The Basics
A useful hypothesis must be capable of this.
Being tested.
The energy an object has due to it's motion.
Kinetic energy.
This subatomic particle determines the kind of atom.
Proton.
Speed with direction is called this.
Velocity.
The SI Unit for force is called this.
The newton (N)
This is the variable that the experimenter changes/manipulates in an experiment.
The independent variable.
A pure substance that cannot be broken down into a simpler substance and contains only one type of atom.
An element.
The atomic number of an atom is determined by this.
The number of protons.
The distance an object travels plus the direction from a starting point is called this.
Displacement.
This is the frictional force that acts on stationary objects and opposes the initiation of motion.
Static friction.
This is the standard unit that is used to measure distance in physical science.
The Meter.
An atom.
The electrons that are in the highest energy level (farthest from the nucleus) are called the this.
Valence electrons.
The change in an objects velocity over time is called this.
Acceleration.
The motion of an object when it is falling solely under the influence of gravity without air resistance.
Free Fall.
These are the five steps in the Scientific Method.
1. Make Observations 2. Ask questions & do research 3. Form one or more hypotheses 4. Develop experiments to test hypotheses 5. Analyze data & draw conclusions.
These subatomic particles have a negative charge and orbit the nucleus.
Electrons.
These are the 4 steps to solve a word problem.
Step 1: list the knowns and unknowns (convert units if needed) Step 2: write out the equation you will use. Step 3: write out the equation substituting the numbers from step one. 4: Solve the problem.
In science, energy is defined as this.
The ability to move or change matter.
Draw a graph, label the x and y axis and give the data a positively sloped line.
See example.
The most current model of the atom is called this.
The Electron Cloud Model or the Quantum Mechanical Model.
On a distance-time graph, the slope of the line represents this.
The speed of an object.
The SI unit for energy is called this.
A joule.