Nature of Science
Which of the following is NOT part of the scientific method?
question, hypothesis, claim, experiment, data analysis, conclusion
claim
How does displacement differ from distance?
Displacement is a scalar with magnitude and direction. Distance is just a scalar, no direction.
What is Newton's first law?
Law of inertia. Objects resist changes in motion.
Give an example of a pulley used in daily life.
Flag pole, window blinds with pulls, cranes, etc...
A method used by scientists to answer an investigative question.
Scientific Method
This variable in a science investigation is what is recorded as data.
What is the equation for the slope of a line?
Y2-Y1/X2-X1 (rise over run)
F=ma (force is equal to mass multiplied by acceleration).
A ladder or ramp is an example of this simple machine.
Incline Plane
A quantity with magnitude only, no direction.
Scalar
This type of investigation records opinions or observations as data.
Qualitative
How is speed different than acceleration?
Speed is a scalar, no direction. Acceleration has direction, a vector.
Give an example of Newton's 3rd law from daily life.
Any motion that explains action and reaction forces.
A car speeding down the runway is an example of what kind of energy?
Kinetic
Resistance to change in motion.
Inertia
What is the independent and dependent variable in the scientific question below:
How does flower color effect the number of bees that pollinate it?
independent: flower color
dependent: number of bees
What is the speed of an object that travels a distance of 2500m in 100s?
Don't forget your units!
25m/s
How much force is needed to accelerate a 50kg object at 2m/s2?
Don't forget your units!
100N
How much force is required to move an object 35m with 175J of work?
Don't forget your units!
5N
Devices that change the size, direction or distance of force applied to make work easier to do.
Machine
Determine the independent, dependent variable in the science question below along with a control and the type of investigation it is.
Where do seeds grow best?
independent: location
dependent: observations, growth height
control: same seeds, amount of water/sunlight, same soil etc...
It can be either qualitative or quantitative depending upon your specific data collection methods.
What is the acceleration of a car that slows from 21km/s to a complete stop in 7s?
Don't forget your units!
3m/s2
A 50kg object is pushed with a force of 200N, how fast will the object accelerate?
Don't forget your units!
4m/s2
How much work is done by an object that moves 25m when pushed with a force of 2N?
Don't forget your units!
50J
The study of matter and its motion through space and time.
Physics