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Measurement
Scientific Method
Scientific Method, Part II
Results and Conclusions
Hypotheses
100
The system of measurement used in science
What is the SI or Metric system?
100
A variable in an experiment that does not change.
What is a constant?
100
A natural history page is associated with this part of the scientific method
What is step 1, Make observations?
100
A _________ type of graph is used when the independent variable falls into distinct groups.
What is a bar graph?
100
Two things you must identify before forming a hypothesis
What are the independent and dependent variables?
200
This base unit of the metric system represents one ten-millionth the distance between the north pole and the equator.
What is a meter?
200
In an experiment measuring how water temperature affects fish growth, changing the water temperature represents what variable?
What is the independent variable?
200
You are given some materials to "play" with and make observations. If you were following the scientific method, this is what you would do next.
What is ask a question?
200
The _______ variable is graphed along the x-axis, while the ______________ variable is graphed along the y-axis.
What is the independent and dependent variable?
200
A good hypothesis is ____________, clearly identifies the ____________ and _____________, and is a ___________ of what will happen in the experiment.
What is testable, independent variable, dependent variable, and prediction?
300
In the metric system, the prefix _________ stands for one hundredth, __________ stands for one thousandth, and __________ stands for one thousand.
What is centi, milli, and kilo?
300
This variable is the one that is measured during an experiment.
What is the dependent variable?
300
You finish and experiment, and you have recorded all your data in a lab notebook. This is what you would do next.
What is analyze results and form conclusions?
300
You make a graph predicting the outcome of an experiment testing whether the type of feed a rabbit receives affects its growth. You would put ______ along the x-axis, and _________ along the y-axis.
What is type of feed, and growth (weight in pounds)?
300
Write a good hypothesis using the following variables: Independent--amount of light plant receives Dependent--number of leaves plant grows
What is " If the amount of light a plant receives affects the number of leaves it grows, then the more light the plant receives, the more leaves it will grow."
400
One thousand meters is equal to a __________.
What is a kilometer?
400
This step of the scientific method can help you form a better hypothesis.
What is background research?
400
You attend a conference for the Wildlife Society, where scientists give presentations regarding their research. This part of the scientific method is called _____________.
What is communicating results?
400
You complete an experiment to see if the number of hours of sleep students receive affects their test scores. The resulting graph is a line graph. This is because the independent variable is _______________.
What is continuous (time)?
400
What is the problem with the following hypothesis? " If flour type affects the size in circumference of a cookie, then a cookie baked with wheat flour will be the largest and heaviest."
What is the dependent variables don't match!
500
You measure a distance equal to 40,000 centimeters. This is equal to ____________ millimeters.
What is 400,000 millimeters?
500
The seven steps of the scientific method
What are 1. Make observations, 2. Ask a question, 3. Do background research, 4. Make a hypothesis, 5. Test with an experiment, 6. Analyze data and form conclusions, 7. Communicate results
500
A ___________ group is the group in an experiment in which the independent variable is not present. The purpose of this group is so results can be __________ to a group with the independent variable.
What is "control" and "compared?"
500
You do an experiment to see if car noise affects the number of times a bird calls. After graphing your data, you notice that as the amount of noise (in minutes) goes up, the number of time a bird calls goes down. Your conclusion might be _____________________________.
What is " The purpose of this experiment was to investigate whether car noise affects the number of times a bird calls. The results of the experiment support the hypothesis that car noise does affect the number of times a bird calls. One possible explanation for this is that the bird may have trouble "competing" with the car noise, and so rather than waste its energy singing, it spends that energy on other activities. It's possible this may lead to birds leaving areas with lots of noise, or possibly not breeding as much. More data collection is needed to see if these results can be replicated. Further research could investigate whether different types of sounds have different affects on bird calling."
500
Write a hypothesis for how one's route to school might affect how fast one gets to school.
What is " If the route one takes to school affects how fast he/she gets to school, then taking the shortest route will get one to school the fastest."