These science questions have been taken from the following state and regional science exams in the United States: AIMS-Arizona's Instrument to Measure Standards, Alaska Department of Education & Early Development, California Standards Test, MCAS-Massachusetts Comprehensive Assessment System, Maryland School Assessment, MEA-Maine Educational Assessment, MEAP-Michigan Educational Assessment Program, NAEP-National Assessment of Educational Progress, North Carolina End-of-Grade Assessment, New York State Educational Department Regents exams, Ohio Achievement Tests, TAKS-Texas Assessment of... Show more

These science questions have been taken from the following state and regional science exams in the United States:
AIMS-Arizona's Instrument to Measure Standards, Alaska Department of Education & Early Development, California Standards Test, MCAS-Massachusetts Comprehensive Assessment System, Maryland School Assessment, MEA-Maine Educational Assessment, MEAP-Michigan Educational Assessment Program, NAEP-National Assessment of Educational Progress, North Carolina End-of-Grade Assessment, New York State Educational Department Regents exams, Ohio Achievement Tests, TAKS-Texas Assessment of Knowledge and Skills, Virginia Standards of Learning, & Washington MSP.

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Middle School Science Review (8th Grade, With Diagrams)

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25 Questions

1. The flowchart below represents the process of photosynthesis. One step in the process is labeled X.

Which activity occurs at X?

Carbon dioxide and water are used to make sugar.Plants release water into the soil.Animals breathe out carbon dioxide.Plants are eaten by animals for food.

2. Given this picture:

What is the name of the indicated atom in the acetic acid molecule shown above?

chromiumcoppercalciumcarbon

3. The diagram below shows information about the motion of a toy car between two points on a track.

Which of the following can be determined using the information shown in the diagram?

the car's position after the first two secondsthe car's average speed between the two pointsthe car's mass as it moves away from the startthe car

4. Two students are pushing a cart as shown below.

The cart will move as if it were acted on by a single force with a magnitude of

50 N.200 N.350 N.'150 N.

5. The picture below shows an analemma which appears as a fi gure eight. An analemma is produced by photographing the Sun’s position at noon from the same place throughout the year.

Which position indicates the time of year with the greatest amount of sunlight?

position Xposition Wposition Yposition Z

6. The top and bottom of each container below are labeled. Which model best represents the arrangement of gas molecules inside a sealed container as viewed from the side?

7. The diagram below shows a hammer being used by a person to remove a nail from a piece of wood.

The hammer is being used as which type of simple machine?

pulleyleverinclined planewheel and axle

8. The diagram below shows a human organ system.

Which human organ system is shown?

respiratorynervousdigestivecirculatory

9. Which of the following diagrams best represents the angle at which the Sun’s rays strike location X at noon on June 21?

10. The diagram below shows a model of a sample of gas particles at room temperature.

Which diagram best shows the results of removing heat from this sample until it freezes?

11. The satellite image below shows a natural feature on Earth’s surface. The feature is marked X on the image.

Which action most likely helped form feature X?

Land was exposed when water was pulled offshore during low tide.Sediments were deposited where the river met the ocean.Waves pushed mud from the bottom of the ocean onto land.Wind blew sand from the beach into large piles.

12. The diagram below shows a triple-beam balance.

What is the maximum mass in grams that could be measured by this balance?

6105001101510

13. The map below shows latitude and longitude lines for a portion of North America. Points A and B represent two cities.

Compared to the location of city A A the location of city B is at

1 week1 year1 day1 month

14. A marine food web is shown in the diagram below.

Which organism below belongs in level 3 of this marine food web?

polar bearzooplanktonsea algasalmon

15. Use the information below to answer the question.

Emmett has entered a ski competition held on Big Powderhorn Mountain. He must ski around four markers and cross a finish line at the bottom of the slope. He hopes to beat the record time on this course of 1 minute and 13 seconds (1:13). Emmett asks the manager at the ski resort about the length of the course. Which of the following units is most appropriate to use in reporting the length of the course?

centimeters. litersgramsmeters

16. A student is trying to determine if a certain beetle will help control the population of a harmful plant species. Which sequence of steps would be best suited for this investigation?

17. Which of the following diagrams best represents the size relationships among galaxies stars and the universe?

18. A diagram of the periodic table of the elements is shown below.

In which region of the table would nonmetals be found?

2134

19. The picture below shows a beaker containing a clear liquid with a temperature of 20°C.

A blue powder is added to the liquid. Which of the following pictures provides the best evidence that the change to the liquid is physical not chemical?

20. The illustration below represents two protists.

What do these two organisms have in common?

They cause diseases.They are unicellular.They are photosynthetic.They live underground.

21. The diagram below shows two magnets.

If the magnets are brought closer together they will

repel each other with a stronger forcerepel each other with a weaker forceattract each other with a weaker forceattract each other with a stronger force

22. The diagram below shows several organisms in a fish tank.

Which item in the tank produces oxygen?

plantsnailrockwater

23. A species of bird migrates from South America across the Atlantic Ocean to its summer breeding ground in northern Canada. The birds stop on the east coast of the United States to eat the eggs of horseshoe crabs. The migration route of these birds is shown on the map below.

Which of the following changes would most threaten this species of bird with extinction?

longer summers in North Americadecreased populations of horseshoe crabsincreased sizes of horseshoe crab eggsless rainfall in South America

24. The drawing below represents a pair of chromosomes.

The area labeled 'bands' shows the location of

sperm cellsspecific genesegg cellsreproductive hormones

25. Use the information below to answer the question. The picture below shows one possible food web for a Great Lakes ecosystem. Based on your understanding of ecosystem interactions answer the following questions.

The relationship between the small fish and invertebrates is best described as

predator – prey.producer – predator.consumer – decomposer.consumer – parasite.