Understanding Physical Evidence Techniques

What is the primary purpose of collecting physical evidence at a crime scene?

• To provide entertainment for the public

• To establish facts and support investigations

• To confuse the jury

• To decorate the crime scene

Which of the following is considered a type of physical evidence?

• Eyewitness testimony

• Fingerprints

• Alibi

• Motive

What is the first step in the collection of physical evidence?

• Analysing the evidence

• Packaging the evidence

• Securing and isolating the crime scene

• Labelling the evidence

Which technique is commonly used to preserve biological evidence?

• Freezing

• Heating

• Exposing to sunlight

• Immersing in water

What is the main reason for using gloves when collecting physical evidence?

• To keep hands warm

• To avoid contamination

• To look professional

• To prevent fingerprints from being left on the evidence

Which of the following is a method used to analyse physical evidence?

• Guessing

• Chromatography

• Storytelling

• Daydreaming

What is the importance of labelling evidence correctly?

• To make it look neat

• To ensure it is easily identifiable and traceable

• To confuse the defence

• To add more paperwork

Which of the following is NOT a preservation technique for physical evidence?

• Sealing in airtight containers

• Exposing to high temperatures

• Refrigeration

• Using desiccants

What unit of measurement is typically used for small quantities of liquid evidence in Great Britain?

• Litres

• Gallons

• Ounces

• Pints

Which of the following is a common method for analysing trace evidence?

• Mass spectrometry

• Telepathy

• Astrology

• Palm reading