Exploring Forensic Science Methods

What is the first step in the scientific method?

• Hypothesis

• Observation

• Experimentation

• Analysis

Which step of the scientific method involves forming a possible explanation for an observation?

• Conclusion

• Hypothesis

• Experimentation

• Analysis

In forensic science, what is an example of the "Observation" step in the scientific method?

• Testing DNA samples

• Noticing blood spatter patterns at a crime scene

• Evaluating DNA against a suspect database

• Determining the suspect's presence at the crime scene

What question might a forensic scientist ask after observing blood spatter at a crime scene?

• How many suspects are there?

• What could have caused the blood spatter?

• What is the DNA sequence?

• How old is the blood sample?

Which step of the scientific method involves testing a hypothesis through controlled procedures?

• Observation

• Experimentation

• Analysis

• Conclusion

Tags

NGSS.MS-PS2-2

What is the purpose of the "Analysis" step in the scientific method?

• To form a hypothesis

• To test a hypothesis

• To evaluate data and draw conclusions

• To observe phenomena

Tags

NGSS.HS-PS1-2

In forensic science, what is an example of the "Experimentation" step?

• Noticing blood spatter patterns

• Collecting samples and testing them for DNA

• Evaluating DNA against a suspect database

• Determining the suspect's presence at the crime scene

Tags

NGSS.HS-PS1-3

What is Locard's Exchange Principle?

• The principle that every contact leaves a trace

• The principle of DNA matching

• The principle of blood spatter analysis

• The principle of fingerprint uniqueness

How does the intensity and duration of contact affect Locard's Exchange Principle?

• It decreases the amount of trace evidence

• It increases the amount of trace evidence

• It has no effect on trace evidence

• It only affects DNA evidence

Which type of evidence is directly observed and can be used to prove a fact?

• Physical evidence

• Trace evidence

• Circumstantial evidence

• Direct evidence