2. C. Temperature and Time

4. B. The apple has more mass than the orange.

6. B. Town B

8. C. Volume of a liquid

10. C. Display data

12. D. Observe and ask questions

14. A. coloring

16. C.

18. D. camouflage

20. B. grass

22. B. Energy pyramid

24. B. Plankton, shrimp, fish, shark

26. D. All of the above

28. A. Rain decreased the temperature.

30. C. The river could overflow and flood the plain.

32. A. The soil is fertile and there is a good water supply.

34. C. It uses food stored in the egg.

36. B. 2, 4, 1, 3

38. B

40. A

42. B. 1, 3, 2, 4

44. B

46. A. X

48. D. Only Dick can hear clearly.

50. D. All will show the same weight.

52. B

54. B. The climate was warmer and wetter millions of years ago.

56. A. Mountain K

58. B. A landslide

60. B

62. A. It uses electricity to produce heat.

64. A. On top of the building

66. B. down

68. B. Cheetah and peregrine falcon

70. D. Ball N

72. D

74. A. Chair 1

76. D

78. D. They are different sizes.

80. D. Birds, trees, worms

82. D. All objects have mass.

84. A. flower

86. D. An apple core.

87. One kind of plant adaptation is color. How does color help a plant survive? A. A plants color protects it from enemies. B. A plants color helps it hold water. C. A plants color attracts animals to pollinate it. D. A plants color helps it grow toward the Sun.

88. C. A plants color helps attract animals to pollinate it.

89. Which of the following is a natural change to a habitat? A. hurricane B. pollution C. people building a house D. a machine knocking down trees

90. A. hurricane

91. When a habitat changes, it may not have food, water, shelter, or living space for the plants and animals. Which would you expect to happen after this kind of habitat change? A. The plants and animals will not be affected. B. The plants will be fine but the animals will be affected. C. The animals will be fine but the plants will be affected. D. The plants and animals my die or try to move to a new habitat.

92. D. The plants and animals may die or try to move to another habitat.

93. What role do decomposers play in a food chain? A. They return nutrients to the soil. B. They make food for animals. C. They are eaten by producers. D. They return energy to the Sun.

94. A. They return nutrients to the soil.

95. What occurs when water covers land that is usually dry? A. A delta B. An earthquake C. A volcanic eruption D. A flood

97. Which Earth materials to crops need to grow? A. aluminum and steel B. iron ore and copper C. wood and peat D. soil and fresh water

98. D. Soil and fresh water

99. Which slow process breaks rocks into smaller pieces? A. erosion B. gravity C. weathering D. deposition

100. C. weathering

101. During erosion, what usually carries loose, broken rocks to new places? A. earthquakes and volcanoes B. plants C. wind or water D. landslides

102. C. wind or water

103. Which process or event changes Earths land quickly or rapidly? A. volcanic eruption B. deposition C. weathering D. erosion

104. A. Volcanic eruption

105. What do most rivers flow into? A. a stream or another river B. a lake or a pond C. a sea or an ocean D. a glacier or an ice cap

106. C. a sea or an ocean

107. Where is most of Earths fresh water? A. oceans B. glaciers and ice caps C. lakes and ponds D. rivers

108. B. Glaciers and ice caps

109. What are the smallest rock particles that make up soil? A. silt B. clay C. humus D. sediment

110. B. clay

111. What is humus made of? A. tiny bits of rock B. sand C. decaying plants and animals D. clay

112. C. decaying plants and animals

113. Which property can help you identify a mineral? A. mass B. shape C. size D. hardness

115. What is luster? A. how a mineral reflects light B. the hardness of the mineral C. the color of a mineral D. the streak a mineral leaves

116. A. how a mineral reflects light

117. What type of fossil is formed when sand containing an imprint formed by a plant or animal becomes a rock? A. tree sap fossil B. cast fossil C. mold fossil D. petrified wood

118. C. Mold fossil

119. How does a cast fossil form? A. when a mold fossil is filled with sediments B. when a living thing is trapped in tree sap C. when a bone is preserved in tar D. when a living thing leaves a mark in sand

120. A. When a mold fossil is filled with sediments

121. What can scientists learn by studying fossils? A. They can learn about the environment of the past. B. They can learn about what will happen in the future. C. They can learn about what ancient plants tasted like. D.They can learn about why club mosses grow in warm, wet weather.

122. A. They can learn about the environments of the past.