SCIENCE
What does it mean for a scientific investigation to be replicable?
A. It is completed quickly.
B. It can be repeated by others with similar results.
C. It uses expensive equipment.
D. It has only one trial
B. It can be repeated by others with similar results.
Which would make replication difficult?
A. Clear procedures
B. Detailed data tables
C. Missing steps in the procedure
D. Controlled variable
C. Missing steps in the procedure
Which statement contains quantitative data?
A. The juice tastes sour.
B. The bird has colorful feathers.
C. The classroom contains 24 students.
D. The fabric feels soft.
C. The classroom contains 24 students.
Replicable investigations help scientific knowledge because they:
A. Reduce the need for evidence
B. Allow findings to be checked by others
C. Eliminate mistakes completely
D. Prevent new discoveries
B. Allow findings to be checked by others
Which statement about scientific theories is TRUE?
A. They are unproven guesses.
B. They are supported by a large amount of evidence.
C. They become laws when proven.
D. They never change.
B. They are supported by a large amount of evidence.
Why do scientists repeat investigations?
A. To waste time
B. To make experiments longer
C. To check the reliability of results
D. To change the hypothesis
C. To check the reliability of results
A scientist records every step of an investigation. Why?
A. To make the report longer
B. To allow others to replicate the investigation
C. To impress other scientists
D. To avoid collecting data
B. To allow others to replicate the investigation
Scientists are more likely to trust results that:
A. Come from one trial only
B. Cannot be repeated
C. Have been successfully replicated
D. Use fewer measurements
C. Have been successfully replicated
Which would NOT support replication?
A. Recording observations carefully
B. Writing detailed procedures
C. Keeping methods secret
D. Reporting measurements accurately
C. Keeping methods secret
Which statement about scientific laws is TRUE?
A. Laws explain why phenomena occur.
B. Laws describe patterns in nature.
C. Laws become theories over time.
D. Laws are guesses.
B. Laws describe patterns in nature.
If another scientist follows the same procedures and gets similar results, the investigation is:
A. Replicable
B. Unfair
C. Biased
D. Controlled
A. Replicable
Which of the following is a benefit of replication?
A. More reliable findings
B. Fewer observations
C. Less data collection
D. Faster conclusions
A. More reliable findings
Which part of an investigation is most important for replication?
A. The title
B. The procedures
C. The date
D. The scientist's name
B. The procedures
Scientists repeat trials during an experiment to:
A. Increase reliability
B. Avoid collecting data
C. Change variables
D. Skip observations
A. Increase reliability
What is the main difference between a scientific theory and a scientific law?
A. Theories describe; laws explain.
B. Theories explain; laws describe.
C. Laws are stronger than theories.
D. Theories are opinions.
B. Theories explain; laws describe.
Which situation best demonstrates replication?
A. One student performs an experiment once.
B. Different scientists repeat the same investigation.
C. Students guess the results.
D. A scientist changes procedures halfway through.
B. Different scientists repeat the same investigation.
If repeated investigations produce different results, scientists should:
A. Ignore the data
B. Investigate possible errors and collect more evidence
C. Stop studying the topic
D. Change the results
B. Investigate possible errors and collect more evidence
What happens when several scientists replicate an investigation and obtain similar results?
A. Confidence in the findings increases.
B. The investigation becomes invalid.
C. Data must be discarded.
D. Variables are removed.
A. Confidence in the findings increases.
Which observation is qualitative?
A. The plant grew 12 cm.
B. The liquid is blue.
C. The temperature is 25°C.
D. The rock weighs 50 g.
B. The liquid is blue.
Which is an example of a scientific theory?
A. Cell Theory
B. Law of Gravity
C. Speed Limit Law
D. School Rules
A. Cell Theory
Why is replication important in science?
A. It proves scientists never make mistakes.
B. It increases confidence in results.
C. It guarantees correct results.
D. It eliminates hypotheses.
B. It increases confidence in results.
Which statement about replication is TRUE?
A. Only the original scientist can repeat the experiment.
B. Replication helps verify results.
C. Replication changes the hypothesis automatically.
D. Replication is unnecessary if results look correct.
B. Replication helps verify results.
Which scientist is most likely to produce replicable work?
A. One who skips data collection
B. One who keeps detailed records
C. One who changes procedures often
D. One who shares no information
B. One who keeps detailed records
Which observation is quantitative?
A. The flower smells sweet.
B. The metal is shiny.
C. The caterpillar is green.
D. The insect has 6 legs.
D. The insect has 6 legs.
Which best describes a scientific law?
A. Explains how cells work
B. Explains evolution
C. Describes a consistent relationship in nature
D. Is an educated guess
C. Describes a consistent relationship in nature