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Vocabulary
Forces
Newton's Laws
Science Practices
Simple Machines
100
The description of forces when there is a change in motion.
What are unbalanced forces?
100
All forces are described by these two actions
What is a push or a pull?
100
According to Newton's First Law, an object will remain at rest unless acted on by this.
What is an outside (external) force?
100
The minimum number of times to try an investigation?
What is three?
100
This simple machine is used to help wheel chairs enter porches or raised levels.
What is an inclined plane?
200
A way to measure the period between 2 events.
What is time?
200
The amount of gravity is determined by this variable.
What is the mass of an object?
200
Unless acted on by an unbalanced force, an object will remain in motion for this long.
What is forever?
200
The type of graph that best shows the speed of an object.
What is a line graph?
200
A knife is this type of simple machine.
What is a wedge?
300
Distance divided by time
What is speed?
300
The description of forces when there is no change in motion (including constant speed).
What are balanced forces?
300
According to Newton's Second Law, additional force is needed to move an object as this other variable increases.
What is mass?
300
The 2 items needed to determine speed of an object.
What is a stopwatch and a measuring tape?
300
This simple machine helps raise a flag up a flagpole.
What is a pulley?
400
A force that acts on another object by rubbing or touching it.
What is friction?
400
Three non-contact forces
What are gravity, magnetism, and electricity?
400
The formula associated with Newton's Second Law of Motion.
What is Force equals mass times acceleration?
400
The system of measurement used for science practices.
What is the metric system?
400
A screwdriver is this type of simple machine.
What is a wheel and axle?
500
An object in the background used to describe the motion of another object.
What is a point of reference?
500
The four forces of flight.
What are lift, drag, thrust, and weight (gravity)?
500
This is a description of the forces acting on a car in constant motion.
What are balanced forces?
500
The description of the line on a line graph when there is no motion.
What is a horizontal line?
500
Archimedes used this type of simple machine to lift water to higher levels, although it is normally used to hold things together.
What is a screw?