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Physical Science Unit 1 Test - Intro to Science

Multiple ChoiceIdentify the choice that best completes the statement or answers the question.

____ 1. What type of graph is best for comparing information collected by counting?a. Bar graph c. None of theseb. Line graph d. Circle graph

____ 2. What should you do if you need to smell the odor of a chemical?a. Hold the chemical away and take a

small whiff with your nose.c. Hold the chemical away and waft

(wave) the smell towards you.b. Hold the chemical away and take a big

whiff with your nose.d. Put your nose right over the chemical

and take a small whiff.

____ 3. The amount of space occupied by an object is itsa. length c. volumeb. density d. mass

____ 4. The first thing you should do if a spill or accident occurs isa. try and continue and clean up at the

end of labc. clean it up

b. try and continue the lab and tell theteacher at the end of lab

d. tell the teacher

____ 5. The term that best describes an organized set of investigation procedures isa. Procedure c. Variableb. Hypothesis d. Scientific method

____ 6. Why should you not place hot glassware in water?a. None of these c. Water might get in the glassware and

mess up the experiment

b. Rapid cooling may make it shatter d. You dont want the water to heat up____ 7. What is the SI base unit for length?

a. meters c. kilometersb. centimeters d. feet

____ 8. What is the SI base unit for mass?a. kilogram c. poundb. gram d. meter

____ 9. You should wear safety goggles in the lab to protect your eyes froma. all of the these c. heated substancesb. things that might shatter d. cheicals

____ 10. Which type of graph is best for showing how a whole is broken down into parts?

a. Circle graph c. Bar graphb. None of these d. Line graph

____ 11. What should you always do after handling chemicals?a. Wash your hands in soap and water c. Wipe your hands off with paper towelsb. Wipe your hands on your pants d. Rinse your hands off in water

____ 12. What is the SI base unit for temperature?a. degrees Celcius c. Ampsb. degrees kelvin d. degrees Fahrenheit

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____ 13. What is the proper way to unplug any kind of equippment?a. Pull on the cord and the plug c. Pull it out by the cord gentlyb. Pull it out by the cord very hard d. Pull it out by the plug

____ 14. SI units area. units that are used only to measure

mass

c. units that used only to measure

distanceb. the type of units that are only used inthe U.S. like feet and inches

d. the accepted units used by scientistsaround the world

____ 15. What should you do at the conclusion of lab?a. Go sit down c. Clean up your stationb. Pass in your paper d. Finish your homework

____ 16. What should you do with chipped glassware?a. Inform the teacher who will help you

dispose of it properly.c. Tell the teacher who will throw it in the

trash.b. Use it if it is not too bad, it can be

expensive.d. Throw it away in the trash.

____ 17. What should you do if you get something in your eyes?a. Immediately flush eyes with water andthen rub

c. Keep blinking

b. Immediately try and rub it out d. Immediately flush eyes with water anddo not rub them

____ 18. How do you properly treat a burn?a. Immediately put on aloe c. Immediately flush with cold water until

the burning sensation is lessenedb. Immediately put on ointment and a

bandaged. None of these

____ 19. What is the density of a rock that has a mass of 20 g and a volume of 5 mL?a. 100 g/mL c. 25 g/mLb. 4 g/mL d. 0.25 g/mL

____ 20. Which variable is found on the x-axis?a. control c. independentb. constant d. dependent

____ 21. Which variable is found on the y-axis?a. constant c. dependentb. independent d. control

____ 22. What type of graph shows the relationship where the dependent variable changes due to a change inthe independent variable?a. Bar graph c. Line graphb. None of these d. Circle graph

____ 23. The quantity of matter in an object isa. is mass c. its lengthb. its density d. its volume

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Matching

a. Control d. Law

b. Theory e. Dependent variablec. Independent variable f. Constant

____ 24. The standard to which test results can be compared

____ 25. Explanation based on many observations and investigations

____ 26. Statement about something that always seems to be true

____ 27. What the experimenter measures in an experiment

____ 28. What the experimenter changes in an experiment

Short Answer

29. What is the correct way to say your hypothesis is right and what is the correct way to say yourhypothesis is wrong?

.

30. List the seven steps of the scientific method in the order that was presented in the notes.

.

31. Why is it important to have standards of measurement?

.

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Problem

32. A student wants to know the relationship between hours of TV watched every day with science testaverage.

Hours of TVwatched per

day

Average science test score

0 95

.5 93

1 82

2 75

5 60

a. Write the variable on the appropriate axis

b. Place an appropriate number scale on each axis.

c. Plot each data point on the graph.

d. Draw the best fit line for the data points

e. Title the graph.

f. Identify the dependent and independent variables.

g. What is the relationship between the two variables?

33. Mr. Brown wants to investiate the relationship between the amount of nitrogen in plant soil and

the amount that the plant grows. Mr. Brown sets up 9 pots to grow tomato plants in: 3 pots that

have no added nitrogen in the soil, 3 pots that have 1 nitrogen pellet, and 3 pots that have 2

nitrogen pellets. The plants have the same type of soil, are all the same size, are watered the same

amount, and are exposed to the same amount of light. Mr. Brown hypothesizes that if plants have

more nitrogen in the soil they will grow taller. The plants with no nitrogen pellets average 10 cm.

The plants with 1 nitrogen pellet average 13 cm. The plants with 2 nitrogen pellets average 16 cm.

a. What is the independent variable?

b. What is the dependent variable?

c. What is the control?

d. What should Mr. Browns conclusion be?

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34. A basketball player wants to see the relationship between hours spent practicing freethrows everyweek to the percentage of makes out of 10 shots.

Hours of

practice per

week

Average percentage of

makes out of 10 shots

0 55

1 65

2 70

5 85

7 89

a. Write the variable on the appropriate axis

b. Place an appropriate number scale on each axis.

c. Plot each data point on the graph.

d. Draw the best fit line for the data points

e. Title the graph.

f. Identify the dependent and independent variables.

g. What is the relationship between the two variables?

35. Mr. Brown wants to investigate the life of different types of bulb on his overhead projector. Mr.

Brown hypothesizes that the new Mr. Shinys bulbs will last longer than the old bulbs. The old

bulbs are called Ol Reliables. Mr. Brown determines that Ol Reliables last an average of 21 hours.

Mr. Brown determines that the new bulbs, Mr. Shinys, last an average of 16 hours.

a. What is the independent variable?

b. What is the dependent variable?

c. What is the control?

d. What should Mr. Browns conclusion be?

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Physical Science Unit 1 Test - Intro to ScienceAnswer Section

MULTIPLE CHOICE

1. ANS: A PTS: 12. ANS: C PTS: 1

3. ANS: C PTS: 1

4. ANS: D PTS: 1

5. ANS: D PTS: 1

6. ANS: B PTS: 1

7. ANS: A PTS: 1

8. ANS: A PTS: 1

9. ANS: A PTS: 1

10. ANS: A PTS: 1

11. ANS: A PTS: 112. ANS: B PTS: 1

13. ANS: D PTS: 1

14. ANS: D PTS: 1

15. ANS: C PTS: 1

16. ANS: A PTS: 1

17. ANS: D PTS: 1

18. ANS: C PTS: 1

19. ANS: B PTS: 1

20. ANS: C PTS: 1

21. ANS: C PTS: 122. ANS: C PTS: 1

23. ANS: A PTS: 1

MATCHING

24. ANS: A PTS: 1

25. ANS: B PTS: 1

26. ANS: D PTS: 1

27. ANS: E PTS: 1

28. ANS: C PTS: 1

SHORT ANSWER

29. ANS:supported or not supported/rejected

PTS: 1

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30. ANS:State the problem, gather information, form a hypothesis, perform an experiment, analyze data, form aconclusion, keep accurate records/repeat

PTS: 1

31. ANS:measurements using the same standard can be compared to eachother

PTS: 1

PROBLEM

32. ANS:correct answers will have same basic graph

PTS: 1

33. ANS:a. amount of Nb. plant growthc. no N plantsd. accept/support

PTS: 1

34. ANS:correct answers will have same basic graph

PTS: 1

35. ANS:a. bulb typeb. bulb lifec. ol reliabled. reject

PTS: 1

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ID: APhysical Science Unit 1 Test - Intro to Science [Answer Strip]

_____ 1.A

_____ 2.C

_____ 3.C

_____ 4.D

_____ 5.D

_____ 6.B

_____ 7.A

_____ 8.A

_____ 9.A

_____ 10.A

_____ 11.A

_____ 12.B

_____ 13.D

_____ 14.D

_____ 15.C

_____ 16.A

_____ 17.D

_____ 18.C

_____ 19.B

_____ 20.C

_____ 21.C

_____ 22.C

_____ 23.A

_____ 24.A

_____ 25.B

_____ 26.D

_____ 27.E

_____ 28.C