Collecting Data OGT Practice… Question 1 A. B. C. D. A chemist is doing an experiment to see how the volume of a certain liquid changed after undergoing a chemical reaction. Which of the following instruments would be most useful for the experiment? Graduated cylinder Test tube Beaker Balance Question 2 A. B. C. D. A scientist is doing an experiment to see how oxidation affects the mass of iron based metals. Which of the following instruments would best help the scientist determine the results of his study? Balance Burette Anemometer Barometer Question 3 A. B. C. D. A scientist is studying the effects of a new drug on the bone cortical thickness of osteoporosis patients. Which unit of measurement is the most appropriate to measure the thickness of the cortical bone? Grams Inches Millimeters Meters Question 4 A. B. C. D. Which of the following types of data organizers is best able to give a quick view of the relationship among parts of a data set to the whole data set? Bar graphs Circle graphs Tables Histograms Question 5 A. B. C. D. Which of the following types of data organizers is best used to show the relationship between two quantities as those quantities are changing? Line graphs Circle graphs Histograms Bar graphs Question 6 A. B. C. D. It is important to share data from scientific experiments with others. Which of the following methods is a valid way to present collected data? There is no need to present scientific data Record the data in a private lab journal Give a speech about the data if the data supports the original hypothesis Publish the data in an academic journal Question 7 Year 2001 2002 2003 2004 Examine the table below. If the trend in the below table continues in the future, what do you think will happen? DVD’s Sold vs. VHS Tapes Sold DVD’s Sold (in millions) 49 55 56 60 VHS Tapes Sold (in millions) 63 42 20 13 Year DVD’s Sold (in millions) VHS Tapes Sold (in millions) 2001 2002 2003 2004 49 55 56 60 63 42 20 13 A. VHS tapes will eventually not be sold anymore B. The sale of VHS tapes will pickup C. The sales of DVD’s will go down D. Manufacturers will stop producing DVD’s Question 8 Examine the line graph below…if the population of Centerville continues to increase at the same rate, what will the population be in the year 2010? A. 6,500 people B. 8,000 people C. 9,500 people D. 16,000 people Question 9 Examine the histogram below. Most adult sparrows have a wing span falling into which of the following ranges? Span in Centimeters 13-15 16-18 Number of Birds 20 80 19-21 22-24 25-27 28-30 470 320 100 10 Span in Centimeters 13-15 16-18 Number of Birds 20 80 19-21 22-24 25-27 28-30 470 320 100 10 A. 13 – 18 cm B. 25 – 30 cm C. 22 – 27 cm D. 19 – 24 cm Question 10 A. B. C. D. Which of the following recent technological advancements have helped improve communication? Semaphore Email Telegraph The bullhorn Question 11 A. B. C. D. A typical human can clearly see an item as small as 0.5 mm across. Which form of technology has enabled humans to see objects even smaller than this? A microscope A telescope Bifocal lenses Scale models Question 12 A. B. C. D. Food safety is very important to modern society. Food borne bacteria, such as E. Coli, can be very dangerous, if not deadly. Which of the following technologies is the most effective at fighting food borne bacteria? Bio-fuels Integrated pest management Irradiation Plastic packaging Question 13 A. B. C. D. Scientists often work together, but in certain situations, scientists compete with each other. What could be an advantage of competition in science? Competition causes scientists to be punished if they do not reach their goals Competition can increase the pace of scientific advancement Competition keeps scientists from sharing knowledge with others Competition allows the public to know which scientist is the smartest Question 14 Examine the scientific method flow chart below. What should you do before you form a hypothesis? A. Test a hypothesis c. Ask a question B. Communicate the results D. Study the results Question 15 Ted would like to enter the local science fair, but he cannot think of a good hypothesis to test. Which of the following suggestions is the best place for Ted to start in order to form a testable hypothesis? A. Ted should find a control group for his experiment B. Ted should design an experiment and then find a hypothesis that the experiment will test C. Ted should make observations about the natural world D. Ted should collect data for his experiment and see what sort of hypothesis might fit the data Question 16 A. B. C. D. A researcher would like to find out whether gamma radiation or beta radiation would penetrate a concrete wall more rapidly. Which of the following statements would be best suited as a hypothesis the researcher could test? Will gamma radiation or beta radiation penetrate a concrete wall in 20 seconds or less Gamma radiation will penetrate a concrete wall more quickly than beta radiation Beta radiation travels faster than gamma radiation Both beta radiation and gamma radiation can penetrate a concrete wall Question 17 A biologist has hypothesized that a certain species of bacteria reproduces most rapidly in an environment where the temperature is 25oC. When the biologist designs her experiment, what should be the manipulated variable of the experiment A. Amount of light C. Petri Dish Size B. Temperature D. Type of baceteria