A bat flies three kilometers. A scientist wants to find the bat’s speed. Which other information does the scientis

1. A bat flies three kilometers. A scientist wants to find the bat’s speed. Which other information does the scientist need? A. the bat’s starting position B. the bat’s mass while flying C. the direction the bat flies D. the amount of time the bat flies

2. Four shoppers are pushing identical shopping carts through a store at the same speed. Each cart contains a different object. Which cart will require the least force to stop its motion? A. the cart containing an object with a mass of 700 g B. the cart containing an object with a mass of 530 g C. the cart containing an object with a mass of 390 g D. the cart containing an object with a mass of 180 g

3. 3. A student observes and records changes in some materials. Which is an example of a new substance forming? A puddle of water evaporates. An iron nail rusts. An ice cream bar melts. A drinking glass breaks.

4. 4. Which diagram shows how energy from the sun changes water on Earth’s surface to produce runoff? A. Snow melts and flows as water. B. Water vapor condenses and freezes. D. Moisture evaporates, and clouds of water droplets form. C. Snow forms and falls.

5. Which is an example of heat being transferred by radiation? an ice cube melting in a hot bowl of soup sunlight warming a puddle of water a mug of hot coffee warming a person’s hands hot water moving from the bottom of a kettle to the top

6. 6. Spoons made of steel, wood, copper, and plastic are placed in a pot of hot water. Which spoon or spoons will most likely heat up easily? steel spoon steel and copper spoons steel, wood, and copper spoons D. steel, wood, and plastic spoons

7. When does heat stop flowing between two objects? when the objects reach the same temperature when one object gains enough heat to melt when one object loses enough heat to freeze D. when one object loses all of its heat

8. During January and February, which most likely helps keep weather mild along the coast of North Carolina? El Niño La Niña the Gulf Stream D. the jet stream

9. If a wind vane points south, which is the best conclusion? The wind is blowing toward the south. A storm is coming from the north. The wind is blowing from the south. D. The wind is increasing in speed.

10. 10. A girl is conducting an investigation in which she will predict the weather. Which tool will she most likely need? spring scale Barometer pan balance D. meterstick

11. Which best describes single-celled organisms, such as amoebas? They take in nutrients directly from their surroundings. They have body systems for transporting nutrients. They have tubes for transporting nutrients. D. They do not need nutrients.

12. Which is the smallest part of a mouse that can get rid of wastes? Atom Element System D. Cell

13. 13. Which of the human body systems is most responsible for taking in oxygen from the air? circulatory system respiratory system skeletal system D. muscular system

14. Which best compares lakes and oceans? Both are large bodies of freshwater. Both are large bodies of salt water. Only lakes include fish. D. Only oceans include corals.

15. 15. An organism gets the nutrients it needs by breaking down dead leaves. Which is the best way to classify the organism? as a producer as a decomposer as an herbivore D. as a consumer

16. 16. Which is a living part of both a grassland and a forest ecosystem? Soil pine tree Shrub D. rocks

17. 17. Which best explains why a population of cactuses in a desert all have bright red flowers? The population members got this trait from the desert ecosystem. The parents inherited this trait from their offspring. The offspring learned this trait from their parents. D. The offspring inherited this trait from their parents.

18. 18. In the table below, a student recorded different characteristics she observed. Which characteristic did the student record in the wrong column of the table? A. A dog knows how to sit on command. B. A goldfish knows how to swim. C. A woman can read German. D. An eagle has two legs.

19. 19. José and Sarah both leave school for the library at 3 p.m. José rides his bike at a speed of 16 kilometers per hour. Sarah rides her bike at a speed of 14 kilometers per hour. Which will most likely happen? They will ride in two different directions. José will arrive at the library before Sarah. Sarah will arrive at the library before José. D. They will arrive at the same time.

20. 20. A student forms a ball out of clay. Then he pushes the ball and observes its motion along his desk. If he repeats the activity, what should he do to make the ball move faster? change the ball’s starting position change the ball’s shape make the ball heavier D. push the ball harder

21. 21. In the water cycle, energy warms water on the surface of the Atlantic Ocean. Some of the water moves into the atmosphere. Which source of energy causes this change? the sun ocean waves Electricity D. Earth’s interior

22. 22. If a girl mixes 6 ounces of walnuts, 4 ounces of shredded coconut, and 8 ounces of raisins together, how much snack food will she have? 6 ounces 18 ounces 48 ounces D. 64 ounces

23. Which is an example of transpiration? Hail falls from the atmosphere onto a field. Cloud droplets form from water vapor in the air. A corn plant’s leaves release water vapor into the air. D. Dew drops on an oak leaf change to water vapor.

24. A small beaker of liquid is placed inside a large beaker of liquid. The temperature of the liquid in the small beaker begins to increase. Which is the best explanation for this change? A chemical change occurred between the two liquids. Radiation from the sun reached the small beaker. Heat flowed from the large beaker to the small beaker. Heat flowed from the small beaker to the large beaker.

25. Which object would best conduct thermal energy? silver spoon glass bottle wood bowl D. plastic cup

26. 26. Local weather changes daily. Which of these would not be part of a daily weather report? wind speed air pressure amount of precipitation D. location of the Gulf Stream

27. 27. Which type of weather will most likely result if a cold front approaches in the month of February? A. Thunderstorm sunny skies Snowstorm D. rising temperatures

28. 28. A student is conducting an investigation in which she observes and records weather conditions. If she observes high, wispy clouds that look a little like feathers, which should she record in her data table under “Clouds”? Fog Cirrus Stratus D. cumulus

29. 29. Which would most likely be the result after an injury to the muscular system of the human body? The body would not be able to move as easily. The body would not be able to carry blood to the heart. The body would not break down food as easily. D. The body would not be able to absorb nutrients.

30. Which best describes a human fat cell? It is an organism made up of only one cell. It is one of a group of cells that have a certain job. It is an organism made up of many cells. D. It is one of a group of cells that have many jobs.

31. Which best describes an ecosystem? all the living and nonliving things in an area all the organisms of the same kind in an area a large area, such as a forest D. a place where many organisms live

32. Which describes one way that energy is transferred in a food chain? from one producer to another producer from a consumer to a producer from a producer to a consumer D. from a producer to the sun

33. Eelgrass is a major source of food for birds and turtles in an estuary. What will most likely happen to the bird and turtle populations if people remove the eelgrass to build a bridge? The turtle population will increase, but the bird population will decrease. Both the bird population and the turtle population will increase. The bird population will increase, but the turtle population will decrease. D. Both the bird population and the turtle population will decrease.

34. 34. How do bacteria most likely affect birch trees in a forest? Bacteria add nutrients to soil that birch trees need. Bacteria help birch trees reproduce by spreading pollen. Bacteria provide energy that birch trees need. D. Bacteria help birch trees reproduce by spreading seeds.

35. 35. When a fern plant is placed near a window, the fern grows toward the sunlight. Where did the fern get this trait? from its location from the soil from its food D. from its parents

36. Which is an example of a learned behavior? A bear looks for food in the trash. A human baby cries. A tiger cares for its young. D. A blue jay eats seeds.

37. Which best explains why a certain horse has longer legs than its father? The horse inherited traits only from its mother. The horse learned different behaviors than its father. The horse acquired more traits during its lifetime. D. The horse inherited traits from both its parents.

38. 38. A student rolls a ball down a smooth wooden ramp and observes what happens. Then he puts sandpaper on the ramp and rolls the ball again. What is the student most likely investigating? the effect of a change in gravity on the ball’s motion the effect of a change in mass on the ball’s motion the effect of a change in friction on the ball’s motion D. the effect of a change in a ball’s motion on the ramp

39. Which is the best way to use the x-axis on a distance-time graph? to represent the position of an object that travels to represent the period of time that an object travels to represent the speed at which an object travels D. to represent the distance that an object travels

40. Which process describes water flowing downhill over the land surface? Precipitation Transpiration Runoff D. condensation

41. An orange is cut into four equal parts. Each part weighs 2.5 ounces. How much did the orange weigh before it was cut? 2.5 ounces 5 ounces 10 ounces D. 40 ounces

42. 42. A student is investigating how water changes from a liquid to a solid. Which information would be best for the student to record in a data table? A . changes in the water’s temperature changes in the water’s weight changes in the water’s shape D. changes in the water’s color

43. 43. Michael measures the temperatures of copper, silver, steel, and gold wires before and after placing them in hot water. Which idea is Michael most likely testing in his investigation? A . Many types of materials besides metals are good conductors. Many types of metals are good conductors. Copper is a better conductor of heat than plastic. D. Plastic is a better conductor than gold.

44. A pot of soup heats on a hot plate. Which occurs as a result of convection? Heat gets transferred to the pot. Heat gets transferred to the pot and some of the soup. Heat gets transferred throughout the soup. D. Heat gets transferred to the hot plate.

45. 45. On Tuesday, the weather is cold and cloudy. On Wednesday, the weather is sunny and warm. Which change most likely occurred from Tuesday to Wednesday? from high to low temperature from low to high air pressure from low to high wind speed D. from low to high precipitation

46. 46. Which best explains why the area near the North Pole tends to be colder all year than areas at lower latitudes? The North Pole is in a temperate zone. Areas in lower latitudes are farther from the ocean. Polar zones get the least energy from the sun. D. Polar zones get less snow than temperate zones.

47. 47. Which are low, gray clouds that seem to blanket the sky? Cirrus Stratus Cumulus D. atmosphere

48. 48. A local weather forecaster predicts that a hurricane will begin to affect the Outer Banks of North Carolina in the next 24 hours. Which weather conditions will the hurricane most likely bring? heavy snow and cold temperatures clouds and light rain sunshine and warm temperatures D. strong winds and heavy rain

49. 49. A child has a toothache and has trouble chewing food. Which system in the child’s body does this affect most directly? Circulatory Digestive Muscular D. respiratory

50. Which best compares bacteria and sharks? Bacteria are unicellular, and sharks are multicellular. Bacteria are multicellular, and sharks are unicellular. Bacteria have transport systems, while sharks do not. D. Bacteria reproduce, while sharks do not.