Critical Thinking in Science — Unit test Answers

A dependent variable is

Which of the following is an observation and not an inference?

Which of the following is not one of the three principles from which the metric system is based?

A transmission electron microscope would be the best microscope choice to study _______.

An individual who interprets laws related to the environment most likely works in which field?

Which of the following is the SI unit used to measure length?

Following proper safety guidelines _______.

Which of the following types of models is most likely to be used to predict earthquakes?

Models need to be changed when _______.

What is 0.25 kilometers expressed in centimeters?

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 is not used to perform experiments with liquids?

There is no simple way to determine whether a website has an editorial process to evaluate the factual accuracy of the information presented.

The main purpose of models is to gain a better understanding of the world.

Environmental engineers minimize the impact of land development on the environment.

Safety equipment like fire extinguishers and fire blankets are used to prevent accidents.

What is the difference between the question and hypothesis steps in scientific inquiry?

Environmental scientists are unconcerned with methods to preserve natural resources.

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?

How many significant figures are in the measurement 0.020 km?