Fianls Review 1 Flashcards
What are Natural Laws
They explain how how the entire universe always works
What can energy be stored as?
Work
What’s a scientific theory
A well explained method about the natural world
What’s a Scientific Hypothesis
A prediction of an outcome of an experiment
May be modified
Can be tested
The length of an arrow can show what?
Vectors
The strength of force
What’s the acceleration formula?
Vf-Vo
A=. ———-
T
What unit does mechanical Advantage have?
It doesn’t have one.
If Kayla is ROLLERSKATING with her bro, and pushes off him, how does there acceleration compare
kayla has a 60 kg mass and her bro has a 30 kg mass
Her brothers accelerates more
What makes up Weightt?
Mass and Gravity
What’s the control variable?
Doesn’t change
Experimental variable
It’s the one thing your changing
Independent
A unit of motion repeated over and over again
A cycle
Changes in motion come from what
Unbalanced Forces
Name the states of matter in order from Least molecules to most molecules
Solid, liquid, gas
What is the scientific method
The method of procedure that consists of observations, measurement, experiment testing, and modification
What does this stand for
K.H.D.M. ?.C.M
Idk
What’s Newton’s first law?
An object at rest stays at rest, an object of motion stays in motion
What’s newtons 2nd Law?
Every action has an equal an opposite reaction
What’s Newtons 3rd Law?
F=M/A
If the length of a pendulum increases, what does the period of the pendulum do?
Increases
Unit for Periods of a Cycle
Seconds
What is a requirement of doing work?
Energy
What’s Energy measured in?
Joules
What do you have to do for there to be no work done
Don’t lift, or push, pull things
Carrying or holding has no work applied
If the length of a pendulum increases, the period of a pendulum what?
Increases
An object at rest:
Has inertia and No momentum
The amount of matter an object has is:
Mass
Dimensional Analysis is used for what?
To Convert Units
Mass is the measurement of what
How much matter that makes up something
A longitudinal wave travels at the same distance of what?
Oscillations
A simple machine can multiply what
Forces and Speed
Efficiency is
The measure how how efficient a machine works
What are meaningful digits called in a measurement?
Significant Digits
Speed that does not change is called what
Constant Speed
Sanik Speed all the time
Variables that have both speed and direction are called
Vectors
