1ST 9 WEEKS TEST 2013-2014

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

1. Observations that are descriptions or statements of information are called:a. numerical data c. qualitative datab. quantitative data d. descriptive data

2. What does infer mean?a. make observations without lookingb. to test a prediction in an experimentc. draw a conclusion from previous or unspoken evidenced. make an educated guess

3. Which of the following is not an example of a scientific hypothesis?a. Earthquakes happen because of stresses along continental plates.b. Some animals can detect ultrasound frequencies caused by earthquakes.c. Paintings are prettier than sculptures.d. Lava takes different forms depending on how it cools.

4. Which of the following increases the reliability of a scientific explanation?a. vague statements c. repeatable datab. notes taken after the investigation. d. several likely explanations.

5. Observations that involve measurements and numbers are called:a. numerical data c. qualitative datab. quantitative data d. descriptive data

6. Trina wanted to find out which of her bouncy balls can bounce the highest. She dropped the first ball onto the cement sidewalk. She the dropped the second ball from the same height onto the grass. She recorded how high each ball bounded. How could her experiment be improved?a. Measure the time it takes for each ball to reach its maximum height.b. Bounce both balls on the same surface.c. Drop the second ball from a higher height.d. Bounce the ball on the grass two times.

7. Which of the following statements is a quantitative observation? a. There’s an empty aquarium tank in the classroomb. The tank used to contain live fishc. The tank is 50 cm long, 30 cm wide, and 18 cm deepd. The tank is waterproof

8. Suppose you are planning an experiment to determine which disinfectant is best for killing bacteria often found in kitchens. Which of the following would be the most logical responding variable for your experiment?a. Amount of detergent c. Type of detergentb. Number of bacteria that survive after

using the detergent.d. Source of bacteria

9. When scientists study how well new medicines work, one group of patients receive the medicine, while a second group does not. Why?a. By not giving the medicine to one group of patients, scientists can see the effects of

that medicine on the other groupb. The scientists did the experiment wrong because both groups should have

received the medicine for the investigation to be accuratec. The group that didn’t receive the medicine couldn’t afford to buy the medicined. None of the above.

10.Which of the following statements is a quantitative observation you can make about the animals shown in the diagram?a. Both animals are invertebrates that live

on landc. Animal B has a body with three main

sections, two antennae on its head, and three pairs of legs

b. Animal A has a narrow body with a pattern on its back and extremely long legs.

d. Both animals have similar appearance, but animal A seems to be bigger than animal B.

11. A lab group is choosing a scientific question to research on the internet. The group chooses to research the question: “What kinds of sounds make the best music?” Which of the following statements most correctly describes the group’s question?a. The question is scientific because the study of sound is a scientific topicb. The question is scientific because it can be answered by gathering evidence about

the natural worldc. The question is not scientific because it is too broadd. The question is not scientific because it involves personal opinions.

12.

The diagram shows a sketch of fossils, or preserved remains, found at different rock layers at a particular location. Which of the following statements is a qualitative observation based on this diagram?a. The five types of fossils are classified as different kinds of animals.b. The fossils in layer A are ancestors of the fossils in other layers.c. The bottom fossil in layer E has a body that is made up of segments.d. Scientists can use this diagram to help learn how old each fossil is

13.The diagram above shows one way to measure the volume of an irregular object. Which of the following measurements gives the correct volume of the rock?a. 20 mL c. 6 mLb. 3 mL d. 23 mL

14. Viruses are particles smaller than bacteria. Viruses can cause disease when they invade specific types of living things. Which of the following is a scientific question about viruses?a. Is it right to destroy disease-causing viruses?b. Why do some viruses infect only plants, while other viruses infect only animals?c. How much money should be spent trying to eliminate diseases caused by viruses?d. Should government make rules for the way diseases caused by viruses are treated?

15.

How many centimeters longer is Leaf A than Leaf B?a. 5.8 cm c. 2.7 cmb. 4.3 cm d. 1.5 cm

16. A lab group is investigating this question: “When wind-driven sand particles strike rock, does sand particle size affect how fast rock is broken down?” Which of the following would be the group’s manipulated variable?a. Time it takes to break down a given

amount of rockc. The size of the sand particles

b. Mass of sand used d. The process used to create artificial wind

17.Which statement below accurately describes the mass of the solid in the diagram?a. 226.5 gb. 220.65 gc. 76.5 gd. There is no way to find the mass of the solid using this information

18. Every element has its own atomic number. The atomic number is the number of ____ in the nucleus of an atom of the element.a. electrons c. positronsb. neutrons d. protons

19. An atom has a neutral charge becausea. the atom has twice as many neutrons as protonsb. the atom has the same number of protons and neutronsc. the atoms has the same number of protons and electronsd. the atom the same number of electrons and neutrons

20. How do two isotopes of an element differ from one another?a. They have different numbers of

protonsc. They have different numbers of

electronsb. They have different numbers of

neutronsd. There is no difference

Use the periodic table to answer the following questions:

21. Which line on the periodic table separates the metals from the non-metals and metalloids?a. I c. IIIb. II d. IV

22. Which two elements have properties similar to those of Chlorine (Cl)a. Fluorine (F) and Bromine (Br) c. Phosphorus (P) and Silicon (Si)b. Nitrogen (N) and Carbon (C) d. Xenon (Xe) and Argon (Ar)

23. Which two elements in group 14 are most likely to be malleable and good conductors of electricity?a. Germanium (Ge) and Silicon (Si) c. Carbon (C) and Silicon (Si)b. Tin (Sn) and Lead (Pb) d. none

24. How many electrons can the elements in the carbon group gain, loose, or share?a. 1 c. 4b. 5 d. 6

25. How many electrons can the elements in the nitrogen group gain, or share?a. 2 c. 7b. 5 d. 3

26. Out of these three elements, which two are most likely to combine as a result of a chemical reaction? Magnesium Mg, Neon Ne, Chlorine Cla. Ne & Cl c. Mg & Neb. Mg & Cl d. none will react

27. Bob has a chunk of pure substance that is dull and crumbles when dropped. If he attaches it to an electrical source, what will happen?a. it will conduct electricity because it is a non-metalb. nothing because it is a non-metal and doesn’t conduct electricityc. nothing because it is a metal and metals don’t conduct electricityd. it will conduct electricity because it is a metal

Use the table below to answer the following questions8 9 10O F Ne

oxygen Fluorine Neon15.999 18.998 20.17916 17 18S Cl Ar

Sulfur Chlorine Argon32.06 35.453 39.948

28. Which combination of elements represents part of a group, or family of elements, of the periodic table?a. oxygen, fluorine, and neon c. fluorine and chlorineb. sulfur, chlorine, and argon d. oxygen and chlorine

29. Which element has properties most similar to oxygen?a. fluorine because it is in the same

periodc. neon because it is a gas

b. sulfur because it is in the same group d. none of these share properties with oxygen

30. All of the following are ways in which atoms can form bonds with other atoms EXCEPTa. losing electrons c. sharing neutronsb. gaining electrons d. sharing electrons

31. The only balanced equation shown is ____a. H2 + O2 H2O c. Ag + H2S Ag2S + H2

b. AgNO3 + NaI AgI + NaNO3 d. Na + Cl2 NaCl

32. Describe how a battery causes electrons to move in a circuit.a. A battery has a positive terminal that attracts electrons and a negative terminal that

repels electronsb. A battery has a positive terminal that repels electrons and a negative terminal that

attracts protonsc. A battery has a positive terminal that attracts protons and a negative terminal that

repels electronsd. A battery has a positive terminal that attracts electrons and a negative terminal that

repels protons

33. Describe how the electric resistance of a wire changes as the wire becomes longer. How does the resistance change as the wire becomes thicker?a. A longer wire has more resistance. A wire has less resistance as it becomes wider.b. A longer wire has less resistance. A wire has less resistance as it becomes wider.c. A longer wire has less resistance. A wire has more resistance as it becomes wider.d. A longer wire has more resistance. A wire has more resistance as it becomes wider.

34. Explain why the electric wires in houses are usually made of copper.a. Copper is inexpensive and can wire a whole house relatively cheaply

b. Copper is a poor conductor of electricity and has a low resistance so more heat is produced when current flows in copper wires

c. Copper is a good conductor of electricity and has a low resistance so less heat is produced when current flows in copper wires

d. Copper is expensive and so must be high quality material

35. Explain why buildings are wired using parallel circuits rather than series circuits.a. so current will stop flowing in

appliances after another appliance or device is turned off or disconnected

c. To save on money and energy bills by turning off several appliances at once

b. so current will continue to flow in appliances after another appliance or device is turned off or disconnected

d. buildings are not wired in parallel circuits, they are wired in series circuits

36. A metal wire is made thinner. How would you change the length of the wire to keep the electric resistance of the wire from changing?a. double the length c. shorten the wire lengthb. triple the length d. keep the length the same

Carefully review the table and answer the following questionsApproximate Cost of Electricity For Some Appliances

Appliance Wattage Average Daily Use (Hours)

Approximate Cost per month

Air Cleaner 35 24 $2.00Box Fan 100 24 $5.75Clothes Dryer 5,000 1/2 $6.00Color TV (19 inch) 70 6 $1.05Personal Computer 150 8 $2.90Laser Printer 70 2 $0.30

37. Which of the listed appliances costs the most to operate each month?a. Box Fan c. Clothes Dryerb. Personal Computer d. Color TV

38. According to the table, if two appliances are used for the same number of hours, the one with higher watttage will cost ____.a. more to operate c. the same to operateb. less to operate d. can’t answer from table.

39. The color TV costs more to operate than the laser printer because ___.a. The wattage of the color tv is higher.b. the color TV is on longer.c. the color TV is bigger.d. the power company charges more for TVs

40. Describe how you can tell if whether the type of charge on two different objects is the same or different.a. Bring the two objects together. If they move toward each other they are of

opposite charge.b. Bring the two objects together. If they move toward each other they have the same

charge.c. Bring the two objects together. If they move away from each other they are of

opposite charge.d. There is not enough information given here to determine the charges.

41. Charges are not able to flow easily througha. conductors c. insulatorsb. superconductors d. solenoids

Use this table to complete the following questionsPower ratings of some appliances

Appliance Power (W)Computer 350Color TV 200Stereo 250Toaster 1,100Microwave 900Hair Dryer 1,000

42. Which appliance will use the most energy if it is run for 15 minutes?a. microwave c. stereob. computer d. colot TV

43. Suppose using 100 W for 1 hour costs $0.10. How much would it cost to run the color TV for 8 hours?a. $1.00 c. $1.60b. $10.00 d. $0.16

44. Power grids use alternating current (AC) in transmission and distrubution systems. Which statement explains why AC is used instead of direct current (DC)?a. Transmission wires cannot carry

enough direct current to supply the needs of the power grid

c. Electrical energy must be transmitted as alternating curent because that is how it is produced at power plants

b. The voltage can be changed in an alternating current system to transfer energy more efficiently

d. Direct current would not be useful to electric company customers because appliances operate on alternating current

45. Which list shows the path of electricity from a local power substation to a lamp in a home?a. Substation transformer junction box outlet electric ciucuit of lampb. Substation outlet junction box transformer electric circuit of lampc. Substation junction box transformer outlet transformer electric

curcuit of lampd. Substation transformer junction box outlet transformer electric

curcuit of lamp

46. Which of the following is required for an electric curent to flow?

a. insulators c. an electric deviceb. positive charges d. an unbroken circuit

47. Which equation expresses Newton’s second law of motion?a. F = ma c. F = m - ab. F = m/a d. F = m + a

48. A probe traveling through outer space is moving at a constant velocity. Which statement applies to the motion of this probe?a. An unbalanced force is acting on the probe, causing it to accelerate.b. The probe will undergo constant acceleration until a force acts on it.c. The probe will continue on its current path until an unbalanced force acts on it.d. The force that makes the probe move through space is equal to its mass divided by

its velocity.

49. The following diagram shows the direction of motion of two objects of equal mass just before they collide.

According to Newton’s Third Law, which diagram shows the motion of the two objects after they have collided?a. c.

b. d.

The following diagram shows an experiment in which data were collected about falling objects.

Study the diagram above and then answer the following questions about the experiment.

50. Which of these is the most likely hypothesis for the experiment depicted on the left above? a. The more mass an object has, the

faster it will fall.c. Objects with less mass fall faster then

objects with more mass.b. The less mass an object has, the faster

it will fall.d. Objects of different masses can still

fall at the same speed.

51. The feather is falling at a different speed than the balls because the feather _____.a. has more gravity acting upon it c. has more friction acting upon itb. has less gravity acting upon it d. has less friction acting upon it

52. You do not know an object’s velocity until you know its a. speed c. speed and directionb. reference point d. acceleration

53. An object used as a reference point to determine motion should bea. accelerating c. deceleratingb. stationary d. changing direction

54. If you are sitting in a train, looking out the window and you see another train pass, what is your frame of reference to tell which train is moving?a. your body c. the passing trainb. your train d. the landscape

55. Two students on opposite sides of a box apply forces to the box. What must be true if the box does not accelerate?a. The forces are balanced.b. The forces are unbalanced and in the same direction.c. The forces are unbalanced and opposite, with the greater force to the left.d. The forces are unbalanced and opposite, with the greater force to the right.

56. An object weighs 300 newtons on Earth. The same object weighs only 50 newtons on the moon. Why does an object weight less on the moon than on Earth?a. because objects have less mass on the moonb. because there is weightlessness in spacec. because the moon’s mass is far more than that of the Earthd. because the moon has less gravitational pull than the Earth

57. Two boys wearing in-line skates are standing on a smooth surface with the palms of their hands touching and their arms bent, as shown above. If boy X pushes by straightening his arms out and boy Y holds his original position, what is the motion of both boys?a. Boy X does not move and Boy Y moves backwardb. Boy Y does not move and Boy X moves backwardc. Both Boy X and Boy Y move backwardd. The motion depends on how hard Boy X pushes

58. The above diagram in an example of which law?a. Newton’s 1st c. Newton’s 3rdb. Newton’s 2nd d. Law of Conservation of Momentum

59. A car accelerates from rest to speed of 24 m/s in 8 seconds. What is the car’s average acceleration?a. 16 m/s2 c. 3 m/s2

b. 24 m/s2 d. 192 m/s2

60. A force that causes an object to move in a circle is called a(n) ___a. balanced force c. gravitational forceb. unbalanced force d. centripetal force

61.The distance-versus- time graph above shows the motion of a jogger. The line is divided into segments. The middle segment is horizontal. What does that tell you about the jogger’s progress between minute 6 and minute 8? a. The jogger ran at a constant speed

between minute 6 and minute 8c. The jogger decreased speed between

minute 6 and minute 8.b. The jogger increased speed between

minute 6 and minute 8.d. The jogger was stationary between

minute 6 and minute 8.

62. Fossil fuels are considered nonrenewable resources because theya. burn so quickly.b. are in such high demand.c. take hundreds of millions of years to form.d. pollute the air.

63. The most plentiful fossil fuel in the United States isa. coal. c. natural gas.b. oil. d. wood.

64. What is the result of using fossil fuels more rapidly than they are formed?a. The reserves will eventually be used

up.c. The reserves will not be affected.

b. The reserves will be refilled more quickly.

d. The price of fossil fuels will fall.

65. The intense heat from Earth’s interior that warms the magma beneath Earth’s surface is calleda. hydrogen power. c. geothermal energy.b. tidal energy. d. solar energy.

66. The three major fossil fuels are coal, oil, anda. wood. c. uranium.b. natural gas. d. electricity.

67. Fossil fuels are considered nonrenewable resources because theya. burn so quickly. c. are in such high demand.b. take hundreds of millions of years to

form.d. pollute the air.

68. Which of the following is an advantage of solar energy?

a. It will not run out for billions of years. c. It must be collected from a huge area.b. It is not available at night. d. No backup energy sources are needed.

69. In a nuclear power plant, what is used to change water into steam?a. the burning of natural gas c. captured solar energyb. geothermal energy d. heat released from nuclear fission

reactions

70. Energy conservation meansa. slowing down a chemical change. c. burning a fuel to release energy.b. using fossil fuels to produce

electricity.d. reducing energy use.

71. Which of the following is an example of energy conservation?a. leaving your home uninsulated c. recycling aluminum soda cansb. leaving lights on whenever you leave a

roomd. driving a car alone into the city at rush

hour

72. Solar cells are sometimes used to power all of the following EXCEPTa. calculators. c. telephones.b. lights. d. passenger trains.

73. Nuclear reactions result in tremendous amounts ofa. uranium. c. fission.b. energy. d. mass.

74. The ozone layer protects people from which of the following?a. too much ultraviolet radiation c. the effects of radonb. carbon monoxide poisoning d. allergies

75. One group of gases that is responsible for destroying ozone in the ozone layer isa. car exhaust fumes. c. nitrogen oxides and sulfur oxides.b. Chloroflurocarbons (CFCs) d. carbon monoxide and carbon dioxide.

1ST 9 WEEKS TEST 2013-2014Answer Section

MULTIPLE CHOICE

1. ANS: C PTS: 12. ANS: C PTS: 13. ANS: C PTS: 14. ANS: C PTS: 15. ANS: B PTS: 16. ANS: B PTS: 17. ANS: C PTS: 18. ANS: B PTS: 19. ANS: A PTS: 1

10. ANS: C PTS: 111. ANS: D PTS: 112. ANS: C PTS: 113. ANS: B PTS: 114. ANS: B PTS: 115. ANS: D PTS: 116. ANS: C PTS: 117. ANS: C PTS: 118. ANS: D PTS: 119. ANS: C PTS: 120. ANS: B PTS: 121. ANS: C PTS: 122. ANS: A PTS: 123. ANS: B PTS: 124. ANS: C PTS: 125. ANS: D PTS: 126. ANS: B PTS: 127. ANS: B PTS: 128. ANS: C PTS: 129. ANS: B PTS: 130. ANS: C PTS: 131. ANS: B PTS: 132. ANS: A PTS: 133. ANS: A PTS: 134. ANS: C PTS: 135. ANS: B PTS: 136. ANS: C PTS: 137. ANS: C PTS: 138. ANS: A PTS: 1

39. ANS: B PTS: 140. ANS: A PTS: 141. ANS: C PTS: 142. ANS: A PTS: 143. ANS: C PTS: 144. ANS: B PTS: 145. ANS: A PTS: 146. ANS: B PTS: 147. ANS: A PTS: 148. ANS: C PTS: 149. ANS: A PTS: 150. ANS: D PTS: 151. ANS: B PTS: 152. ANS: C PTS: 153. ANS: B PTS: 154. ANS: D PTS: 155. ANS: A PTS: 156. ANS: D PTS: 157. ANS: C PTS: 158. ANS: C PTS: 159. ANS: C PTS: 160. ANS: D PTS: 161. ANS: D PTS: 162. ANS: C PTS: 1 DIF: L1

OBJ: 06.05.01.02: Explain why fossil fuels are considered nonrenewable resources.TOP: source_sx09_e_environmental_science_ch05_005 BLM: knowledge

63. ANS: A PTS: 1 DIF: L1OBJ: 06.05.01.01: Name the three major fossil fuels.TOP: source_sx09_e_environmental_science_ch05_020 BLM: knowledge

64. ANS: A PTS: 1 DIF: L1OBJ: 06.05.01.02: Explain why fossil fuels are considered nonrenewable resources.TOP: source_sx09_e_environmental_science_ch05_006 BLM: knowledge

65. ANS: C PTS: 1 DIF: L1OBJ: 06.05.02.01: Identify and describe various renewable sources of energy.TOP: source_sx09_e_environmental_science_ch05_027 BLM: knowledge

66. ANS: B PTS: 1 DIF: L1 REF: p. E-160OBJ: E.5.1.2 Name the three major fossil fuels. BLM: knowledge

67. ANS: B PTS: 1 DIF: L1 REF: p. E-164OBJ: E.5.1.3 Explain why fossil fuels are considered nonrenewable resources.BLM: knowledge

68. ANS: A PTS: 1 DIF: L2 REF: p. E-166OBJ: E.5.2.1 Explain the forms of energy provided by the sun. BLM: comprehension

69. ANS: D PTS: 1 DIF: L1 REF: p. E-176OBJ: E.5.3.2 Explain how a nuclear power plant produces electricity.

BLM: knowledge70. ANS: D PTS: 1 DIF: L1 REF: p. E-182

OBJ: E.5.4.2 Identify ways individuals can conserve energy. BLM: knowledge71. ANS: C PTS: 1 DIF: L2 REF: p. E-182

OBJ: E.5.4.2 Identify ways individuals can conserve energy. BLM: application72. ANS: D PTS: 1 DIF: L2 REF: p. E-166

OBJ: E.5.2.1 Explain the forms of energy provided by the sun. BLM: application73. ANS: B PTS: 1 DIF: L2 REF: p. E-174

OBJ: E.5.3.1 Describe what happens during a nuclear fission reaction.BLM: comprehension

74. ANS: A PTS: 1 DIF: L2 REF: p. E-147OBJ: E.4.5.1 Describe how human activities have damaged the ozone layer.BLM: comprehension

75. ANS: B PTS: 1 DIF: L1 REF: p. E-148OBJ: E.4.5.1 Describe how human activities have damaged the ozone layer.BLM: knowledge