Collecting Data OGT Collecting Data OGT Practice…Practice…

Question 1Question 1

A chemist is doing an experiment to see how A chemist is doing an experiment to see how the volume of a certain liquid changed after the volume of a certain liquid changed after undergoing a chemical reaction. Which of the undergoing a chemical reaction. Which of the following instruments would be most useful for following instruments would be most useful for the experiment?the experiment?

A.A. Graduated cylinderGraduated cylinder

B.B. Test tubeTest tube

C.C. BeakerBeaker

D.D. Balance Balance

Question 2Question 2

A scientist is doing an experiment to see A scientist is doing an experiment to see how oxidation affects the mass of iron how oxidation affects the mass of iron based metals. Which of the following based metals. Which of the following instruments would best help the scientist instruments would best help the scientist determine the results of his study?determine the results of his study?

A.A. BalanceBalanceB.B. BuretteBuretteC.C. AnemometerAnemometerD.D. BarometerBarometer

Question 3Question 3

A scientist is studying the effects of a new drug A scientist is studying the effects of a new drug on the bone cortical thickness of osteoporosis on the bone cortical thickness of osteoporosis patients. Which unit of measurement is the patients. Which unit of measurement is the most appropriate to measure the thickness of most appropriate to measure the thickness of the cortical bone?the cortical bone?

A.A. GramsGrams

B.B. InchesInches

C.C. MillimetersMillimeters

D.D. MetersMeters

Question 4Question 4

Which of the following types of data Which of the following types of data organizers is best able to give a quick organizers is best able to give a quick view of the relationship among parts of a view of the relationship among parts of a data set to the whole data set?data set to the whole data set?

A.A. Bar graphsBar graphs

B.B. Circle graphsCircle graphs

C.C. TablesTables

D.D. HistogramsHistograms

Question 5Question 5

Which of the following types of data Which of the following types of data organizers is best used to show the organizers is best used to show the relationship between two quantities as relationship between two quantities as those quantities are changing?those quantities are changing?

A.A. Line graphsLine graphs

B.B. Circle graphsCircle graphs

C.C. HistogramsHistograms

D.D. Bar graphsBar graphs

Question 6Question 6

It is important to share data from scientific It is important to share data from scientific experiments with others. Which of the experiments with others. Which of the following methods is a valid way to present following methods is a valid way to present collected data?collected data?

A.A. There is no need to present scientific dataThere is no need to present scientific data

B.B. Record the data in a private lab journalRecord the data in a private lab journal

C.C. Give a speech about the data if the data Give a speech about the data if the data supports the original hypothesissupports the original hypothesis

D.D. Publish the data in an academic journalPublish the data in an academic journal

Question 7Question 7 Examine the table below. If the trend in the Examine the table below. If the trend in the

below table continues in the future, what do you below table continues in the future, what do you think will happen?think will happen?

DVD’s Sold vs. VHS Tapes SoldDVD’s Sold vs. VHS Tapes Sold

YearYear DVD’s Sold DVD’s Sold

(in millions)(in millions)

VHS Tapes Sold VHS Tapes Sold (in millions)(in millions)

20012001 4949 6363

20022002 5555 4242

20032003 5656 2020

20042004 6060 1313

YearYear DVD’s Sold DVD’s Sold

(in millions)(in millions)

VHS Tapes VHS Tapes Sold (in Sold (in millions)millions)

20012001 4949 6363

20022002 5555 4242

20032003 5656 2020

20042004 6060 1313

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 8Question 8 Examine the line graph below…if the Examine the line graph below…if the

population of Centerville continues to population of Centerville continues to increase at the same rate, what will the increase at the same rate, what will the population be in the year 2010?population be in the year 2010?

A. 6,500 people

B. 8,000 people

C.9,500 people

D.16,000 people

Question 9Question 9 Examine the histogram below. Most adult Examine the histogram below. Most adult

sparrows have a wing span falling into which of sparrows have a wing span falling into which of the following ranges? the following ranges?

Span in CentimetersSpan in Centimeters Number of BirdsNumber of Birds

13-1513-15 2020

16-1816-18 8080

19-2119-21 470470

22-2422-24 320320

25-2725-27 100100

28-3028-30 1010

Span in CentimetersSpan in Centimeters Number of BirdsNumber of Birds

13-1513-15 2020

16-1816-18 8080

19-2119-21 470470

22-2422-24 320320

25-2725-27 100100

28-3028-30 1010

A. 13 – 18 cm

B. 25 – 30 cm

C.22 – 27 cm

D.19 – 24 cm

Question 10Question 10

Which of the following recent Which of the following recent technological advancements have technological advancements have helped improve communication?helped improve communication?

A.A. SemaphoreSemaphore

B.B. EmailEmail

C.C. TelegraphTelegraph

D.D. The bullhornThe bullhorn

Question 11Question 11

A typical human can clearly see an item A typical human can clearly see an item as small as 0.5 mm across. Which form as small as 0.5 mm across. Which form of technology has enabled humans to of technology has enabled humans to see objects even smaller than this?see objects even smaller than this?

A.A. A microscopeA microscope

B.B. A telescopeA telescope

C.C. Bifocal lensesBifocal lenses

D.D. Scale modelsScale models

Question 12Question 12

Food safety is very important to modern Food safety is very important to modern society. Food borne bacteria, such as E. society. Food borne bacteria, such as E. Coli, can be very dangerous, if not Coli, can be very dangerous, if not deadly. Which of the following deadly. Which of the following technologies is the most effective at technologies is the most effective at fighting food borne bacteria?fighting food borne bacteria?

A.A. Bio-fuelsBio-fuelsB.B. Integrated pest managementIntegrated pest managementC.C. IrradiationIrradiationD.D. Plastic packagingPlastic packaging

Question 13Question 13

Scientists often work together, but in certain Scientists often work together, but in certain situations, scientists compete with each other. situations, scientists compete with each other. What could be an advantage of competition in What could be an advantage of competition in science?science?

A.A. Competition causes scientists to be punished if Competition causes scientists to be punished if they do not reach their goalsthey do not reach their goals

B.B. Competition can increase the pace of scientific Competition can increase the pace of scientific advancementadvancement

C.C. Competition keeps scientists from sharing Competition keeps scientists from sharing knowledge with othersknowledge with others

D.D. Competition allows the public to know which Competition allows the public to know which scientist is the smartestscientist is the smartest

Question 14Question 14 Examine the scientific method flow chart Examine the scientific method flow chart

below. What should you do before you below. What should you do before you form a hypothesis?form a hypothesis?

A. Test a hypothesis c. Ask a question

B. Communicate the results D. Study the results

Question 15Question 15Ted would like to enter the local science fair, but Ted would like to enter the local science fair, but

he cannot think of a good hypothesis to test. he cannot think of a good hypothesis to test. Which of the following suggestions is the best Which of the following suggestions is the best place for Ted to start in order to form a testable place for Ted to start in order to form a testable hypothesis?hypothesis?

A.A. Ted should find a control group for his Ted should find a control group for his experimentexperiment

B.B. Ted should design an experiment and then find Ted should design an experiment and then find a hypothesis that the experiment will testa hypothesis that the experiment will test

C.C. Ted should make observations about the Ted should make observations about the natural worldnatural world

D.D. Ted should collect data for his experiment and Ted should collect data for his experiment and see what sort of hypothesis might fit the datasee what sort of hypothesis might fit the data

Question 16Question 16 A researcher would like to find out whether A researcher would like to find out whether

gamma radiation or beta radiation would gamma radiation or beta radiation would penetrate a concrete wall more rapidly. Which penetrate a concrete wall more rapidly. Which of the following statements would be best of the following statements would be best suited as a hypothesis the researcher could suited as a hypothesis the researcher could test?test?

A.A. Will gamma radiation or beta radiation Will gamma radiation or beta radiation penetrate a concrete wall in 20 seconds or lesspenetrate a concrete wall in 20 seconds or less

B.B. Gamma radiation will penetrate a concrete wall Gamma radiation will penetrate a concrete wall more quickly than beta radiationmore quickly than beta radiation

C.C. Beta radiation travels faster than gamma Beta radiation travels faster than gamma radiationradiation

D.D. Both beta radiation and gamma radiation can Both beta radiation and gamma radiation can penetrate a concrete wallpenetrate a concrete wall

Question 17Question 17

A biologist has hypothesized that a certain A biologist has hypothesized that a certain species of bacteria reproduces most rapidly in species of bacteria reproduces most rapidly in an environment where the temperature is an environment where the temperature is 25oC. When the biologist designs her 25oC. When the biologist designs her experiment, what should be the manipulated experiment, what should be the manipulated variable of the experimentvariable of the experiment

A.A. Amount of lightAmount of light C. Petri Dish SizeC. Petri Dish Size

B.B. Temperature Temperature D. Type of baceteriaD. Type of baceteria