Page 15 - Final Science_B.B_prep.1_t.1_unit2 2026_Neat

o Materials are divided into two types according to the ability to be
attracted:

Magnetic materials Non-Magnetic materials

- They are the materials - They are the materials
which are attracted to which aren’t attracted to
magnet. the magnet.

- Examples: - Examples:
Iron, nickel, cobalt and steel. Glass, gold, silver, copper,
aluminum, & plastic.

Application

? Forensic & criminal investigation experts use magnetic brush
& iron filings to reveal the unclear fingerprints.

1- Magnetic brush + iron filings
2- Brush is passed over the unclear

finger prints
3- Some iron filings stick to the

left traces of fingerprint.
(Visible)

First Term 125