Scientific Method
An educated guess
What is a hypothesis
This is at the top of the speed triangle.
What is "distance?"
These forces do not change an object's motion because they are equal in size and opposite in direction.
What are balanced forces?
A book weighing 1.0 N is lifted 2 meters. This is the amount of work being done.
What is 2.0 J?
w = f X d
This law states that energy can change form but not be created or destroyed in ordinary circumstances.
What is the Law of Conservation of Energy?
This type of observation is based on numbers.
What is quantitative?
If a boy to walk to school at a speed of 4 km/hr.; this is the time it takes him to walk 20km.
What is 5.0 hr?
T= D/S
This is Newton's Third Law of Motion
What is for every action there is an opposite and equal reaction?
Speed equals distance divided by this.
What is time?
s = d/t
This is the type of energy that is stored and depends on position or condition.
What is potential energy?
This is the variable that is changed by the scientist.
What is the independent variable?
This is the formula used to find acceleration.
What is:
A = Vf - Vi/time?
This is the formula for work.
What is work = force X distance?
A dictionary weighing 20 N is placed on the desk. This is the force that the desk exerts on the dictionary.
What is 20N?
For most materials, particles react this way when they are heated.
What is the particles move faster and spread apart?
An experiment can only have this number of independent variables.
What is one?
When I read a motion graph, this is always on the "y" axis.
What is the distance?
This type of simple machine is made up of two wheels of different sizes that rotate together.
What is a wheel and axle?
An object moving at a speed of 10m/s accelerates to a final speed of 70m/s in 3 seconds. This is the acceleration of the object rounded to the nearest tenth.
What is 20m/s2 ?
A = V1 - V2 / t
This is the type of energy a slingshot has when it is pulled back all the way.
What is elastic potential energy?
This is the thing you compare to to see if your independent variable has had any effect.
What is the control?
If a train is slowing down, it is accelerating- true or false
What is true (acceleration is the rate at which speed changes)?
The product of an object's mass and velocity is equal to this.
What is momentum?
A baseball pitcher throws a fastball at 42m/s. Thisis the amount of time it takes for the ball to reach a batter that is 18 m away (rounded ot the nearest tenth.)
What is 0.4 s?
t = d/s
The transfer of energy by electromagnetic waves is called this.
What is radiation?