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SI Units / Tools
More SI Units / Tools
Experimental Design
Technology and Engineering
Vocabulary
100
This tool is used to measure the acidity or basicity of liquids.
What is litmus paper (or pH indicator).
100
This is the tool to measure the volume of irregularly shaped objects.
What is a graduated cylinder.
100
These are the steps of the scientific method.
What are question, hypothesis, test, analyze, conclusion, and communication
100
In the ask phase of the EDP, you first identify a need. Before brainstorming possible solutions, you will need to do this. (Hint: before we planned our paper bridges, we viewed pictures of famous bridges.)
What is conduct research.
100
This is an educated guess. It is measurable, testable, and phrased as an "If, then" statement.
What is a hypothesis.
200
This tool would be appropriate to measure the volume of a regularly shaped object like a box or cube.
What is a ruler or meter stick. (Length x Width x Height = Volume)
200
This is the appropriate SI unit to measure length.
What is meter.
200
This is the number of independent variables that can be tested at one time in a well designed experiment.
What is only one.
200
When you re-engineer a product to improve it, you have to weigh that against any negative effect the improvement might have. For instance, people want their cell phones to last longer between charges, but the better battery would make the phone cost more. Engineers have to decide if that is worth it or not. Evaluating and deciding is called this.
What is cost-benefit analysis.
200
This is information gathered in an experiment. It has numbers and units of measure.
What is data.
300
This tool measures force or weight in Newtons.
What is a spring scale.
300
Between measurements, we always do this to our digital scale.
What is press the zero button to recalibrate it.
300
These are three characteristics of a properly written hypothesis.
What are testable, measurable, and phrased as an "If, then" statement.
300
Pretend you are an engineer. You have just tested your prototype and found it to be pretty good. It worked fairly well, but you noted some minor flaws. This would be your next logical step if you were following the EDP.
What is improve the prototype and retest it.
300
This is something that grows out of a hypothesis that has been shown to be true many times, and has never been disproven.
What is a theory
400
The volume SI unit for a liquid is an mL. This volume SI unit is the same amount of volume as an mL, but is used to measure volume of small solids.
What is cubic centimeter.
400
This is the appropriate SI unit to measure volume.
What is cubic meter.
400
This is the difference in the experimental group and control group.
What is the control group is not exposed to the experimental independent variable, while the experimental group is.
400
In the American West, huge windmills are commonly used to produce electricity. At night, bats and owls accidentally fly into the rotors and are killed. Identify the intended benefit and unintended consequence of windmill technology.
What is IB is power production, while the UC is death of flying animals.
400
This term refers to the use of all senses to gather information in a scientific investigation.
What is observation.
500
This SI unit would be appropriate to measure the density of a golf ball.
What is gram per cubic centimeter.
500
Besides a digital scale, this tool is appropriate for measuring the mass of an object.
What is a triple beam balance.
500
Suzie Scientist did an experiment to test the effect of x-ray radiation on the growth of pea plants. She exposed one group of plants to x-rays and another she did not. After a month, she measured the height of the plants. The dependent variable in this experiment was this.
What is plant height.
500
These are the steps in the Engineering Design Process.
What are ask, imagine, plan, create, and improve.
500
This term refers to the creation of technology using living things or creating technology for living things.
What is bioengineering.