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- 1. Multiple ChoiceThis part of the experiment serves as a basis of comparison; the one variable being tested has been omitted.experimental groupcontrol groupdatavariables
- 2. Multiple ChoiceA possible explanation to a problem that has not yet been tested.datatheoryhypothesisfact
- 3. Multiple ChoiceThis variable in an experiment is the one being deliberately changed by the scientist.dependent variableindependent variabledatacontrol group
- 4. Multiple ChoiceWhat step does every scientific experiment begin with?hypothesisquestion/problemproceduresconclusion
- 5. Multiple ChoiceAn experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...The type of plantThe amount of sunlightThe type of musicThe type of liquid
- 6. Multiple ChoiceThe summary at the end of an experiment that explains the results.conclusionproceduresmaterialsresponding variable
- 7. Multiple ChoiceA student wants to test the effects of type of exercise on heart rate. What is the dependent variable?heart ratetype of exerciseamount of exercisetime of day exercise occurs
- 8. Multiple ChoiceObservations made during an experiment are called:dataproblemsconclusionsquestions
- 9. Multiple ChoiceAn experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?Type of plant, amount of music, and sunlightWater, apple juice, milkPlant growth
- 10. Multiple Choice
Which is true about hypothesis?
A. It may reject or accepts your prediction.
B. It is an educated guess or possible answer to the question.
C. It summarizes the result on the experiment.
D. It is the final answer to the question.
- 11. Multiple Choice
All hypothesis are accepted.
TRUE
FALSE
- 12. Multiple Choice
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?Acid has no effect on the health of this type of plant.B. High acidity is helpful to this type of plant.C. Low acidity is harmful to this type of plant.High acidity is harmful to this type of plant. - 13. Multiple ChoiceThe graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graphAtmospheric carbon dioxide levels are responsible for global temperature change.Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.Atmospheric carbon dioxide levels have remained the same over the past century.Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.
- 14. Multiple ChoiceIn order to be accepted, a scientific theory must bewidely tested and supported by extensive databased on the results of a single experimentcontroversial and cause debatein line with all previous historical ideas
- 15. Multiple ChoiceWhich statement best expresses a basic scientific assumption?Interpretation of experimental results has provided explanations for all natural phenomena.If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.For any conclusion to be valid, the design of the experiment requires that only two groups be compared.After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.
- 16. Multiple ChoiceConclusions based on an experiment are most likely to be accepted whenthey are consistent with experimental data and observationsthey are derived from investigations having many experimental variablesscientists agree that only one hypothesis has been testedhypotheses are based on one experimental design
- 17. Multiple ChoiceAn experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. The dependent variable in this experiment is thetype of soda given to each groupamount of soda given to each grouppulse rate of each groupage of participants in each group
- 18. Multiple Choice
What effect does fertilizer have on plant growth? Identify the correct step from the choices below.
ask a question
state the hypothesis
collect the data
draw conclusions
- 19. Multiple Choice
Christopher set up six tanks with equal volumes of 20 ℃ water. Three of the tanks contained water with a high salt content of 30 parts per thousand and three contained water with no salt. Christopher added an equal amount of green algae to each tank. He allowed the algae to grow in the tanks for two weeks. Then, he measured the amount of algae in each tank. Identify the question that Christopher’s experiment can best answer.
Is the growth of algae affected by the temperature?
Do algae grown in water with a high salt content release more oxygen than an equal amount of algae grown in water without salt?
Do algae grow more in water with high salt content than in water without salt?
- 20. Multiple ChoiceWhich type of data involves numbers that are obtained by counting or measuring?quantitativequalitative
- 21. Multiple ChoiceWhich type of data involves descriptions that cannot be counted or measured?qualitativequantitative
- 22. Multiple Choice"The plant is pretty"
This observation is...SubjectiveObjective - 23. Multiple Choice"The coin weighs 2 grams"
This observation is...SubjectiveObjective - 24. Multiple ChoiceWhen experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. The fact that we kept the light, plant, and water the same in each experiment are examples of ____________.an dependent variablean independent variablea controlconstants
- 25. Multiple Choice
Mr. Wells is probably not in school today because his is sick. Is this a Qualitative Observation, Quantitative Observation, or an Inference
Qualitative Observation
Quantitative Observation
Inference
- Answer choicesTagsAnswer choicesTags