Practice Quiz

NAEP Science Grade 12 - Question List

Select how would you like to study

Study Mode Free Daily Question Test Mode
126.
A student is doing an experiment to determine how change in acidity affects enzyme activity. The time it takes for a disk soaked with catalase at different acidities to rise to the top of a vial containing 1% hydrogen peroxide will be measured. If the student presents the findings in a line graph, which of the following conditions will be represented on the x-axis of the graph?
  1. pH values
  2. Catalase concentrations.
  3. Disk rise times.
  4. Percent hydrogen peroxide.
See answer
127.
A group of 14 students is monitoring the acidity level in a nearby stream over a period of two weeks. At the same time every day, a student will take one of four available digital pH meters to measure the pH of the stream, and record the result in a laboratory notebook. Which of the following factors represents a systematic error associated with the design of the experiment?
  1. The rounding of the pH readings in the digital displays.
  2. The measurements being made by different students.
  3. The use by the students of four different pH meters.
  4. The sampling being done at the same time every day.
See answer
128.
A study is being conducted to determine whether there is a causal link between a recently built chemical factory and the health of people in the surrounding area. Which of the following types of information would most strongly suggest that there is a causal relationship?
  1. Visible air pollution in nearby neighborhoods.
  2. Historical links between chemical manufacturing and human health issues.
  3. Opinions of people living near the chemical plant.
  4. Increases in the number of patients being treated for asthma in nearby medical facilities.
See answer
129.
A laboratory investigation requires students to dispense 5 mL of a 1 molar sodium chloride solution. Which of the following pieces of laboratory glassware should the students use to achieve the most precise measurement?
  1. 5 mL graduated beaker.
  2. 10 mL graduated cylinder.
  3. 15 mL graduated conical flask.
  4. 20 mL graduated test tube.
See answer
130.
An excess of a chemical measured out for use in a laboratory experiment should be:
  1. Returned to the original stock.
  2. Reported on a Material Safety Data Sheet form.
  3. Disposed of according to state guidelines.
  4. Labeled and set aside for use in the future.
See answer

Select how would you like to study

Study Mode Free Daily Question Test Mode