Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation.

Model A simplified picture of what's physically going on.

Peer Review Where a scientific report is sent out to peers (other scientists) who examine the data and results, and if they think that the conclusion is reasonable it's published.

Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation

Precise Result A result that is really close to the mean.

Random Error A difference in measurement caused by an unpredictable factor, e.g. human error.

Repeatable Result A Result that can be repeated by the same person using the same method and equipment.

Reproducible Result A result that can be consistently reproduced in an independent experiment.

Valid Conclusion A conclusion that answers the original question.

Accurate Result A result that is really close to the true answer.

Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Independent Variable The variable you change in an experiment.

Dependent Variable The variable you measure in an experiment.

Control Group A group in a study that is treated in exactly the same way as the experimental group, apart from the factor you're investigating.

Placebo A dummy pill or injection that looks exactly like the real drug, but doesn't contain the drug.

Sample size The number of samples in the investigation, e.g. the number of people in a drug trial

Never, never listen to anybody that try to discourage you.

I wouldn't want to be married to me, but luckily Tom Cruise does.

When you start comparing with others you fall into a trap with no way out.

A little insomnia is not without its value in making us appreciate sleep in throwing a ray of light upon that darkness.

I wanted to go on the red carpet with a baseball cap, t-shirt, and jeans. And I still do. Because that's really who I am.

The less I work, the happier I am. I discovered that, as most people discover at some point.

People who are funny and smart and return phone calls get much better press than people who are just funny and smart.

The thing that's great about being a costume designer is you never know what's going to be next; you never what world you are going to enter.

The MAVNI program allows citizenship to be granted to any enlistee who serves one day of wartime service.

I just wanted to say, thanks for all the good times, thanks for harping on me. It was just to go and show them I don't care if they like me or not anymore.

No man could be equipped for the presidency if he has never been tempted by one of the seven cardinal sins.

The air has finally gotten to the place that we can breathe it together.

I have been working since I was 14, nonstop.

No one should abandon duties because he sees defects in them. Every action, every activity, is surrounded by defects as fire is surrounded by smoke.

My buddies wanted to be firemen, farmers or policemen, something like that. Not me, I just wanted to steal people's money!

Smart people make good choices. They dig science and say 'no' to the invasion of sovereign nations for the pleasure of corporations.

The measure of and self-congratulation for our own intelligence should have its basis in our moral behavior as well as our smarts.

I'm less interested in reality. I'm more interested in perception, the truth of the universe that we see.

After 'The Hobbit,' I have no idea if things will change. I suspect if I still want to act I will have to put in the hard yards, not rest on my laurels. A lot of it is right place, right time, but I enjoy the challenge, constantly refining my craft, not taking it too seriously but never taking it for granted.

Ten years ago I said, you know, my goal is to be able to get food on the table. What I'm trying to say by that is trying to create a vibrant, capable and effective middle class. The quicker and stronger that we can be able to do this, the easier it is for political reform to move forward.

My girls and I regularly go through their rooms to find clothes and toys to donate to charities. I firmly believe that children who have been given so much need to experience the joy that comes from giving.

Of course, with the increasing number of aeroplanes one gains increased opportunities for shooting down one's enemies, but at the same time, the possibility of being shot down one's self increases.

Whatever I do, I want to be the best.

The way people love sci-fi is how I love cartoons.