increase a snail's brain power based on this experiment alone as all the snails ate the snacks (no
control group). The gains shown by Gary and Barry may have been due to the Super Snail Snacks, but
further testing would be needed to make sure the results were not due to other factors.
(3) Bubble Time
Patrick loves bubble gum and would like to be able to blow bigger bubbles than anyone else in
Bikini Bottom. To prepare for the Bikini Bottom Big Bubble Contest, he bought five different brands of
bubble gum and needs your help to find the brand that creates the biggest bubbles. Write an experiment
to test the bubble power of the bubble gum brands and help Patrick win the contest.
Answers will vary. Students should make sure to perform the same test with each brand in order to obtain
reliable results. Repeated trials would generate more data to analyze and help Patrick pick the best
bubble gum brand for the bubble blowing contest.
Extension Idea: Provide an opportunity for the students to try their bubble gum tests!
1 - Patty Power
Which people are in the control group? Group B
What is the independent variable? New sauce
What is the dependent variable? Amount of gas
What should Mr. Krabs' conclusion be? The new sauce appears to work as it reduced the amount of gas
produced in 60% of the people tested.
Why do you think 10 people in group B reported feeling better? They thought they were getting the new sauce as
a result thought that they didn't have as much gas. (Placebo effect)
2 -- Slimotosis
What was the initial observation? Slimotosis on Gary's shell
What is the independent variable? Cures (Seaweed and Dr. Kelp)
What is the dependent variable? Slime and odor
What should Sponge Bob's conclusion be? Although Gary's symptoms have disappeared, it is not known which
cure was the one that worked. He should redo the experiment and include a control group as well as two other
testing groups for each of the proposed cures.
3 -- Marshmallow Muscles
Which person is in the control group? SpongeBob
What is the independent variable? Muscle cream
What is the dependent variable? Amount of marshmallows lifted (strength)
What should Larry's conclusion be? Since both Patrick and SpongeBob improved their results by the end of two
weeks, it does not appear that the claims for the special muscle cream are true. If the claims were correct, we
should have seen Patrick's amount double, but not SpongeBob's amount. The improvements were likely a result
of Larry's special workout.
4 -- Microwave Miracle
What was Patrick's hypothesis? He hypothesized that feeding fish microwaved food would make them become
smarter.
Which fish are in the control group? The fish that eat regular food
What is the independent variable? Microwaved food
What is the dependent variable? Time required to complete the maze
Look at the results in the charts. What should Patrick's conclusion be? According to the data, all but two fish in
each group decreased their time through the maze. The special food does not appear to be a big factor in
helping fish become smarter.
Note: Of the fish that did improve their times, the fish that were fed the special food averaged a 9.625 seconds
decrease in their times compared to an average decrease of 6.625 seconds in the fish group that received the
regular food. This does show a slight improvement for the microwaved food group, but not enough to prove that
his hypothesis was correct. More testing would need to be done
Krusty Krab Breath Mints
1. Which people are in the control group? The people who received the mint without the secret ingredient
(Group B) would be the control group.
2. What is the independent variable? Secret ingredient in the breath mint
3. What is the dependent variable? Amount of breath odor (or bad breath)
4. What should Mr. Krabs' conclusion be? The breath mint with the secret ingredient appears to reduce the
amount of breath odor more than half the time, but it is not 100% effective.
5. Why do you think 10 people in group B reported fresher breath? This may be due to the placebo effect.
Sponge Bob Clean Pants
6. What was the problem? SpongeBob's pants were not clean.
7. What is the independent variable? Laundry soap
8. What is the dependent variable? Amount of dirt left on the pants (or how clean the pants were)
9. What should Sponge Bob's conclusion be? Clean-O laundry soap does not appear to be effective in cleaning
his pants.
Squidward's Symphony
10. What is the independent variable? Instrument
11. What is the dependent variable? Number of jellyfish
12. What should Squidward's conclusion be? The clarinet did seem to attract a large number of jellyfish, but
the average number for the three trials also matched the average for the guitar. The flute attracted the least
number of jellyfish, but the average for this category is still larger than the control. Music seems to attract
jellyfish in greater numbers than when no music is played. Squidward's hypothesis that the clarinet attracts
larger numbers of jellyfish than other instruments is not proven by this experiment alone.
13. Are the results reliable? Based on the limited amount of information provided, it is difficult to tell if
Squidward's results are reliable. The description did not tell how long each break was between trials. Did he
leave enough time for the jellyfish to "clear out" of the area? (NOTE: Accept other potential flaws that
students can support.)
Super Bubbles
14. What did the Super Bubble ads claim? The ads claimed that the Super Bubble solution would produce
bubbles that were twice as large as those made with regular bubble soap.
15. What is the independent variable? Type of bubble solution
16. What is the dependent variable? Size (diameter) of the bubble
17. a. Calculate the average diameter for each. Super Bubble = 15.1 cm Regular Soap = 11.5 cm
b. What should their conclusion be? The Super Bubble solution did not seem to produce bubbles that were
twice as large as those made with the regular soap. Although the average size for the Super Bubble
solution was larger than the average size for the regular soap, it was not "twice as large" as the ads
claimed. In fact, only two of the ten trials had results that would fit the ads claims.
18. Are the results reliable? Why or why not? The description does not say who blew the bubbles for each
solution. There may be differences in bubble sizes due to the person blowing the bubble rather than the bubble
solution. They might have considered having each person blow 5 bubbles with each solution. (NOTE: Accept
other potential flaws that students can support.)
Will a light bulb evaporate water?
If you were to put a bare wire belonging to anything in a glass of water, the electricity flowing through the wire would have no reason to continue to travel through the wire instead of dispersing in the water.
The water offers less resistance, so the electricity flows through that instead of the wire. This is known as creating a short circuit, or a short, for short! With no electricity flowing through the bulb, it will turn off.
In the scientific method a formulation of a hypothesis occurs before the?
Make observations and identify the problem.
How do you forecast using the naive method?
Assumes that demand in the next period is the same as demand inmost recent period; demand pattern may not always be that stable.
For example:
If July sales were 50, then Augusts sales will also be 50Voice dynamics refer to the variations in volume, tone, and intensity of a person's voice while speaking. It can convey emotions, emphasize important points, and engage listeners more effectively in communication. Understanding and controlling voice dynamics can help improve clarity and impact in verbal interactions.
Neglecting air resistance, the force on the coin is constant, whether the coin is moving up, moving down, stopped at its peak, or lying on the ground. The force is the force of gravity attracting the coin to the center of the earth. The force is technically known as the coin's "weight". While the coin is in the air, that's the one and only force acting on it, and its magnitude doesn't change.
Can you make a inference without having made any observation?
Yes, that is what is called a blind guess.
Which action directly helps a plant make new seeds?
The action that directly helps a plant make new seeds is fertilization. Once these seeds have developed they will be dispersed.
Submersion method is one name for a technique of directing the performance of actors pioneered by Stanislavski. Preceding his better known work with method acting, submersion method was used bring truth to performance by having actors relive painful or otherwise potent emotional experiences. The techniques were eventually abandoned by Stanislavski after witnessing detrimental long term effects on the mental and emotional health of his actors. A few students of Stanislavski continued practicing the method but it has long time fallen into a minority of practitioners.
What is the melting point of jelly?
There are hundreds of different glues, with different melting points, setting times and means of adhesion.
What should you do before you formulate a hypothesis?
observation,explanation and formulation or processing of the data.
What is the abbreviation for melting point?
m.p.
According to CAS (Chemical Abstracts Service, a division of American Chemical Society) Standard Abbreviation & Acronym.
What are three main differences between structured observation and participant observation?
participant is qualitative
structured is quantitative
Is range of motion testing subjective or objective?
Active range of motion is that motion performed voluntarily by a patient and is subjective in nature as the patient can move the body part as far or as little as they wish. Passive range of motion, which is that motion of a body part performed by an examiner is objective as the voluntary restriction of the motion is less likely to be influenced by the patient being examined.
A piece of fur is positively charged when?
A piece of fur becomes positively charged when it loses electrons to another object through friction, causing it to have an excess of protons compared to electrons. This imbalance of positive charge results in the fur being positively charged.
