Variables
In a scientific experiment, what is an independent variable?
The thing that is changed on purpose.
When using a flame/fire in science class, it is important to remember to...
tie back long hair and know the location of the fire extinguisher
What is an inference?
something that may be based on what you sense
Data
recorded observations
What is the first step in a scientific experiment?
Identify the problem
How many independent variables can there be in an experiment?
One
The last thing to be done during an experiment is...
clean up supplies and wash hands.
What is an observation?
Information gathered by your senses.
hypothesis
an educated guess about the outcome of an experiment
What is the second step in a scientific experiment?
Research the problem
In a scientific experiment, what is a dependent variable?
The thing that is measured.
If a chemical spills in the lab the student must first...
report the spill to the teacher.
Observation or inference?
A stopwatch on my desk was beeping.
Observation
The outcome of the experiment is...
the dependent variable
What is the proper format for writing a hypothesis?
If (independent variable), then (dependent variable).
In a scientific experiment, what is a controlled variable?
The thing(s) that stay the same.
Where is the fire extinguisher located?
Next to the door.
Observation or inference?
Joe smelled his lunchbox, and said his food was spoiled.
Inference
What is the difference between an independent and a dependent variable?
Independent- changed on purpose
Dependent- changes because of the independent variable (measured)
The third step in a scientific experiment is...
forming a hypothesis
In a scientific experiment, how many controlled variables should there be?
An indefinite amount
Name the four pieces of safety equipment in the science lab.
fire extinguisher
fire blanket
eye was station
rescue window
Observation or inference?
The round was shaking....perhaps there was an earthquake.
Inference
Theory
An idea that has been accepted as true, but has not been tested
What are steps 4-7 in a scientific experiment?
4. conduct the experiment
5. observe snd record data
6. form a conclusion
7. re-test