Forensics Unit 4

The physical properties of glass include

I. density

II. refractive Index

• I

• I, II

• II

Chemical Composition of glass is made up of

• silica

• sand and silica

• silica

Tags

NGSS.MS-PS1-1

You can determine the Refractive Index by the ______________________ _______________________.

• immersion method

• Becke Line

• match point

Tags

NGSS.MS-PS4-2

When the refractive index of the liquid matches the refractive index of the glass fragment; this is called the ___________________________________.

• match point

• immersion line

• Becke line

Tags

NGSS.MS-PS4-2

A high velocity projectile always leaves a hole wider at the ________________________side of the glass.

• entrance

• exit

• middle

Tags

NGSS.MS-PS3-5

Glass samples collected should be documented, marked (if necessary), packaged, and labeled. When the samples are collected the samples must be placed in __________________.

• metal paint can

• manila envelop

• zip lock bag

What type of solid is seen in the picture?

• Amorphous solid
• Regular solid
• Liquid
• Gas

Refraction is the change in the direction of light as it changes ___ when moving from one medium into another.

• Shape
• Distance
• Speed
• Structure

Tags

NGSS.MS-PS4-2

Bits of glass can fly backwards.  This is called:

• Backtrace
• Backspatter
• Backflash
• Backscatter

Which of the following is the correct formula for calculating the density of glass?

• D= m/V
• D= V/m
• D= m x V
• D= 2mV