School Improvement in Maryland

Public Release Item: Public Release items have appeared on HSA forms and then are released for public viewing and use. Releasing items is one step to ensuring that schools, districts, and other stakeholders understand how the core learning goals are assessed on the HSA.

Goal 1 Skills And Processes

Expectation 1.5 The student will use appropriate methods for communicating in writing and orally the processes and results of scientific investigation.

Indicator 1.5.1 The student will demonstrate the ability to summarize data (measurements/observations).

Selected Response Item - Released in 2008

Use the information and the graph below to answer the following item.

A group of students measured the volume of air they exhaled during three different activities: sitting, walking, and running. The volume of exhaled air is directly related to the amount of carbon dioxide produced. The data the students collected are summarized in the graph below.

According to the data, as physical activity increases, the amount of carbon dioxide produced

  1. decreases
  2. increases
  3. remains constant
  4. decreases, then increases
/share/clg/xml/public_release/science/2008_151_bio15.xml

Correct Answer:
B