Safety in Science — Unit test Answers

A small toy manufacturer that builds electronic toys is considering suppliers for a part they call a "gizmo.” They need to purchase 200 gizmos, and they are looking at the price and size of shipments from four suppliers.

Henry plans to monitor the change in concentration of an acid during a chemical reaction. He wants to collect data every 0.1 seconds and then to graph his data and insert it into a text document. Which pair of tools would be best for Henry to use?

What information in the MSDS would be most important to know at the end of an experiment?

What is a criterion for all products made using the process of technological design?

Cornell University recently conducted a study that estimated that honeybees pollinate more than $14 billion worth of crops each year. The study suggested that nearly seventy-five percent of all global crops that are grown for food, fiber, beverages, condiments, spices, and medicines are pollinated. Produced with the help of pollinators, agricultural products including legumes, vegetables, fruits, berries, nuts, herbs, spices, oils, seeds, grains, clover, and cotton make a significant contribution to the economy. As the human population increases, so does the demand for pollination; sadly, the honeybee population is decreasing. Within the past thirty years, parasites, predators, and disease have weakened both wild and managed populations of honeybees. In fact, around the globe, honeybees are being decimated by an epidemic known as colony collapse disorder (CCD). According to this article, who collected information to research the honeybees?

Which practice poses the greatest safety concern?

Long before humans made electronic satellites to orbit the Earth for communications, humans had been observing the moon. Through centuries of thought and experimentation, scientists realized that the invisible force of gravity was holding the moon and other matter in orbit around Earth. Then in the twentieth century, humans began putting their own satellites in orbit.

What statements best define percent error? Check all that apply.It is a mathematical way of showing accuracy.The higher the percent error, the more accurate the data set.The higher the percent error, the less accurate the data set.Only the experimental value is needed to calculate percent error.Only the actual, or accepted, value is needed to calculate percent error.A percent error always has a positive value.

Microscopes are used to study the structures of rocks. Over time, microscopes have become more and more powerful. As a result of this technological improvement, our structural information of rocks

Which tool can be used to determine the volume of a metal bolt?

A _________ is a precise way to represent data, but it does not identify trends in the data.

The MSDS for sodium hydroxide gives it a health rating of 3, a flammability rating of 0, and a reactivity rating of 1. According to the MSDS, which best describes sodium hydroxide?

Which of the following values is equal to 1 micrometer?

Which trait would most likely lead a scientist to investigate a blood-thinning agent in the saliva of vampire bats?