Comparing and measuring attributes (length, weight) Knowledge-Based Download PDF

Questions

1. 1.

   A lump of clay shaped like a compact sphere is rolled out into a long, thin coil without adding or removing any material. How do the length and weight of the clay compare after it is reshaped?

   • A) Both the length and the weight of the clay have increased.
   • B) The length of the clay has increased, but its weight has remained the same.
   • C) The weight of the clay has increased, but its length has remained the same.
   • D) The length of the clay has increased, but its weight has decreased.
2. 2.

   A student measures both the length and the weight of a wooden block using identical unit cubes. How must the cubes be used to measure each of these two attributes?

   • A) To measure length, the cubes are placed on a balance scale until it levels; to measure weight, the cubes are aligned end to end along the edge of the block.
   • B) To measure length, the cubes are aligned end to end along the edge of the block; to measure weight, the cubes are placed on a balance scale until it levels with the block.
   • C) To measure length, the cubes are spread out across the top face of the block; to measure weight, the cubes are stacked into a vertical tower beside the block.
   • D) To measure length, the cubes are counted while dropped into water; to measure weight, the cubes are aligned end to end along the edge of the block.
3. 3.

   Which of the following procedures describes a direct comparison of the weight of two objects rather than their length?

   • A) Aligning the starting ends of two ropes along a flat floor to determine which rope extends further.
   • B) Placing identical plastic centimeter cubes along the side of each book to count how many cubes match each span.
   • C) Stretching a flexible measuring tape from one corner of a desk to the opposite corner to record a number.
   • D) Placing one rock in each pan of a two-pan balance to observe which side tilts downward.
4. 4.

   Which statement correctly explains why a standard ruler cannot be used to determine which of two sealed boxes is heavier?

   • A) A ruler measures the spatial attribute of length, whereas heaviness is determined by the attribute of weight.
   • B) A ruler only measures the attribute of weight if an object has flat rectangular faces.
   • C) Length and weight represent the exact same attribute, but a ruler measures it only in units of volume.
   • D) A ruler cannot measure heaviness because two objects with different lengths always have identical weights.
5. 5.

   An empty plastic drinking straw and a small solid brass cube are compared. Which statement correctly compares the attributes of length and weight for these two objects?

   • A) The drinking straw is shorter and heavier than the solid brass cube.
   • B) The drinking straw must be heavier than the solid brass cube because it has a greater length.
   • C) The solid brass cube must be longer than the drinking straw because it has a greater weight.
   • D) The drinking straw is longer than the solid brass cube, but the solid brass cube is heavier than the drinking straw.