Good Luck!!!!!

Good luck for tomorrow guys!! :)

and yes... I think

ok

?

WHAT DO YOU MEAN!?!
come show me!!!

Spelling

TRANSITION NOT TRANSACTION DIFFERENT SEE!!!!!!!!


TRANSITION NEXT TO BACKGROUND

What do you mean 'using animation in your transaction?'

question

how many of you are finished?


Are any of you using animation in your transition of slides?


Do you need any help?

answer

tins are ok
but remember it must be the same weight

Help!

HELP PLEASE!!

For the testing would a platic cup or tin (e.g. peach tin) be better??

thank you

                                             thanks
thanks
thanks
thanks
thanks
thanks

help

polystyrene
plaster
polyester
work

Variables

Scientists use an experiment to search for cause and effect relationships in nature. In other words, they design an experiment so that changes to one item cause something else to vary in a predictable way.

These changing quantities are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled.

The independent variable is the one that is changed by the scientist. To insure a fair test, a good experiment has only one independent variable. As the scientist changes the independent variable, he or she observes what happens.

The scientist focuses his or her observations on the dependent variable to see how it responds to the change made to the independent variable. The new value of the dependent variable is caused by and depends on the value of the independent variable.

For example, if you open a faucet (the independent variable), the quantity of water flowing (dependent variable) changes in response--you observe that the water flow increases. The number of dependent variables in an experiment varies, but there is often more than one.

Experiments also have controlled variables. Controlled variables are quantities that a scientist wants to remain constant, and he must observe them as carefully as the dependent variables. For example, if we want to measure how much water flow increases when we open a faucet, it is important to make sure that the water pressure (the controlled variable) is held constant. That's because both the water pressure and the opening of a faucet have an impact on how much water flows. If we change both of them at the same time, we can't be sure how much of the change in water flow is because of the faucet opening and how much because of the water pressure. In other words, it would not be a fair test. Most experiments have more than one controlled variable. Some people refer to controlled variables as "constant variables."