Nt1330 Lab 1.1
Activity 1.1.5: Time of Death Experimental Design
1. Identify the Problem or Question
State the research problem or question in one sentence.
The problem should be very specific and measurable.
Write one sentence in the form of a question or problem statement.
Problem Statement: How do different ambient temperatures affect the rate of body cooling?
2. Predict a solution to the problem or an answer to the question.
This will be in the form of a hypothesis.
This solution design or hypothesis should be based on previously obtained knowledge or research and should be supported by scientific evidence.
Identify the independent and dependent variables.
The independent variable is the variable that is varied or manipulated by …show more content…
3. Obtain three test tubes and measure and place 1 gram of sodium polyacrylate into each.
4. Obtain three Vernier Temperature Probes, three analog thermometers, and three ring stands with clamps.
5. Start Logger Pro® software on the computers.
6. Click on File Open and open the Forensics with Vernier folder.
7. Open the program titled 14 Hot Air, Cold Body.
8. Connect the LabQuest Mini to each computer using USB cables.
9. Connect the Temperature Probes into CH 1 of the LabQuest Minis using the British Telecom connector.
10. Place the thermometer in the water baths to ensure that they maintain the correct temperatures. Record this temperature in the Evidence Record table.
11. Attach the Temperature Probes to the clamp on the ring stands.
12. Place 20 mL of 37˚ water into the test tubes. These represent dead bodies.
13. Place a test tube with waterlock representing the dead body in each of the three water baths.
14. Place a Temperature Probe in the center of each test tube with waterlock.
15. Wait for the temperature sensors to reach the temperature of the waterlock. Click to begin data collection. Note that the experiment is set to collect data for 20
1. Identify the Problem or Question
State the research problem or question in one sentence.
The problem should be very specific and measurable.
Write one sentence in the form of a question or problem statement.
Problem Statement: How do different ambient temperatures affect the rate of body cooling?
2. Predict a solution to the problem or an answer to the question.
This will be in the form of a hypothesis.
This solution design or hypothesis should be based on previously obtained knowledge or research and should be supported by scientific evidence.
Identify the independent and dependent variables.
The independent variable is the variable that is varied or manipulated by …show more content…
3. Obtain three test tubes and measure and place 1 gram of sodium polyacrylate into each.
4. Obtain three Vernier Temperature Probes, three analog thermometers, and three ring stands with clamps.
5. Start Logger Pro® software on the computers.
6. Click on File Open and open the Forensics with Vernier folder.
7. Open the program titled 14 Hot Air, Cold Body.
8. Connect the LabQuest Mini to each computer using USB cables.
9. Connect the Temperature Probes into CH 1 of the LabQuest Minis using the British Telecom connector.
10. Place the thermometer in the water baths to ensure that they maintain the correct temperatures. Record this temperature in the Evidence Record table.
11. Attach the Temperature Probes to the clamp on the ring stands.
12. Place 20 mL of 37˚ water into the test tubes. These represent dead bodies.
13. Place a test tube with waterlock representing the dead body in each of the three water baths.
14. Place a Temperature Probe in the center of each test tube with waterlock.
15. Wait for the temperature sensors to reach the temperature of the waterlock. Click to begin data collection. Note that the experiment is set to collect data for 20