Physics Basics Flashcards
What Are the Steps of The Scientific Method?
Observe, Question, Predict, Test Predictions, Draw Conclusions
A Theory Is
a combination of combination of facts and well tested hypotheses
Scientific Thinking is
the search for knowledge
The Scientific Method was made by
Galileo
The Printing Press was invented by
Gutenberg
Equations are
guides for thinking
A Scientific Hypothesis is
an educated guess
Hypotheses tested repeatedly may become
laws or principles
A Scientific Fact is
something competent observers believe to be true
Theory
combination of facts and well tested hypotheses
One experiment could
prove a hypothesis wrong
Physics
study of basic concepts such as motion, force, energy, matter, heat, sound, light, and the components of atoms
kilo (k)
thousand
mega (M)
million
giga (G)
billion
deci (d)
tenth
centi (c)
hundredth
milli (m)
thousandth
micro
millionth
Significant Figures
number of meaningful digits that contribute to the precision of a measure
Inertia
resistance to change in motion
Motion
change in position
Net Force
combination of all forces acting on an object
Force
push orpull
Equilibrium
condition when all forces on an object are balanced. Net Force = 0
Normal Force
reaction force perpendicular to the surface
Newtons First Law
Objects in motion stay in motion, objects at rest stay at rest, unless an unbalanced force is acting upon it
Equation for Time
distance/speed
Equation for Distance
Speed x Time
Equation For Speed
distance/time
Velocity
How fast and in what direction something is moving
Tension
a stretching force
Friction
resistance that one surface or object encounters when moving over another.
Mechanical Equilibrium
state wherein no physical changes occur; state of steadiness
Support Force
upward force that balances the weight of an object on the surface. (Also called normal force)
