This is a great question and a little trick that native English speakers will use to emphasise to to describe something more fully.
When you see 'UP' and the end of a verb, it means completely or totally. for example, look at these sentences:
- I tore my paper. This just means you made a little tear in your paper.
- I tore up my paper. This means that you complete destoyed the paper and tore it into little pieces.
- I cut up the vegetable. This means you did a little cutting of the vegetables.
- I cut up the vegetable. This means that you completely cut the vegetables and prepared them for eating!
Other verbs we can use are
- break / break up
- rip / rip up
What others do you know?