Vocab
What is qualitative data?
Data that deals with observations or quality of something
This is the 4th step in the SM
Experiment
Whether paint is oil-based or water-based could determine how long it takes to dry. Liliana found two pieces of the same kind of pine wood and painted one with oil based blue paint and the other with water-based blue paint. Then she timed how long it took for each piece to dry. What is a constant in this?
Same kind of wood or Liliana
Another term for an educated guess is also the 3rd step of SM.
Hypothesis
This is not reliable science. Not based on evidence.
Pseudoscience
This is the meaning of scientific law.
No explanation, just observation of details and descriptions of nature and it does not change.
This describes the information that a scientist gathers during the SM?
Data
Identifying the independent and dependent variables in an experiment will help you better interpret and convey results. What is the difference between the independent and dependent variables in an experiment?
Independent is what is manipulated and Dependent is what is measured.
Kim conducted an investigation and decided to communicate the results to her class. Which of the following should she use to support her conclusions?
Data (charts, graphs, tables etc.)
This data is recorded with numbers.
Quantitative Data
This is a well tested explanation of something we observe in nature and it can change with new evidence
Theory
This is the 6th step of the SM
Draw conclusions
The school physician performed an experiment to investigate the effects of aerobic exercise on high school freshmen. He examined 25 student volunteers and found them to be in good health. He then had the students perform aerobic exercises, such as jogging, swimming, and bicycling. The doctor recorded the students’ pulse rates before each activity, during each activity, and after each activity. Which was the dependent variable in this experiment?
Pulse Rates
Kenji must conduct a scientific investigation for a science project. He knows that scientific investigations involve many steps. Which step should Kenji complete first?
Ask a question or problem
When scientists obtain new information, what happens to an existing scientific theory?
It is revised or changed.
Astrology is an example of pseudoscience. Astrologists use horoscopes that are based upon the positions of planets and stars to make predictions about a person’s life. How is science different than pseudoscience?
List all 7 steps in the SM from beginning to end.
Question, research, hypothesis, experiment, collect/analyze data, conclusions and share.
Emily made four paper helicopters. Each was made out of a different kind of paper. She flew each one several times in the hallway and recorded how long each stayed in the air. What is the DV?
How long each airplane stayed in the air
Make a hypothesis out of this experiment:
Does the design of airplanes affect the distance the plane flies?
IF I design the plan in triangle shape, THEN it will go farther than the others.
This is empirical evidence.
What is the difference between replication and repetition?
Replication is OTHERS repeating, Repetition is YOU repeating.
During several trials, a group of scientists tests the reaction of a new medicine on a strain of bacteria. Which step is the last and also essential for proving the validity of the results?
Communicate results - SHARING IS CARING
Define the DV, IV, Constant and control variables.
DV- being measured
IV - manipulated or changed
Control - used for comparison
Constant - stays the same
Scientific investigations include many different steps. After which step in a scientific method might a scientist use results to reject an existing hypothesis and form a new hypothesis?
Conclusion
Ana has done an experiment to find out whether spider plants grow faster under fluorescent lighting or incandescent lighting. She found that fluorescent lighting made the plants grow one centimeter taller over a period of two months. She gave her notes to Alberto, who did the same experiment with very similar results. Which term describes Alberto’s experiment?
Replication