Vocabulary
When you repeat your experiment from start to finish ....
Repetition
Which scientific method step goes right after experiment
record or analyze
What is this process called?
After completing an experiment, you ask your friend to do the same experiment so you can check your results
Replication
The variable that is being changed or manipulated by the scientist
what is a nebula
a giant cloud of gas and dust
What is a scientific theory?
A broad explanation supported by evidence
The type of data that scientists record from making observations based on numerical measurements in science?
quantitative data
Why do we keep controlled variables the same?
So only the independent variable affects the outcome
What is a dependent variable?
What is being measured or recorded, the data
university of florida
Explain the difference between a scientific theory and scientific law
Theories explain how or why, laws describe what
A representation of something in the natural world, typically too small or large to study up close.
What is a model?
"Which is better: math or science"
Is this a testable question, why or why not?
No, it is based on opinion
The variables that remain the same for all trials in an investigation so that the experiment can be VALID.
Controls or constants
What is Mr. Karim's birthday
March 15
Why are experiments considered the most rigorous investigation?
A clear procedure, controlled variables, identified variables
What happens to a theory when new observations are made?
we update our theories with the new observations
example: atomic theory
How can a scientific theory become a scientific law
It CANT they are DIFFERENT things.
Theory explains why, law describes what
Name the control group to the following experiment. How does the amount of water effect the growth of a plant? You give three different plants 1 cup of water, 2 cups of water, and no water
The cup with no water, it gives us results to compare the others to
whats mr karims favorite color
black
Give an example of a scientific law. half credit if you can only tell me what a law is
laws of planetary motion, law of gravity, laws of thermodynamics, gas laws etc.
Students test if adding salt to water changes how fast it freezes. Identify the independent, dependent, control group, and one controlled variable.
Independent: salt in water; Dependent: freezing time; Control: plain water; Controlled: container size, freezer temperature
A researcher gives two groups of athletes different amounts of practice time each week and measures their game performance. Identify independent, dependent, and two controlled variables.
independent - practice time
dependent - game performance
controls - type of sport, diet, sleep
Nikolas is wondering how parachute size would effect the speed that an object falls. He makes an experiment and tests this.
Identify independent, dependent, and two possible controls.
independent - parachute size
dependent - falling speed of the object
controls - material of parachute, object size/weight
What does mr karim have for lunch today
pasta, chicken, cheez its, protein shake