Making Connections Lab

In the lab activity Making Connections, an experiment was designed to test the effect of exercise on the ability to squeeze a clothespin. The number of times the clothespin was squeezed served as the

• independent variable

• dependent variable

• hypothesis

• control

A student concluded that “all females have a smaller lung capacity than males.” Is this a valid conclusion? Support your answer.

• The conclusion is not supported because one of the males has a smaller average than one of the females

• Yes, because it is a very large sample

• Females generally have a smaller lung capacity because they have lower BMI (Body Mass Index)

• Females lungs are smaller than males

Tags

NGSS.MS-LS4-2

Based on the information below, is there a relationship between height and resting pulse rate? Support your answer.

• Yes, there is a positive relationship.

• Yes, there is a negative relationship.

• No, there is no relationship.

• The data is inconclusive.

Students were asked to design a lab that investigated the relationship between exercise and heart rate. Heart rate was determined by recording the pulse rate in beats per minute. The students hypothesized that increased exercise results in an increased heart rate. The class results for the experiment are shown in the graph.

Which statement is best supported by the graph?

• Before exercising, the average pulse rate was 65; four minutes after exercising, the average pulse rate was 65.

• After four minutes of exercising, the average pulse rate was 120; two minutes after exercising, the average pulse rate was 120.

• While exercising, the highest average pulse rate was 150; before exercising, the average pulse rate was 65.

• Two minutes before exercising, the average pulse rate was 80; after two minutes of exercise, the average pulse rate was 140

Tags

NGSS.MS-PS3-5

When analyzing lab data, what is a strategic way to identify connections between variables?

• Look for patterns and correlations in the data

• Focus only on the data that supports your hypothesis

• Disregard any unexpected results

• Use only qualitative data

Tags

DOK Level 3: Strategic Thinking

Which of the following is a strategic approach to analyzing lab data connections?

• Randomly selecting data points

• Comparing data with existing theories

• Ignoring outliers

• Using only the data that supports your hypothesis

Tags

DOK Level 3: Strategic Thinking

In the Making Connections Lab, what is the primary purpose of using a control group?

• To introduce a variable for testing

• To serve as a standard for comparison

• To ensure the experiment is biased

• To manipulate the outcome

Which of the following best describes a dependent variable in the Making Connections Lab?

• A variable that is changed by the experimenter

• A variable that changes in response to the independent variable

• A variable that remains constant

• A variable that is not measured

Tags

NGSS.MS-PS2-2

In the context of the Making Connections Lab, what is the role of a hypothesis?

• To provide a detailed procedure

• To predict the outcome of the experiment

• To record the data collected

• To serve as a control

What is a common method for analyzing data in the Making Connections Lab?

• Ignoring outliers

• Using only qualitative data

• Looking for patterns and correlations

• Focusing only on data that supports the hypothesis

Tags

NGSS.MS-PS3-1