Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
Title
|
"the effect of the (IV) on the (DV)"
"the effect of calcium chloride on water temperature" |
|
|
hypothesis
|
tells how researcher thinks changing the IV will affect the DV
(if IV -then DV) if more scoops of calcium are added, then the water temperature will increase. |
|
|
independent variable
|
variable that was purposefully changed and manipulated for the experiement
(amounts of calcium chloride) |
|
|
dependent variable
|
variable that responded to the IV
(temperature of water) |
|
|
constant
|
things that stay the same in the experimental portions
(amount of water, stirring tempo) |
|
|
control
|
trial/group that is totally normal and unchanged- NOT THE SAME THING AS A CONSTANT! used to compare with experimental trials
(would be the water with no calcium) |
|
|
why do we repeat trials?
|
to reduce chance of error- accurater results!
|
|
|
THE REST IS SCIENTIFIC METHOD STUFF...
|
: )
I <3 bio yes i do I <3 you should too! |
|
|
observation employs...
|
at least one of the five senses- it's not just looking at something!- to perceive events and objects
|
|
|
sample requirements are...
|
must be large and random
must use a cross section of the population |
|
|
a controlled experiment is based on the comparison of...
|
a control group to an experimental group (like with the calcium scoops)
|
|
|
control group and experimental group
|
identical except for one factor which is being tested (scoop amounts)
|
|
|
that ONE Factor is the
|
independent variable
|
|
|
the independent variable (amount of calcium) affects the
|
dependent variable (the temperature of the water)
|
|
|
an explanation supported by data is a
|
model
|
|
|
a model can be...
|
visual
verbal or mathematical |
|
|
a conclusion on the basic of facts or premises rather than on observation is an
|
inference
like if you see smoke, you can guess there's a fire without seeing the flames. based on experience. |
|
|
in an inference testable?
|
no!
|
|
|
a theory is a
|
broad and comprehensive statement of what is thought to be true
supported by a ton of evidence, ties together hypotheses sometimes |
|
|
communication allows scientists to...
|
build on the work of others
|
