Unit 1 Test Name _____________________

Multiple Choice Section (2 points each)

1. What's the difference between a hypothesis and a theory?a. "Theory" is another word for "fact;" "hypothesis" is another word for "guess"b. Hypotheses can't be proven; theories canc. Theories have been confirmed through tests; hypotheses haven'td. Theories contain many hypotheses; a hypothesis only contains one theory

2. Place the following steps in sequence: A) Recognizing a problem; B) Testing a hypothesis; C) Drawing inferencesa. A, C, Bb. A, B, Cc. B, C, Ad. C, B, A

3. In the phrase, "The scientific method is an analytic process for determining why things happen," what's the best synonym for "analytic?"a. Probableb. Amazingc. Incoherentd. Logical

4. What must you do before you make a hypothesis?a. Run an experimentb. Make observationsc. Form a theoryd. Draw conclusions

5. If you were running an experiment to determine the temperature at which beans sprout the fastest, what would be the variable?a. The number of beans you plantb. The height of the sprouts you growc. The amount of water you give the beansd. The temperature at which each bean is kept

6. You should run an experiment several times to make sure your results are consistent. In the preceding phrase, what does "consistent" mean?a. Obviousb. Perfectc. Unchangingd. Testable

7. What might cause a theory to change over time?a. New laws passed by the governmentb. New but untestable ideas

c. Changes in public opiniond. The discovery of new evidence

8. Evolution is one example of a theory. From what you know about the scientific method, what can you conclude about this biological theory?a. It's been tested many timesb. Scientists don't need to test it anymorec. No one is allowed to test whether it's true or notd. There is very little evidence to support it

9. Which of the following is a testable hypothesis?a. Roses are more beautiful than violetsb. A plant needs at least five hours of sunlight per day to growc. Ice cream is deliciousd. Humans will someday land on Mars

10. What happens if you test a hypothesis multiple times and the data doesn't support your prediction?a. Change the data to support your predictionb. Run the experiment again until you get the results you're looking forc. Conclude that your hypothesis cannot be provend. Re-think your hypothesis

11. You are heating a piece of glass and now want to pick itup. You shouldA. use a rag or paper towels.B. pick up the end that looks cooler.C. use tongs.D. pour cold water on it.

12. Approved eye protection devices (such as goggles) areworn in the laboratoryA. to avoid eye strain.B. to improve your vision.C. only if you don’t have corrective glasses.D. any time chemicals, heat or glassware are used.

13. When gathering glassware and equipment for anexperiment, you shouldA. read all directions carefully to know whatequipment is necessary.B. examine all glassware to check for chips or cracks.C. clean any glassware that appears dirty.D. All of the above.

14. Personal eyeglasses provide as much protection asA. a face shield.B. safety glasses.C. splashproof chemical goggles.D. none of the above.

15. After completing an experiment, all chemical wastesshould beA. left at your lab station for the next class.B. disposed of according to your instructor’s directions.C. dumped in the sink.D. taken home.

16. The following footwear isbestin the laboratory.A. sandalsB. open-toed shoesC. closed-toed shoesD. shoes appropriate for the weather

17. If an acid is splashed on your skin, wash at once withA. soap.B. oil.C. weak base.D. plenty of water.

18. Sustainable development is affected by economic, social, political, and environmental factors. Which factor affecting sustainable development is an environmental factor?

A.how much it costs to mine a resource

B.whether a resource is renewable

C.the income levels for residents in a particular area

D.the type of government in a particular area

19. A town is located in the midst of a hardwood forest. Which option is best for long-term sustainable development for the forest?

A.cutting the forest for timber and then replanting

B.clearing the forest for grazing

C.burning the forest

D.promoting recreational activities in the forest

20. A city wants to implement environmentally friendly policies to promote sustainability. Which policy would best ensure that accountability toward the environment is part of the plan?

A.Department supervisors must report on the amount of money spent each week.

B.Department supervisors must report on the amount of paper recycled each week.

C.Department supervisors must report on the number of interoffice e-mails sent each week.

D.Department supervisors must report on the number of complaints from residents addressed each week.

21. One of the first laboratory activities in Physical Science class is to observe a burning candle. Which two safety practices are most important for this activity?

A.Wear closed-toe shoes and use an insulated glove.

B.Tie back long hair and fasten loose clothing.

C.Have a beaker of water to put out fires and use safety tongs.

D.Use paper towels to catch wax drips and use a gas lighter to ignite candles.

22. Malcolm’s teacher is demonstrating an experiment where sodium hydroxide (NaOH) pellets are added to water and the temperature change is observed. Malcolm wrote down the process steps.

1. Put water in a beaker.

2. Slowly add NaOH pellets.

3. Take initial water temperature.

4. Record the water temperature every 5 seconds.

Which statement identifies the error in the process Malcolm wrote down?

A.Step 2 should be done last.

B.Step 1 should be done after the initial temperature reading.

C.Step 3 should be done before the NaOH is added.

D.Steps 3 and 4 should refer to air temperature.

23. A student collects soil samples from different areas in Louisiana and brings them to school. Using these samples, which question could the student answer by means of a scientific investigation?

A.Were soils in the past better than those collected today?

B.Should the soil samples be placed in the school yard?

C.Which soil looks the best when it is dry?

D.How well does each soil retain water?

24. A group of students is measuring current as a function of resistance in several circuits while a constant voltage is applied from a power supply. Which safety measure should be taken during the experiment?

A.Wire the terminals of the power source in series to each other.

B.Wire the ammeter in parallel with the voltage source.

C.Measure the current while no voltage is applied to the circuit.

D.Turn off the power supply before making changes to the apparatus.

25. Students followed these steps in an experiment that uses a light microscope to study cells.

Light Microscope Procedure

1. Use a razor to scrape cells from a potato.

2. Place the cells on a slide.

3. Look at the cells through the microscope.

4. Add iodine to the slide to stain the starch grains in the potato cells.

5. Make drawings to compare the slides before and after the iodine was added.

Which safety measures apply to this experiment?

A.thermal safety, fume safety, and electrical safety

B.thermal safety, open flame alert, and eye safety

C.sharp object, clothing stain, and electrical safety

D.sharp object, plant, and chemical hazard safety

26. Which of the following cannot be recycled?

A. Milk cartons

B. Plastic water bottles

C. Glass containers

D. Paper bags

E. None of the Above

27. Who can recycle?

A. Your teachers

B. Everyone

C. Your best friend

D. You

E. Your mom

28. If you recycle one ton of paper, how many trees can you save?

A. One

B. Nine

C. Seventeen

D. Thirty-five

E. One Hundred

29.How many times can glass be recycled?

A. None, glass can’t be recycled!

B. Once

C. Four times

D. Twenty times

E. Forever

30. How many plastic bottles do Americans go through every year?

A. 1.8 million

B. 2.5 million

C. 5.3 million

D. 7.1 million

E. 9.4 million

31. The average aluminum can is made up of how much recycled

aluminum?

A. 10%

B. 30%

C. 50%

D. 70%

E. 100%

32. Where is the closest recycling center to Chesnee?

A. The landfill

B. a hole in your backyard

C. Cooley springs

D. Lake Blaylock

E. 6116 Red Rose

34. What ways can you help save our earth?

A. Re-use your plastic bottles and bags

B. Reduce the amount of waste you produce

C. Plant a tree

D. Recycle

Free ResponseWrite your answers on this paper. For the following statements (26-30), determine whether it follows the sustainable ethic or frontier ethic. Defend your answer. (3 points each)

26. Everybody lives downstream.

27. The person who dies with the most toys wins.

28. For every major decision made to the environment you need to think about the next seven generations that come after you.

29. Earth first; we will destroy the other planets later.

30. In the 21st century, I think the heroes will be the people who will improve the quality of life, fight poverty and introduce more sustainability.

Answer the following (31-32) questions in complete sentences (4 points each).

36. From the ecofootprint quiz we took on the chromebooks, list two ways you could reduce your carbon footprint.

40. List are two ways that you could promote sustainability in your community.