Variables
The variable "I" can change
Independent Variable
The first step in the Scientific Method is ___.
Make observations / Ask a question
The first step in the engineering design process is ___.
Define the problem
What is the format we use when writing a hypothesis?
If IV,
then DV,
because...
What are two controls for the following question?
If I increase the amount of T.V. I watch, will I score better on my test?
-Same test
-Same breakfast
-Same location
-Same bedtime
-Same teacher
-Same amount of study time
The variables that stay the same
Control Variables
A scientist wants to know if a plant grows faster in soil or mulch... What should she do?
designs an experiment
A hypothesis is an ____ guess.
EDUCATED
If your first design doesn't solve a problem, what should you do?
TRY AGAIN (start the Engineering Design Process again)
The variable that is measured or observed
Dependent Variable
What do you call the collection of results from your experiment?
DATA
The Engineering Design Process is used to _____.
Solve Problems
You will use these two words in any hypothesis you write...
"IF" "THEN"
How many variables to you change in an experiment?
ONE
A full-sized working model engineers use to test their design is called a ____?
PROTOTYPE
What are the Independent and dependent variables in the following question?
If I increase the amount of T.V. I watch, will I score better on my test?
IV - the amount of T.V. I watch
DV - my score on the test
A scientist want to know if a plant grows faster in soil or mulch... What should she do?
MAKE AN EXPERIMENT
Which of the following should you NOT do before building?
A. Communicate results
B. Develop a design
C. Define the problem
A. Communicate results
Which of the following would make a good hypothesis?
A. Girls draw better than boys
B. If I plant my flower in mulch, then it will grow taller than if I plant it in soil.
C. If I add salt to my food then it will taste better.
B. If I plant my flower in mulch, then it will grow taller than if I plant it in soil.
Why is the scientific method important for scientists to use?
It helps them to gather accurate evidence