Question

Which explains how burning a magnesium ribbon highlights a toolmark?

A.)The shimmering light provides shadows that show the relief of the mark.

B.) It burns brightly to provide light for photography.

C.) It forms a fine, white powder within the mark.

D.) It forms a material to cast the toolmark.

Answer 1

Answer: A. The shimmering light provides shadows that show the relied of the mark.

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Answer 2

The magnesium ribbon, D. It forms a material to cast the tool mark.

Step-by-step explanation:

When a magnesium ribbon is burnt in the presence of oxygen it gives out strong light and heat is produced. Apart from it, it leads to the production of substance called as magnesium oxide which is formed as the product due to the reaction of magnesium with the oxygen present in the air.

Tool marks are the mark which is created by tools while using them. In order to identify or locate them castes made up of magnesium oxide is utilized. When this is pasted on the suspected area, the tool mark of the suspected tool gets pasted on it.