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- 1. Multiple Choice1. Students look out a window for 5 min. They record the number of vehicles that pass, the type of vehicle (car, pickup truck, motorcycle, and so on), and the color of the vehicle. What are the students doing?observingconcludingexperimentingpredicting
- 2. Multiple Choice2. Each measuring tool is designed to measure a specific property of an object or material. Which of these tools can be used to measure the volume of a material?measuring cupmeasuring tapepan balancethermometer
- 3. Multiple ChoiceLily wants to determine how color affects the ability of a material to absorb heat. She places a sheet of white construction paper under a lamp and a sheet of black construction paper in a closet. She places a thermometer on both sheets of paper and records the temperatures. After ten minutes, she records the temperatures again. Lily concludes that white objects absorb heat better than black objects. She shares her results with the class. Is her conclusion valid?Yes, because she analyzes data.No, because she does not control variables.Yes, because she communicates her results.Yes, because she set up an experiment using two different colors.
- 4. Multiple ChoiceModels allow scientists to test things that might be too expensive or difficult to test using the real item. Which of the following would be an investigation that could use a model?whether a new spray will repel mosquitoeshow many times per day a robin leaves her nesthow much water a cubic meter of sand can holdHow much weight can a new bridge support
- 5. Multiple ChoiceA scientific method is a way to investigate a scientific problem. Although the order of steps can vary, the tasks performed during each step often stay the same. During which step of the scientific method would a scientist collect data?developing a planforming a predictiontesting the predictioncommunicating the results
- 6. Multiple ChoiceScientists want to determine if walls that are painted a certain color will raise a person's blood pressure. They plan to set up four rooms. Which variable should change in each room?the type of room usedthe color usedthe instruments used to test the blood pressurethe amount of time the person spends in the room
- 7. Multiple ChoiceRosa conducts an experiment. Her results do not support her prediction. What should she do?Repeat the experiment to check for errors.Change the results to support the predictionDiscard the data because it does not agree with her prediction.Try to make an experiment that will give her the results she wants.
- 8. Multiple Choice. A scientist explained that the frog population in a pond was getting smaller. She proposed that the cause was an increase in the water temperature. The scientist collected information and recorded it in the following table.
Week Average water temperature
( °C) 1 18
2 21
3 22
4 24
What other information should this scientist have collected to support her explanation?the times the temperatures were takenthe number of frogs she observed each weekthe weather conditions when temperatures were takenthe other types of organisms that were living in the pond - 9. Multiple ChoiceMeteorologists track hurricanes as they develop over oceans. The following illustration shows the anticipated storm track of a hurricane that developed in August 2009 over the Atlantic Ocean.
What are meteorologists doing when they create storm tracks such as this one?predictingtesting their ideasexplaining how a hurricane developsgathering information to determine the strength of a hurricane - 10. Multiple ChoiceScientists re not the only ones who gather information. For example, historians gather information to describe what has happened in the past. However, scientists gather information differently than others. Which way of gathering information do only scientists use?readingdrawingrecordingexperimenting
- 11. Multiple Choice. Leon likes doing science experiments. However, he could not understand why the directions said to repeat the experiment three times. Why do scientists repeat their experiments?to avoid making observationsto throw out the information they collected earlierto develop a new procedure that they can use laterto make sure that the information they collect is reliable
- 12. Multiple Choice2. Michael rides a bike made by Company A. Luis rides a bike made by Company B. How can Michael and Luis determine in a scientific way whose bike has tires that last longer?Read information about the tires from each manufacturer.Ask ten classmates who ride each bike which tires last longer.Each student should ride his own bike for 25 days, then compare the tires.Use a machine to test the bikes in the same way for 25 days, then compare the tires
- 13. Multiple ChoiceA doctor says that drinking two glasses of milk in the morning will give students more energy. Which of the following would be good scientific evidence for or against the doctor's claim?a brochure from the doctor stating the benefits of milkdata from scientific investigations about drinking milk in the morninga TV advertisement that says drinking milk in the morning gives people plenty of energystatements from five people about how drinking milk in the morning gives them energy
- 14. Multiple ChoiceWhen Andrew conducts an investigation, he repeats the investigation several times. Why does Andrew do this?to create inventionsto do the work safelyto get consistent resultsto be sure the work is correct
- 15. Multiple Choice. Christopher wanted to learn more about Ganymede, one of Jupiter's moons. Which of the following sources of information would be Christopher's best choice?his friendsthe local newspapera neighborhood surveya university's astronomy web page
- 16. Multiple ChoiceEva wants to look at cells taken from the inside of her cheek. Which tool will help her see these cells?magnifying classtelescopemicroscopebinoculars
- 17. Multiple ChoiceNina wants to find out whether music affects students’ test scores. She gives three groups of students the same math test. The first group listens to rock music while taking the test, the second group listens to classical music, and the third group takes the test in silence. What is the dependent variable in this experiment?test scorestype of musicages of studentsnumber of students
- 18. Multiple Choice
Ted saw the plants below. Which statement is an inference about the two plants?Plant A is taller than Plant B.Plant A has bigger leaves than Plant B.The flowers on Plant A have fewer petals than the flowers on Plant B.Bugs prefer eating Plant A to Plant B. - 19. Multiple ChoiceKenneth measures the mass of his science textbook. Which measurement is most likely the mass of his book?2 grams2 meters2 kilograms2 kilometers
- 20. Multiple ChoiceMs. Jacobs is demonstrating a chemical change by placing apple slices in hydrogen peroxide. Which safety concern is the MOST important for students to remember?Wear latex gloves.Do not eat the apple slices.Wash the apple slices with soap and water.Wear an apron.
- 21. Multiple ChoiceAva studied the speed of a wind-up toy car. She used a stopwatch to find how long it took the car to go one meter. How often should she wind up the car and why?Once—the car will always take the same amount of time to go one meter, so once is enough.Twice—once to practice and once to get the real time measurement.Many times—the measurement may be different each time. If Ava has many measurements, she can find the average and the range.Many times—Ava should throw out the measurements that are too low or too high and keep the measurements that look correct.
- 22. Multiple ChoiceWhich of the following is a testable question?Does salt taste good?Will the amount of salt added to a mixture increase its conductivity?Which brand of salt is best?Why do people use salt?
- 23. Multiple ChoiceWhich of the following questions could be best be explored using a scientific investigation?How many seeds in an apple?How many pebbles are at the bottom of the river?How many ladybugs have ever lived?Why are there insects on Earth?
- 24. Multiple ChoiceTommy wants to know if squirrels prefer popcorn over peanuts. In what order should he do the following steps?
W.Write a report on his findings
X.Select a suitable spot to observe the squirrels
Y.Observe and record how many squirrels eat popcorn or peanuts
Z.Put out a pile of popcorn and a pile of peanuts near each otherX → Y → Z → WZ → X → W → YX → Z → Y → WX → W → Y → Z - 25. Multiple ChoiceImagine that a scientist discovered that sugar caused brain damage in frogs. She wants to do another study to figure out if the type of sugar makes a difference.
Which of the following might be her hypothesis?Frogs given the most sugar will have the worst damage.Frogs and humans will both have brain damage if given sugar.Frogs will have brain damage if exposed to both brown sugar and regular sugar.Giving sugar to frogs should be illegal. - Answer choicesTagsAnswer choicesTags