A ______________________ describes things that can be observed with the senses.
A ______________________ describes something using numbers or measurements.
Sort each statement as qualitative or quantitative.
There is 15% less ice this year than last year.
Polar bears hunt for food using the ice as a platform.
Qualitative Observation
Quantitative Observation
The diagram you drew of the aqueous alternator would be an example of a ___________ model.
A chart or graph that organizes data helps visualize trends would be an example of a ___________ model.
A model that changes the scale or recreates a real life system in different materials would be a ____________ model.
Think to the SULTAN check list for graphs. Assuming all points were plotted properly, What is this graph missing? Select all that apply.
Think to the SULTAN check for graphs. Assuming all points were plotted properly, What is this graph missing? Select all that apply.
Think to the SULTAN check for graphs. Assuming all points were plotted properly, What is this graph missing? Select all that apply.
Scientists working for NASA on long term spaceflight missions wanted to see the ideal amount of sunlight necessary for plant growth. They had previously given plants 2 hrs of direct sunlight. They guessed that 3 hours would be better based on prior data. They stated if 3 hrs of direct sunlight is provided to the plants, then the plants will grow better.
They placed trays of plants under timed lights. All were given the same amount of fertilizer, soil, and water.
Group 1 received 2 hrs of sunlight.
Group 2 received 3 hr of light.
Group 3 received 4 hrs of light.
Group 4 received 1.5 hrs of light.
Group 5 received 1 hrs of light.
Results:
After monitoring all the plants for one month, they found:
Group 1 grew an average of 15cm
Group 2 grew an average of 15 cm.
Group 3 grew an average of 17 cm.
Group 4 grew an average of 22 cm.
Group 5 grew an average of 29 cm.
The hypothesis originally proposed was correct.
A scientist decides to test the effect of alcohol consumption on human reaction times. Two groups of individuals are used. Both groups consist of the same number of males and females with ages from 21-45. Both groups of volunteers are fed the same diet.
Group A is given an 8 ounce alcoholic beverage every 30 minutes for 5 hours.
Group B is given an 8 ounce non-alcoholic beverage every 30 minutes for 5 hours.
Both groups are tested on a driving simulator every 30 minutes. Their reaction times are recorded.
The main point of an experiment is to __________________.
How many indepedent variables should be present in a well-designed experiment?
Scientists must have the mindset that _____________________.
Scientific knowledge that is over 200 hundred years old ___________________.
Someone asks asks a scientist, " What is the meaning of life? " . How should the scientist respond? (according the Nature Of Science)
Which areas require scientists to exhibit imagination in addition to logic ?
A scientist ignores data about the toxicity of Chemical A because their father is an owner of the company that produces Chemical A. This is bias because:
This (see story above) is also a violation of the idea that :
We should always be able to question ideas from scientists (even the most prominent and well-respected) because _______________________.
A biotech company builds a device that, allegedly, can read people's blood and find diseases. Many people invest money but begin to demand proof it works before it is used on people. The company denies this claiming the proof is private and a company secret. This does not follow the nature of science because:
Elizabeth notices certian birds visit her bird feeder only certain times of the year. She guessed (based on past experience) that " If birds are not present in her yard in winter, then it is due to their yearly migration." This claim is a ________________.
Scientific laws ______.
A scientific theory ___________.
What is the hypothesis of this experiment?
What is the indepdent variable? (manipulated)
What is the dependent variable?
Which group of plants would serve as the control group for this experiment?
What amount of light helps plants grow best?