msnielsencoursessite.weebly.commsnielsencoursessite.weebly.com/uploads/1/3/5/8/13589317/... · web...

Science 9Practice Final

Block: ______

Full Name: _______________________

Total Marks: ______ / 70Part A:Multiple Choice: _____ / 65

Part B:Numerical Response: _____ / 5

1. Which of the following statements is correct?

A. A community refers to the same species living in an area.

B. A community consists of non-living things in the same area.

C. A population refers to all living things in an area.

D. A population consists of members of the same species.

Use the following information to answer the next question.

The Rocky Mountain Natural Region covers a vast area of land.

The vegetation consists of white spruce, aspen, Douglas fir, lodgepole pine trees, as well as juniper and wild rose shrubs.

Some of the animals that live in the area are grizzly bears, woodland caribou, Cooper’s hawk, and the great grey owl.

2. Some biotic factors in the Rocky Mountain Natural Region ecosystem are:

A. air, water, rocks

B. rocks, snow, white spruce

C. white spruce, Douglas fir, wild rose shrubs

D. rose shrubs, water, grizzly bears

3.Greg has a red-furred cat, Samantha has a white cat, and Jonathon has a black and white one. These differences in fur colour are called

A. natural selection

B. mutualism

C. interspecies competition

D. variability


It is commonly accepted by scientists, that giraffes had a variety of different neck lengths, thousands of years ago. As competition increased for leaves and grasses, the giraffes were forced to eat leaves higher up in trees.

The long-necked giraffes survived, but those with short necks had a difficult time. Eventually, only long-necked giraffes were able to survive and reproduce.

4.Which of the following has led to the survival of the giraffe?

A. niche

B. resource partitioning

C. natural selection

D. parasitism

Use the table below to answer the following question.

Read the following statements:

A. The best-adapted organisms survive in an environment.

B. Differences among individuals exist in a population.

C. Animals that run the fastest survived the introduction of a fast predator into their habitat.

D. Tigers have coats that range from white with brown stripes to orange with black stripes.

Numerical Response 2. Determine if each statement in the table refers to either 1) variability, or 2) natural selection.

If the statement refers to variability, put the number 1 in the correct spot below. If the statement refers to natural selection, put the number 2 in the correct spot below:

_____________ _____________ _____________ _____________A B C D

(Record your four-digit answer on the numerical response section on the last page of this booklet.)

Use the table below to answer the next question.

5.The graph above best describes

A. discrete variation.

B. continuous variation.

C. the role of the environment.

D. a non-heritable characteristic.

6.The expression of variation in an organism depends

A. solely on the environment.

B. solely on the heritable traits of an organism.

C. on both the environment and heritable traits of an organism.

D. solely on the non-heritable characteristics of an organism.

7. A rancher has only one male bull, and thirty female cows. Which method of artificial selection would be best to produce large numbers of offspring in a short period of time?

A. artificial insemination

B. cloning

C. genetic engineering

D. in vitro fertilization

8. One method of reproduction is a process in which a parent produces an attached, smaller version of itself that eventually detaches and becomes a new individual. The new individual is identical to the parent. This method of reproduction is called:

A. budding

B. binary fission

C. spore production

D. cutting

9.Sexual reproduction in animals or plants relies on the union of two specialized cells known as:

A. ova

B. gametes

C. zygotes

D. sperm cells

10. A flowering plant carries its male gametes in the form of

A. Anthers

B. Pollen

C. Ova

D. Embryos

11. Biology uses the Linnaeus’ classification system to identify the species of an organism. From the list below, identify the correct classification order, from general to specific.

A. Kingdom, class, phylum, order, family, genus, species

B. Kingdom, class, order, family, phylum, genus, species

C. Kingdom, phylum, class, order, family, genus, species

D. Kingdom, phylum, family, class, order, genus, species

12. Which of the following questions is the most important one to ask when you are trying to determine if a change is chemical or physical?A. Has the colour changed?

B. Is a new substance produced?

C. Is heat or light given off?

D. Have bubbles of gas formed?

13. You are given four non-metals, all at room temperature. Three of the non-metals are in the solid state while one is a liquid. Which is the liquid?A. Oxygen

B. Bromine

C. Sulphur

D. Phosphorous

14. Phosphorous has a mass number of 31 and its atomic number is 15. How many neutrons are in an atom of phosphorous?A. 16

B. 15

C. 46

D. 31

15. The chemical formula for propane is C3H8. Which of the following accurately depicts the ratio of elements in this compound?A. 3 atoms of carbon, 8 atoms of helium.

B. 3 atoms of calcium, 8 atoms of helium.

C. 3 atoms of carbon, 8 atoms of hydrogen.

D. 3 atoms of chlorine, 8 atoms of hydrogen.

16. Hydrogen gas and zinc sulphate are produced from the reaction of zinc and sulphuric acid. Which word equation correctly represents this reaction?A. zinc + sulphuric acid zinc sulphate + hydrogen

B. hydrogen + sulphuric acid zinc + zinc sulfate

C. zinc sulphate + zinc sulphuric acid + hydrogen

D. zinc sulphate + hydrogen zinc + sulphuric acid

17. Exhaust from vehicles may form acid rain through the following reaction: nitrogen dioxide (NO2) from the engine mixes with water vapour (H2O) in the air to form nitric acid (HNO3) and nitrous acid (HNO2).What are the products in this reaction?A. Nitrogen dioxide and water vapour

B. Nitric acid and nitrous acid

C. Nitrogen dioxide and nitric acid

D. Water vapour and nitric acid

18. Underwater divers often carry sodium flares. A reaction between the sodium and the water causes the flare to glow brightly, allowing the diver to see. What type of reaction occurs between the sodium and the water?A. A chemical change in which energy is absorbed.

B. A physical change in which energy is released.

C. A chemical change in which energy is released.

D. A physical change in which energy is absorbed.

19. Magnesium combines with chlorine to form an ionic compound. What is the correct name of this compound?A. magnesium chlorine

B. magnesium chloride

C. magnesium chlorate

D. magnesium chlorite

To help identify substance X, Mark listed four properties:

I) reacts with acid to form bubblesII) appears to be a white crystalIII) is soluble in waterIV) has a boiling point of 1465˚C

A chemistry poster indicated information on the number of particles in a newly discovered atom:

Protons Electrons Neutrons113 113 281


20. Determine how many of the properties were chemical and physical.A. 3 chemical, 1 physical

B. 2 chemical, 2 physical

C. 1 chemical, 3 physical

D. 4 chemical, 0 physical


Element Colour Melting Point (˚C)

Boiling Point (˚C)

Other properties

Lithium silvery 181 1342 reacts with waterMercury silvery 39 357 poor heat conductor

Tin silvery 232 2602 Malleable, ductileSodium silvery 98 883 reacts with water

Iron grey 1538 2861 reacts with moist air

21. Based on similar characteristics, a student decided to put these two elements in the same groupingA. lithium, mercury

B. sodium, iron

C. sodium, tin

D. lithium, sodium


22. According to the information in the poster, the atomic number of the atom isA. 113

B. 226

C. 394

D. 507

1) temperature2) atomic mass3) enzyme4) acid5) surface area6) malleability7) concentration of reactants8) metalloid9) concentration of products

23. Iron combines with oxygen to form iron(II) oxide. Sometimes iron combines with oxygen to form iron(III) oxide. What is the main difference between iron(II) and iron(III)?A. charge of the iron ion

B. number of protons in the iron atom

C. placement of the iron atom in the periodic table

D. size of the iron atom


Numerical Response 3. The rate of a chemical reaction may be increased using _______, ______, ______, and _______ .


24. K3P is an ionic compound made from the elements: potassium and phosphorus. K3P is the formula for:A. potassium phosphide

B. potassium phosphorus

C. potassium phosphite

D. potassium phosphate

25. The molecular compound, ammonia, is made up of three hydrogen atoms attached to one ____ atom.A. chlorine

B. sulfur

C. nitrogen

D. oxygen

26. Marble buildings are affected by acid rain. Calcium chloride, carbon dioxide, and water are products formed when marble (CaCO3) reacts with the acid. The equation that describes this reaction is:

A. CaCl2 + H2O CaCO3 + 2HCl + CO2B. H2O + 2HCl CaCl2 + CO2 + CaCO3C. CaCO3 + 2HCl CaCl2 + H2O + CO2D. CaCO3 + H2O CaCl2 + 2HCl + CO2

27. Combustion, corrosion, and cellular respiration are chemical reactions that have one thing in common. These reactions all requireA. a source of energy.

B. oxygen.

C. carbon dioxide.

D. Water.

28. A gardener requiring a bag of fertilizer was puzzled by the number that appeared on the label:

He asked the sales clerk about the high second number on the label. The clerk replied that the 51 represented the percent of _____________ in the composition.

A. phosphorus

B. potassium

C. sulfur

D. nitrogen

29. All organic compounds have the element ___________ in their structure.A. hydrogen

B. carbon

C. nitrogen

D. oxygen

30. By measuring the pH of several chemical substances, you are actually measuring the concentration of ___________ ions in the solution.A. oxygen

B. nitrogen

C. carbon

D. hydrogen

31. If phosphorous concentration and nitrogen concentration increase in a lake,A. dissolved oxygen increases

B. the variety of life increases

C. bacteria grow and consume dissolved oxygen

D. fish and insects may thrive

Fast Grow

8 – 51 - 16

32. To study the effect of campground activity on soil pH, an environmental scientist took soil samples from four different sites before, during, and after the activities. The chart shows the data collected.

Site Before During After1 7.6 7.1 6.42 7.8 7.5 6.93 7.4 7.1 6.94 7.2 7.1 7.0

The environmental scientist concluded that the activity in the camp caused the soil to become more:A. neutral

B. acidic

C. polluted

D. basic

33. Living organisms are compared in two ponds with different water pH levels. Pond A has a pH of 6.8 and Pond B has a pH of 4.2. Pond B most likely hasA. fewer organisms and a greater diversity of species

B. more organisms and a lower diversity of species

C. more organisms and a greater diversity of species

D. fewer organisms and a lower diversity of species

34. A solute of 0.006 mL volume is present in a final solution of 1000 mL volume. What is the concentration of the solute?A. 6 ppm

B. 0.006 ppm

C. 60 ppm

D. 1000 ppm

35. The enhanced greenhouse effect refers toA. formation of “holes” in the upper ozone layer

B. growth of plants in an area like the desert

C. release of chlorofluorocarbons into the atmosphere

D. release of gases like carbon dioxide into the atmosphere

36. If a lead battery is buried in a landfill that is sanitary, what is the most likely result?A. Contamination of nearby streams with lead.

B. Surrounding soil becomes dry because the battery absorbs water.

C. No harm will come to the environment.

D. Acid rain will begin to occur over the landfill.


37. The results of this graph suggest that sulfur dioxide levelsA. are higher in mid-winter that in mid-summer

B. have risen from 1997 to 1999

C. have remained constant over the years shown

D. have continually decreased from 1997 to 1999

38. The soil of a cornfield has become contaminated by mercury, an element from the periodic table. The most effective approach to clean up the soil is toA. immediately remove the crop and wait until the next growing season to start again

B. remove the crop and expose the field to as much light as possible

C. unleash a strain of anaerobic bacteria to clean up the field

D. continue to let the crops grow and have them removed the end of the season

Sulfur dioxide is a gas produced by industrial processes involved in the coal and gas industry. The graph below represents data of sulfur dioxide levels measured in Calgary, Alberta between 1997 and 1999.

39. The town of Redwater, Alberta wants to construct a composting facility to reduce the amount of organic wastes being dumped at the local landfill site. The town has hired a student from a local college to determine ideal conditions for quick composting of leaves and grass cuttings, the primary materials to be composted. In her research, the student came across the following experimental data. The table shows the percent of decomposition of materials at various temperatures after four months in a composter.

Material 10C 25C 40C 55Cegg shells 10% 15% 17% 18%grass clippings 13% 19% 38% 27%leaves 14% 21% 42% 44%vegetable peelings 10% 16% 26% 29%

According to the data, what temperature should the composting facility be set to compost the most grass clippings and leaves?A. 10C

B. 25C

C. 40C

D. 55C

40. Atmosphere carbon dioxide levels have been recorded at Mauna Loa, a mountain in Hawaii since 1960. Results indicate that carbon dioxide levels have increased at a constant rate from 1960 to 2000. Which graph below illustrates this trend?

A B

CD


41. According to the data in both graphs, approximately what average June temperature results in the greatest numbers of mosquitoes?A. 52C

B. 30C

C. 22C

D. 12C

An environmental monitoring company has been hired to determine the relationship between early summer temperatures, precipitation, and mosquito numbers in an area. The company collected data for the month of June dating back 20 years. The two graphs below summarize the data collected:

Use the diagram below to answer the following question.

42. Your teacher gives you a small electrical cell, which he has found in his desk drawer. He asks you to determine its voltage by hooking it up to a voltmeter. When you connect the cell to the voltmeter, it gives you a reading shown in the diagram above. What is the reading of the voltmeter in volts?A. 0.0155 V

B. 0.155 V

C. 1.55 V

D. 15.5 V

43. While watching the news one night, you see a commercial for a new vehicle that will be powered by water. This will be accomplished by passing electricity through water, producing pure oxygen and pure hydrogen. These two gases will then be mixed together and ignited. This process of passing electricity through a substance to separate molecules is called:A. electrochemistry

B. electrorefining

C. electroplating

D. electrolysis

44. If you wanted to design a light bulb that produces a bright light using a small amount of current, which material would best serve this purpose?A. filament with no resistance

B. filament with low resistance

C. filament with high resistance

D. filament with complete resistance

45. Flowing water is often used as a model for voltage and current flowing through a wire. Which example would be used to model a wire with the greatest voltage and current?A. water flowing through a pipe with a 10-cm opening from a water tower 50 m above ground level

B. water flowing through a pipe with a 10-cm opening from a fountain 1 m above ground level

C. water flowing through a pipe with a 5-cm opening from a water tower 50 m above ground level

D. water flowing through a pipe with a 5-cm opening from a fountain 1 m above ground level


46. A technician has four samples of distilled water and wants to determine which sample is the purest by measuring the conductivity of each. Using the results in the table above, determine which sample is the most pure.A. Sample 1

B. Sample 2

C. Sample 3

D. Sample 4

Use the table below to answer the following numerical response question.

Numerical Response 4. An electric motor depends on several different components to convert electrical energy into mechanical

energy. The table above contains four components that are found in an electric motor. Match each term number with its proper function in the electric motor.

_____ a split ring that breaks the flow of electricity and then reverses the connection to the power source_____ bars, usually made of carbon, that connect the energy source to the moving parts of the electric

motor_____ wire found inside the electric motor that acts as an electromagnet when electricity is passed

through the wire_____ a solid rotating shaft found inside the motor


47. In order to construct a working electric motor, a permanent magnet and an electromagnet must interact. To keep the motor spinning, the current passing through the electromagnet must change directions after each half turn. The parts inside an electric motor that allow the current to change direction are theA. armature and brushes.

B. commutator and brushes.

C. armature and commutator.

D. electromagnet and permanent magnet.

Use the diagram below to answer the following question.

48. In the circuit shown above, the energy source is a:A. battery consisting of 3 cells

B. battery consisting of 6 cells

C. cell consisting of 3 batteries

D. cell consisting of 6 batteries

49. An electric motor works as a result of the interaction ofA. two electromagnets.

B. two magnetic coils.

C. two permanent magnets.

D. a permanent magnet and an electromagnet.

50. Your family is deciding on the type of heating system to install in your new home. You decide to install a mid-efficiency natural gas furnace because it is the least expensive to install, and 80% efficient. Being 80% efficient means that the furnaceA. converts 80% of the input energy into usable thermal energy.

B. converts 80% of the output energy into usable thermal energy.

C. converts 20% of the input energy into usable thermal energy.

D. converts 20% of the output energy into usable thermal energy.

Numerical Response 5. Determine if each of the energy sources below refer to renewable or non-renewable energy.

If the energy source is renewable, put the number 1 in the correct spot below. If the energy source is non-renewable, put the number 2 in the correct spot below:

_____________ _____________ _____________ _____________ coal forests natural gas solar energy



51. Some electrical devices require the operator to vary the amount of electricity that passes through the circuit. Of the devices shown in the diagram above, which can adjust the amount of electricity passing through an electrical device?A. I

B. II

C. III

D. IV

52. In science class, you learned that approximately 20% of the world's electricity is produced by hydro-electric generators. In order to be practical, these generators must be placed across rivers with large volumes of water passing through them. How does a hydro-electric generator produce electricity?A. A hydro-electric generator produces electricity via chemical reactions involving water

B. A hydro-electric generator splits the atoms of water particles to produce electricity

C. A hydro-electric generator converts the energy of flowing water into electricity

D. A hydro-electric generator converts the energy of heated water into electricity

53. Because the distances in space are so extremely large, kilometers are meaningless. Astronomers use a unit called a light year. Which of the following describes a light year?A. A light year is the speed that light travels in a year.

B. A light year is the distance that light travels in one year.

C. A light year is the actual speed of light measured from Earth.

D. A light year is the amount of time it takes sunlight to reflect off a distant body in space.

54. A star is a glowing hot ball of gas that gives off light and heat. What is the most common element making up this ball of gas?A. oxygen

B. helium

C. xenon

D. hydrogen

Use the Hertzsprung-Russell diagram below to answer the next two questions.

55. Where on the Hertzsprung-Russell diagram would you expect to find a "main sequence" star like our Sun?A. W

B. X

C. Y

D. Z

56. Referring to the Hertzsprung-Russell diagram, which of the following best describes a blue coloured star of the main sequence?A. small and cool

B. large and cool

C. large and hot

D. average size and average temperature

Bri

ghtn

ess

57. A small rock that travels through space and hits our planet's surface is referred to as a:A. shooting star

B. meteoroid

C. meteor

D. meteorite

58. One of the measurements used to locate objects in the sky is compass direction. The compass direction measured clockwise from north is called:A. equinox

B. azimuth

C. horizon

D. observation

59. The height of an object above the horizon can be measured using a:A. ruler

B. compass

C. astrolabe

D. cross-staff

60. The main reason for using solar sails to propel spacecraft is to increase the spacecraft'sA. mass

B. size

C. speed

D. fuel consumption

61. Telescopes located in space have an advantage over telescopes located on Earth because theyA. can be controlled remotely.

B. are sensitive to gamma rays.

C. are not affected by gravity.

D. do not have their view affected by atmosphere.

62. How many lenses are found in a typical refracting telescope?A. 2

B. 3

C. 4

D. 8

63. If star X has a greater blue-shift than star Y, we conclude that star x isA. moving away from Earth faster than star Y.

B. moving toward Earth faster than star Y.

C. moving toward star Y.

D. moving away from star Y.

64. When astronomers use a spectroscope, the resulting spectra have black lines present. These black lines indicate theA. age of the star.

B. colour of the star.

C. elements in the star.

D. distortion caused by Earth's atmosphere.

65. In the debate over whether to explore space and utilize the resources found there, ethical questions arise. Which of the following best illustrates an ethical issue?A. Who gets the money from space materials?

B. Is it right or wrong morally to explore space?

C. Which country should get to claim space as their property?

D. Who should clean up any space junk left in space?

Part B: Numerical Response / 5

Write in the three-digit or four-digit answer for each question. Shade in the circle that corresponds to each number.

1 2 3

4

5

msnielsencoursessite.weebly.commsnielsencoursessite.weebly.com/uploads/1/3/5/8/13589317/... · web...

Documents