RELEASED. Spring 2013 North Carolina Measures of Student Learning: NC s Common Exams. Grade 7 Science Form A

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1 Released Form Spring 2013 North arolina Measures of Student Learning: N s ommon Exams Grade 7 Science Form RELESE Public Schools of North arolina State oard of Education epartment of Public Instruction Raleigh, North arolina Student ooklet opyright 2013 by the North arolina epartment of Public Instruction. ll rights reserved.

2 G RE 7 SIENE RELESE F ORM 1 Steven threw four balls into the air and recorded their heights. The chart below shows the maximum height for each ball. Which describes their motion? Maximum Height Reached by Four alls all Maximum Height (m) M 2.0 N 1.5 O 4.2 P 3.0 all P went twice as high as all N. all M went twice as high as all N. all P went two meters higher than all O. all N went two meters higher than all O. 2 John wants to build a racetrack that will allow his toy cars to travel fast when force is applied. Which material should he use? carpet, because friction will be high gravel, because friction will be high RELESE plastic, because friction will be low sandpaper, because friction will be low 1 Go to the next page.

3 G RE 7 SIENE RELESE F ORM 3 magnet is placed near a pile of steel paper clips. Which will most likely occur? The magnet will provide a balanced force, causing the paper clips to spin in circles. The magnet will provide an unbalanced force, keeping the paper clips stationary. The magnet will provide a balanced force, pushing the paper clips away from it. The magnet will provide an unbalanced force, pulling the paper clips toward it. 4 The graph below shows the distance traveled by an object over 100 seconds. istance (m) V 10 W istance vs. Time What happened to the motion of the object between t = 50 s and t = 70 s? X Z Time (s) RELESE Y The object increased its speed. The object decreased its speed. The object stopped moving. The object changed directions. 2 Go to the next page.

4 G RE 7 SIENE RELESE F ORM 5 Which graph represents a moving object with a constant speed throughout its entire travel time? istance (meters) istance (meters) Time (seconds) Time (seconds) istance (meters) istance (meters) Time (seconds) Time (seconds) RELESE 3 Go to the next page.

5 G RE 7 SIENE RELESE F ORM 6 The diagram shows a 21.7-kg ball located on a shelf 1.6 m above the ground kg 1.6 m Which best describes the energy of the ball? Its energy is lost once it falls off the shelf. Its energy depends upon the speed the ball will travel. It has mechanical energy in the form of potential energy. It has mechanical energy in the form of kinetic energy. RELESE 4 Go to the next page.

6 G RE 7 SIENE RELESE F ORM 7 This diagram shows the motion of a ball down a hill What happened to the ball s energy from Point 1 to Point 4? Stored energy was transformed into energy of motion. Energy of motion was transformed into chemical energy. Stored energy in the ball applied a force to get the ball to move. Internal energy caused the ball to move until the energy was gone. 8 s a roller coaster car travels down a hill, which type of change in energy allows it to speed up? potential energy changing into heat energy RELESE 4 potential energy changing into kinetic energy kinetic energy changing into heat energy kinetic energy changing into potential energy 5 Go to the next page.

7 G RE 7 SIENE RELESE F ORM 9 Which form of energy does a car s engine convert into mechanical energy? light wind chemical gravitational 10 Which type of energy is changed by plants into chemical energy? solar nuclear thermal gravitational 11 How can an inclined plane make work easier? by increasing the amount of friction necessary for the task by increasing the effort necessary to raise an object by decreasing the effort required to raise an object RELESE by decreasing the efficiency of the task 6 Go to the next page.

8 G RE 7 SIENE RELESE F ORM 12 Which simple machine would be the most efficient for lifting an object 30 m off the ground? pulley screw wedge lever RELESE 13 Why does air pressure decrease from the troposphere to the exosphere? because there are fewer air molecules as altitude increases because there are more air molecules as altitude increases because there are higher temperatures as altitude increases because there are lower temperatures as altitude increases 14 How does the temperature of the stratosphere compare to the mesosphere? It is colder than the mesosphere because the stratosphere contains the ozone layer. It is warmer than the mesosphere because the stratosphere contains the ozone layer. It is colder than the mesosphere because the stratosphere contains the ionosphere. It is warmer than the mesosphere because the stratosphere contains the ionosphere. 7 Go to the next page.

9 G RE 7 SIENE RELESE F ORM 15 Which occurs within a high-pressure system? the formation of tornadoes the formation of hurricanes large clouds, as air rises calm weather, as air sinks 16 The data table below shows the weather conditions for ity X over the course of one day. Weather onditions for ity X ay and Time Tuesday at 8:00 a.m. Tuesday at 2:00 p.m. Temperature 60 F 40 F Pressure in in. winds Southwest Northwest skies Partly loudy loudy; Rain and Thunder What has most likely occurred in this area? warm front has passed. cold front has passed. blizzard has taken place. RELESE high-pressure system has stalled. 8 Go to the next page.

10 G RE 7 SIENE RELESE F ORM 17 The chart below shows the recorded temperatures in a city for several days at the same time. Four-ay Temperature Recordings at 3:00 p.m. ay Temperature ( F) Thursday 59 Friday 63 Saturday 72 Sunday 64 On which day could the air have held the greatest amount of water vapor at 3:00 p.m.? Thursday Friday Saturday Sunday 18 How does the convection of air produce thunderstorms? by causing warm air to sink and cold air to rise by causing warm air to rise and cold air to sink RELESE by causing both warm air and cold air to rise by causing both warm air and cold air to sink 19 Which best explains how the oriolis effect influences weather conditions? It causes winds to rotate, forming tornadoes on Earth. It causes winds to move to the right in the southern hemisphere. It causes winds to turn to the right in the northern hemisphere. It causes winds to follow a straight line path around Earth. 9 Go to the next page.

11 G RE 7 SIENE RELESE F ORM 20 Why is it important for the United States to monitor air pollution levels in other countries? ir pollution can improve the ozone layer amounts in the atmosphere. ir pollution can travel to the United States and affect people s health. The United States is the only country able to monitor the air quality. The United States has clean air and is able to help other countries. 21 The illustrations below are of a euglena, a paramecium, and an amoeba. How do these organisms compare? They use different structures for movement. RELESE They use different structures to control cell activity. They all make their own food by photosynthesis. They all have eyespots to sense sunlight. 10 Go to the next page.

12 G RE 7 SIENE RELESE F ORM 22 This is a diagram of a plant cell. mitochondrion 1 vacuole 2 nucleus 3 4 chloroplast Which organelle is used to transfer energy and can also be found in an animal cell? RELESE 23 The cell membrane is unable to work properly. How could this affect plant and animal cells? It could affect their ability to absorb sunlight. It could affect their ability to make proteins. It could affect their ability to store water. It could affect their ability to remove waste. 11 Go to the next page.

13 G RE 7 SIENE RELESE F ORM 24 Which best summarizes organ systems? a group of organelles working together to perform a certain job a group of tissues working together to perform a certain job a group of organs working together to perform a certain job a group of cells working together to perform a certain job 25 Which function summarizes the excretory system? It removes waste. It collects oxygen. It attacks diseases. It delivers nutrients. 26 How do the respiratory and circulatory systems work together? The respiratory system takes in carbon dioxide, while the circulatory system delivers carbon dioxide to the cells. The circulatory system takes in carbon dioxide, while the respiratory system delivers carbon dioxide to the cells. RELESE The respiratory system takes in oxygen, while the circulatory system delivers oxygen to the cells. The circulatory system takes in oxygen, while the respiratory system delivers oxygen to the cells. 12 Go to the next page.

14 G RE 7 SIENE RELESE F ORM 27 scientist noticed that all of the offspring of the yeast fungus are identical to the parent. However, the offspring of a cat all look different. What most likely caused this to occur? Yeast produced offspring through asexual reproduction, while the cat produced offspring through sexual reproduction. Yeast produced offspring through sexual reproduction, while the cat produced offspring through asexual reproduction. oth yeast and the cat produced offspring through asexual reproduction. oth yeast and the cat produced offspring through sexual reproduction. 28 How does mitosis compare to meiosis? Mitosis produces two identical daughter cells, while meiosis produces sex cells with half the genetic information. Mitosis produces sex cells with half the genetic information, while meiosis produces two identical daughter cells. Mitosis only occurs in single-celled organisms, while meiosis only occurs in animals. Mitosis only occurs in animals, while meiosis only occurs in single-celled organisms. RELESE 13 Go to the next page.

15 G RE 7 SIENE RELESE F ORM 29 Sarah s family has a long history of people who developed diabetes. Which lifestyle change should she make to try to prevent becoming diabetic? watch television and drink water exercise frequently and watch her diet play video games and sit on the couch drink sodas daily and eat fried foods 30 How does smoking cigarettes affect the body? It causes damage to various cells. It improves the function of the lungs. It lowers carbon dioxide amounts. It reduces the chance of cancer. This is the end of the multiple-choice portion of the test. RELESE 14 Go to the next page.

16 G RE 7 SIENE RELESE F ORM The questions you read next will require you to answer in writing. 1. Write your answers on separate paper. 2. e sure to write your name on each page. 1 The motion of an object can be represented in a line graph. The data table below charts the motion of an object in 20 seconds. istance vs. Time Time istance (s) (m) onstruct a line graph that shows the motion of the object. e sure to label both axes. Using the graph, describe the motion of the object between 0 and 10 seconds. RELESE 2 Runoff is an important part of the water cycle. What is the final destination for runoff that flows on the surface of the continents? How can the runoff water contribute to the weather in an area? 15 Go to the next page.

17 G RE 7 SIENE RELESE F ORM 3 In rabbits, black fur () is dominant to brown fur (b). Give the genotype of a heterozygous black rabbit. If a heterozygous black rabbit and a brown rabbit were crossed, what is the probability that their offspring will be brown? Show your work. RELESE 16 Go to the next page.

18 G RE 7 SIENE RELESE F ORM This is the end of the Grade 7 Science test. 1. Look back over your answers. 2. Put all of your papers inside your test book and close the test book. 4. Stay quietly in your seat until your teacher tells you that testing is finished. RELESE 17

19 G RE 7 SIENE RELESE F ORM Grade 7 Science RELESE Form Spring 2013 nswer Key Item number Type Key Unifying oncept 1 M Forces and Motion 2 M Forces and Motion 3 M Forces and Motion 4 M Forces and Motion 5 M Forces and Motion 6 M Energy: onservation and Transfer 7 M Energy: onservation and Transfer 8 M Energy: onservation and Transfer 9 M Energy: onservation and Transfer 10 M Energy: onservation and Transfer 11 M Energy: onservation and Transfer 12 M Energy: onservation and Transfer 13 M Earth Systems, Structures and Processes 14 M Earth Systems, Structures and Processes 15 M Earth Systems, Structures and Processes 16 M Earth Systems, Structures and Processes 17 M Earth Systems, Structures and Processes 18 M Earth Systems, Structures and Processes 19 M Earth Systems, Structures and Processes 20 M Earth Systems, Structures and Processes 21 M 22 M RELESE Structures and Functions of Living Organisms Structures and Functions of Living Organisms 1

20 G RE 7 SIENE RELESE F ORM Item number Type Key Unifying oncept 23 M 24 M 25 M 26 M Structures and Functions of Living Organisms Structures and Functions of Living Organisms Structures and Functions of Living Organisms Structures and Functions of Living Organisms 27 M Evolution and Genetics 28 M Evolution and Genetics 29 M Evolution and Genetics 30 M Evolution and Genetics 31 R Rubric Forces and Motion 32 R Rubric Earth Systems, Structures and Processes 33 R Rubric Evolution and Genetics Item Types: M = multiple choice R = constructed response RELESE 2

RELEASED. NC Final Exam. Grade 7 Science. Released Items. Student Name:

RELEASED. NC Final Exam. Grade 7 Science. Released Items. Student Name: Released Items Student Name: Grade 7 Science 2016 2017 Public Schools of North arolina State oard of Education epartment of Public Instruction Raleigh, North arolina 27699-6314 RELESE N Final Exam opyright