2012-2013 gr8 science extend2 released · a anemometer b graduated cylinder ... c electronic...

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Academic Services and Instructional SupportDivision of Accountability Services

READY

End-of-Grade

Alternate Assessment

Science

NCEXTEND2

Student Booklet

Grade 8

Released Form

RELEASED

NCEXTEND2 GRADE 8 SCIENCE—RELEASED FORM

1

Sample Questions S1 What is the first thing a student should do if an accident happens during a science

experiment?

A Report to the teacher.

B Clean the laboratory station.

C Locate the nearest exit.

S2 Which device is used to determine the volume of a liquid?

A anemometer

B graduated cylinder

C test tube

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2 Go to the next page.

1 Which is an example of a compound?

A air

B gold

C water

2 Which characteristic do halogens and noble gases have in common?

A Both are highly reactive metals.

B Both are nonmetals.

C Both are highly reactive nonmetals.

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3 Why does a balanced chemical equation support the Law of Conservation of Mass?

A because the total mass of the products is greater than the mass of the reactants

B because the total mass of the reactants is less than the mass in the products

C because the total mass of the reactants equals the total mass of the products

4 Which source of energy causes the most air pollution?

A wind

B oil

C solar

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5 Which will most likely be the result if sources of energy other than oil are not

developed in the future?

A Energy prices will increase because there will be less oil available for use.

B Energy prices will decrease because there will be more oil available for use.

C Energy prices will remain the same because there is an unlimited supply of oil available for use.

6 Which are bioindicators in a stream?

A rocks and sand

B frogs and lizards

C water and temperature

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7 What will most likely happen to the fossil record if an unconformity occurs?

A The geologic record would be expanded.

B The geologic record would be shortened.

C There would be a gap in the geologic record.

8 Which provides the best evidence that climates on Earth have changed?

A metamorphic rock

B gases trapped in glaciers

C deep ocean currents

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9 This paper-and-pencil version of the assessment cannot display items available

only online.

10 Which agency in the United States is responsible for developing water quality standards?

A Centers for Disease Control

B National Oceanic and Atmospheric Administration

C Environmental Protection Agency

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11 How can biotechnology help farmers overcome sudden changes in the

environment?

A by developing crops which are resistant to winter weather

B by changing the types of soil where the crops are planted

C by rotating the crop within the same field

12 Instead of using chemicals to destroy some insects, scientists are now able to produce a type of corn that will repel insects. How are scientists able to produce this type of corn?

A by not spraying the corn plants

B by soaking corn seeds in insect spray

C by changing the genetics of the corn plants

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13 A hawk catches a mouse. What does the hawk represent?

A predator

B producer

C prey

14 Birds of the same species with different types of beaks live on the Galapagos Islands. Which is the best explanation as to why these birds have different types of beaks?

A Different types of beaks allow the birds to better defend their territory.

B Different types of beaks allow the birds to attract more mates.

C Different types of beaks allow the birds to eat different types of food.

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15 What would cause some bacteria to remain alive when exposed to an antibiotic?

A They are larger than the other bacteria.

B They have different genetic variations than the other bacteria.

C They are able to reproduce faster than the other bacteria.

16 How do plants and animals get the food their cells need for energy?

A Plants produce their own food, while animals eat other animals or plants.

B Plants absorb their food through their roots, while animals produce their own food.

C Plants get their food by changing carbon dioxide in the atmosphere to carbon, while animals get their food through photosynthesis.

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17 Which is an example of an element?

A air

B lead

C salt

18 Which remains the same during a chemical reaction?

A the temperature of the elements

B the total number of atoms

C the total number of compounds

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19 Which is the best reason to conserve the natural resources of Earth?

A to make sure they are available for future generations

B to make sure their cost remains low

C to make sure they can be recycled

20 In which ocean zone is the greatest number of producers found?

A deep zone

B transition zone

C surface zone

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21 Why are large numbers of fish usually found in areas of upwelling?

A There is a large amount of food in those areas.

B There is less oxygen in the waters of those areas.

C There are fewer predators living in those areas.

22 Which will most likely result if hot water is continually dumped into a stream?

A Nitrate levels in the stream will increase.

B Dissolved-oxygen levels in the stream will decrease.

C Phosphorus levels in the stream will decrease.

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23 Why is chlorine added to swimming pools?

A to kill bacteria in the water

B to make the water blue

C to make the water taste better

24 Which statement is true about undisturbed layers of rocks on the side of a mountain?

A The rock layers closest to ground level have more fossils than in the top layers.

B The layers of rocks closest to ground level are older than the layers at the top.

C The layers of rocks that are the darkest in color are older than those that are lighter.

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25 Which is true about the continents of the world?

A They have the same climate.

B They are slowly moving along tectonic plates.

C They are all near the equator.

26 Which is a treatment for bacterial diseases?

A penicillin pills

B antiseptic soap

C alcohol wipes

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27 What is the best way people can avoid diseases caused by viruses?

A taking aspirin

B injecting antibiotics

C getting vaccinated

28 Which would least likely influence global climate changes?

A producing energy using hydroelectric plants

B producing energy using coal

C producing energy using oil

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29 Foxes often prey on rabbits for food. If all of the foxes are taken from the

environment, what will most likely happen to the population of rabbits?

A The population of rabbits will be the same.

B The population of rabbits will increase.

C The population of rabbits will decrease.

30 Which best determines the number of wolves that can live in an area?

A the amount of snow in the area each year

B the amount of food in the area for the wolves

C the number of trees in the area

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31 Based on the fossil records, what is true concerning populations of organisms that

lived on Earth?

A Most organisms are found in the earliest rock layers.

B Most organisms stayed the same over time.

C Most organisms that lived on Earth are extinct.

32 Which foods provide the healthiest nutrients and assist in good digestion?

A grilled chicken and a salad

B hamburger and fries

C chicken nuggets and mashed potatoes

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33 Which element has properties of both metals and nonmetals?

A Calcium (Ca)

B Iron (Fe)

C Silicon (Si)

34 This paper-and-pencil version of the assessment cannot display items available only online.

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35 What would most likely happen if wind and solar energy were used instead of

burning coal and oil?

A Air temperatures would rise.

B Erosion of soil would decrease.

C The air would become less polluted.

36 How does the use of renewable energy affect nonrenewable energy resources?

A Using renewable energy sources causes nonrenewable energy to cost more.

B Using renewable energy sources increases the need for coal mining.

C Using renewable energy reduces the demand for nonrenewable energy resources.

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37 What is one way to reduce ocean pollution?

A prevent fishing in the ocean

B drink only bottled water and other drinks

C stop dumping waste products in the ocean

38 Which would best indicate that lake water may be unsafe to drink?

A the kinds of microorganisms living in the lake

B the temperature of the lake water

C the presence of fish in the lake

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39 Which best helps scientists to estimate the age of Earth?

A using index fossils

B using relative dating of sedimentary rocks

C using radioactive dating of rocks

40 How do scientists know that some mountains were once at the bottom of an ocean?

A Freshwater rivers flow from the mountains to the ocean.

B Saltwater fish live in some mountain streams.

C Marine fossils have been found on the peaks of some mountains.

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41 Which is a product of biotechnology?

A video surveillance cameras

B oil-eating bacteria

C electronic communications devices

42 Which scientific field is responsible for developing vaccinations against infectious diseases?

A biotechnology

B cardiology

C kinesiology

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43 How does water availability affect population size?

A An increase in water availability leads to an increase in population size.

B A decrease in water availability leads to an increase in population size.

C An increase in water availability leads to a decrease in population size.

44 Which is an example of a decomposer?

A grass

B worm

C cow

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45 Which characteristic would provide the best evidence that species of living crabs

and lobsters are related to extinct trilobite species?

A similar body structures

B similar habitats

C similar body size

46 Which statement best describes most of the species that have lived on Earth?

A Their habitats were located in the desert.

B They still exist on Earth in their original forms.

C They are no longer living on Earth.

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47 Which best describes why sunlight is important for the survival of green plants?

A It is required for photosynthesis in green plants.

B It is required for absorption of minerals by green plants.

C It is required for production of roots by green plants.

48 Which best explains the process of digestion?

A The body uses energy to make food.

B The body breaks down food to provide nutrients.

C The body breathes air in to supply oxygen to the lungs.

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26

Directions: This is the end of the science test.

1. Put all of your papers inside your test book and close your test book.

2. Place your calculator on top of the test book.

3. Stay quietly in your seat until your teacher tells you that testing is finished.

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2012-2013 gr8 science extend2 released · a anemometer b graduated cylinder ... c electronic...

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