Fichas
Chapter 1.4
Fichas del conjunto (20)
- 1When do you need team work in a lab?you need teamwork when you are doing an experiment.
- 2Define the word variable?In science a variable is any item,factor or condition that can be controlled or changed.
- 3what is a hypothesis?A hypothesis is an educational guess.
- 4what does dependent variable mean?A dependent variable is what you measure in the experiment and what is affected during the experiment.
- 5what does independent variable mean?An independent variable is the variable that is changed or controlled in a scientific experiment.
- 6what does controlled variables mean?something that you are controlling.
- 7what is an experiment?A test under controlled conditions that is made to demonstrate a known truth, to examine the validity of a hypothesis, or to determine the efficacy of something previously untried.
- 8what is a fair test mean?A fair test is when changing one factor at a time and keeping the others the same.
- 9what is a procedure?A procedure is a plan that you follow when conducting a experiment?
- 10why is it important to choose the right equipment?so you do not get hurt or someone else.
- 11when are line graphed used?Line graphs used when you have two sets of continuous measurements like height, mass or time.
- 12Do you think a hypothesis and a guess are the same.No they are not the same.
- 13what should you be able to identify in a experiment?you should be able to identify the the dependent variable,independent variable and controlled variable.
- 14how many variables can you change at a time?you should only change one variable at a time.
- 15give 5 examples of variables?Age, fitness,shoes,wind and surface
- 16name 4 variables?surface,the type of ball, tennis racket must be the same
- 17why is it important to check your experiment again?so you can check if you did it a mistake or not.
- 18why is it important to let lots of different people to work on a experiment?so they can share there skill in the experiment?
- 19why is it important to check your procedure before you start?so you do not make a mistake?
- 20what do you do if the experiment is not safe?change it and make it safer.