Are all kids with ADHD hyperactive?

I casually clicked on a “test” thing to see how much I know about ADHD. That was one of the question. I answered “Yes.” Well, the test said that’s the wrong answer but that makes no sense. ADHD stands for Attention Deficit Hyperactivity Disorder. ADD is the term used for just Attention Deficit Disorder. That’s how we defined it in the schools, anyway.

So, can you explain this?