Final Review

Misc

100

20. Paul was playing base ball. When he slid into 2nd base, he broke his leg. What type of bioengineered device are the crutches Paul uses to help him walk while his leg is in a cast? (TE4) a. Adaptive c. Manipulated b. Resistant d. Assistive

d. Assistive

200

16. Which two pieces of lab equipment can be used to find and compare the densities for different wood block samples? (Inq 2/TE 1) a. Balance and ruler c. Graduated cylinder and microscope b. Beaker and stopwatch d. Balance and thermometer

c. Graduated cylinder and microscope

300

7. A study is done to determine how stress affects the heart rate of humans. In this study stress is the _________ and heart rate is the _________. (Inq 1) a. Dependent variable, dependent variable b. Independent variable, dependent variable c. Dependent variable, independent variable d. independent variable, independent variable

b. Independent variable, dependent variable

400

39. A combination of salt and sugar grains is best classified as a mixture because (9.4A) a. The grains taste different from one another. b. Both the salt and sugar grains are in the same state of matter. c. No new chemical bonds are formed between the salt and sugar grains. d. A new product is formed when the salt and sugar grains are combined.

c. No new chemical bonds are formed between the salt and sugar grains.

500

29. Which statement best describes the difference between a mixture and a compound? (9.4) a. Compounds are pure elements. b. Compounds contain elements bonded together. c. Compounds can be easily separated into distinct parts. d. Compounds have multiple boiling points

b. Compounds contain elements bonded together.

Misc

100

13. Which kind of model would you use to represent a human heart? (Inq 2/TE 1) a. A mathematical model c. A physical model b. A conceptual model d. A natural model

a. A mathematical model c. A physical model b. A conceptual model

200

11. Which of the following would be a negative unintended consequence of X-rays? (TE3) a. Viewing bones inside the body c. Exposure to radiation b. Finding cavities in teeth d. All of these

c. Exposure to radiation

300

19. Which of the following is an intended benefit of Global Positioning Systems (GPS)? (TE3) a. Helping emergency workers find home in a rural area b. The government spying on us c. Tracking migratory birds d. Tracking alien space craft

a. Helping emergency workers find home in a rural area

400

17. The procedure below is designed to test how water temperature affects the rate at which sugar dissolves. * Measure 150mL of water into each beaker. * Heat water to three different temperatures. * Put 3g of sugar into each of the beakers at the same time. * Stir and record the time it takes for the sugar to completely dissolve. Which additional step will most improve the investigation? (Inq 5) a. Use 200mL of water in each beaker b. Record the initial and final temperatures of the water c. Stir at different rates for each beaker d. Record the times when sugar is half dissolved.

b. Record the initial and final temperatures of the water

500

48. Sodium chloride (table salt) is a compound formed when a chlorine atom takes an electron from a sodium atom. Which of the following describes the force that holds the resulting chlorine particle together? (9.11A) a. An ionic bond c. A metallic bond b. A neutral bond d. A covalent bond

a. An ionic bond

Misc

100

8. Which would be a likely cause of freezing water? (Inq 4) a. The water is exposed to temps greater than 100C b. The wind blew in a polar vortex freezing the water c. The water is exposed to temps less than 0C d. None of the above

c. The water is exposed to temps less than 0C

200

14. In a __________ study for a drug, two (statistically) identical groups of patients are compared, one of which receives the drug and one of which receives a placebo, and neither the patients nor the experimenters know which group is getting the drug and which is getting the placebo. (Inq 1) a. Marginal c. Single-blind b. Experimental d. Double-blind

d. Double-blind

300

18. The students at a middle school are having a technology competition to see who can design the best new product. What is the first step the student should take as they begin their work? (TE2) a. Build and test a product b. Identify a problem or need c. Determine if a product meets its goals d. Identify any problems or flaws in the design

b. Identify a problem or need

400

15. Which of the following would be an effect of air travel, which allows people to move quickly over long distances? (Inq 4) a. News will travel more slowly from one place to another b. Diseases will be spread more quickly c. International trade will become less common d. Cultures will become less common

b. Diseases will be spread more quickly

500

44. Using your knowledge of the periodic table and ionic compound charges, predict which element Sulfur (S) might bond with. (9.11B) a. Aluminum (Al) c. Potassium (K) b. Carbon (C) d. Magnesium (Mg)

d. Magnesium (Mg)

Misc

100

40. Which elements make up most of the atmosphere of Earth? (9.5) a. Oxygen and nitrogen c. Water vapor and helium b. Nitrogen and helium d. oxygen and water vapor

a. Oxygen and nitrogen

200

42. Which of these occurs during all chemical changes? (9.2A) a. New elements are formed c. New bonds form between atoms b. Temperature increases d. Phase changes from solid to liquid

c. New bonds form between atoms

300

12. A bioengineering firm has created a new portable dialysis machine that a person wears around their abdomen. Which type of bioengineered product is this? (TE4) a. Adaptive c. Manipulated b. Resistant d. Assistive

a. Adaptive

400

36. A student designs an experiment to test the acidity of the water in several ponds near an industrial area. Which tool would best help a student obtain accurate data? (9.12) a. Oxygen probe c. pH indicator b. Metric ruler d. Heat sensor

c. pH indicator

500

33. The sun is much larger than the moon. Which of these best explains why the moon, despite its smaller size, has a greater effect on ocean tides than the sun does? (12.5) a. The moon is much closer to the Earth. b. The moon produces less light than the sun. c. The moon and Earth have the same composition. d. The moon has a lower surface temperature.

a. The moon is much closer to the Earth.

Misc

100

10. When testing scientific concepts, it is often necessary to create new technology in order to make progress. For example, if a scientist wants to study the surface of the Sun, what equipment would he need to invent? (TE2) a. Heave duty doffing devices b. Short wave radios c. High powered microscopes d. Heat resistant probes

d. Heat resistant probes

200

43. Which is the particle charge of electrons? (9.1A) a. Negative c. Neutral b. Positive d. Sometimes positive and sometimes negative

a. Negative

300

46. Elements in Group 18 of the periodic table are called inert gases because they are… (9.9B) a. Ordorless. c. Most nonreactive. b. Mostly nonreactive. d. Highly reactive with oxygen

c. Most nonreactive.

400

35. Which keeps Earth in its orbit? (12.6) a. The rotation of the Earth. c. The revolution of the moon. b. The gravity of the sun. d. The gravity of the moon.

b. The gravity of the sun.

500

24. The clearing of rain forests for agricultural use has led to a decrease in biodiversity in many areas. One potential consequence of deforestation is… (5.4) a. An increase in the amount of atmospheric oxygen b. The loss of plants with potential medicinal uses c. A decrease in soil erosion d. Improved habitat for wildlife

b. The loss of plants with potential medicinal uses