Take photo using webcam
Solution 1:
There's an application called cheese which can do this. IIRC it's installed by default. If not, you can install it manually using the software center or by typing sudo apt-get install cheese into a terminal window.
Solution 2:
I would suggest you use Cheese. It is a webcam program for Ubuntu that supports almost any webcam.
You can install it by running the following command in a terminal (Ctrl+Alt+T):
sudo apt-get install cheese
After that, it will display in your installed programs menus.