A transmission electron microscope would be the best microscope choice to study _______.
What is 0.25 kilometers expressed in centimeters?
Scientists use critical thinking skills throughout the process of research or experimentation. A student notices that their energy level always seems to decrease when they drink soda, but they seem to have more energy when they don’t drink soda. The student decides to conduct an experiment to determine if their soda intake really does have an effect on their energy level. What critical thinking step has the student just completed in the situation described above?
Following proper safety guidelines _______.
Which of the following is not one of the three principles from which the metric system is based?
When conducting scientific research or experimentation, researchers carefully analyze and evaluate results to determine a valid conclusion. A scientist conducts an experiment to determine how different brands of fish food affect tropical fish growth. The scientist determines that all of their fish grow better when fed a specific brand of fish food. Why would it be important to question the results of this experiment?
Which of the following types of models is most likely to be used to predict earthquakes?
A dependent variable is
Scientific theories are subject to change.
Models need to be changed when _______.
Which of the following is not used to perform experiments with liquids?
Safety equipment like fire extinguishers and fire blankets are used to prevent accidents.
Which of the following is an observation and not an inference?
What is the difference between the question and hypothesis steps in scientific inquiry?
The main purpose of models is to gain a better understanding of the world.
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