Is this an independent or dependent clause?

Before I go to sleep

The dog is playing catch.

Because I studied hard for my test.

Cheetahs are the fastest land animals.

I am trying to decide which book I want to read next.

Because I like french fries

The falcon soared majestically.

What is the phrase in red?

Before I went to school, I had a huge cup of coffee.

Identify the dependent clause:

Which word makes the first half dependent?

Since it is the weekend, I will sleep until noon.

Is the blue clause independent or dependent?

When we visited Paris, we saw the Eiffle Tower.