DNA Model

Hello!

I just wanted to say that on April 18 I successfully completed an almost 2 foot tall model of DNA! It will be my 3D piece for the school project I've been telling you about and was very fun to make!
Below are some pictures of making it.

Over & Out!
Elise

Hello!

Just checking in! I wanted to say that I'm starting my power point for my school project soon and I'm working on building a huge model of DNA to show!! I will be interviewing another forensic specialist who studies investigations so keep a lookout for a new post featuring her.

Over&Out!
Elise

Firearms: Identification

Rifling scratches a bullet and makes it as genuine as a fingerprint. Also when the  gunman pulls  the trigger tiny bits of explosive, called gunshot residue, sprays out onto the gunners hands. If a suspect is interviewed after a crime, his hands might be swabbed with a special chemical to show if he has fired a gun recently.

What Gun?
Each brand and type of gun has it's own rifling, so forensic scientists might fire a gun of the same type and see if the rifling on the bullet matches. If they match, they will search a suspect for any weapons.

Where?
Where the killer and the victim were standing is also a important clue. Cartridge cases are fired right behind the bullet and will land at the gunners feet, showing were the killer and the victim were standing.

Over & Out! 

Elise

Firearms: Different Kinds

There are many types of guns and bullets, but I will only tell you a few.

Guns

Shotgun- Long barreled gun with bullets filled with tiny pellets called shots.

Rifle- Long barreled gun with rifling and instead of single bullets, it holds a pack, called a magazine.

Pistol- Also known as a handgun,pistols were first adapted in the military. They are described as "automatic" or more specifically "semiautomatic".

Bullet Types

Modified Bullet- Also known as "Dum-Dums", modified bullets are some how changed to give more damage to it's target.

Replica Bullet- Does not cause harm unless you switch the contents inside.

Cartridge Types

Rifle Cartridge-   Longer and skinnier then the pistol cartridge. It is made of lead with a metal casing.

Pistol Cartridge- Short and wide. Immediately ejected from gun with force from the gunshot. 

Over & Out!
Elise!