Susan rolled the ball across the floor to Steve. What force started the ball rolling?
What is unbalanced force?
100
A push or pull on something.
What is force?
100
The force that is pulling the paper airplane to the ground.
What is gravity?
100
When performing an investigation, it is best to do it at least this many times.
What is 3 times?
100
What two objects do if they have opposite charges. One is positively charged and one is negatively charged.
What is attract?
200
The force that pulls us toward the Earth.
What is gravity?
200
The force (a push or pull) that touches or comes into contact with an object to change motion.
What is contact force?
200
The force between the molecules in the air and the airplane.
What is friction, or drag?
200
When an object is sitting at rest, the force of the object on the ground is...
What is balanced?
200
What two objects do if they both have a negative charge.
What is repel?
300
True or False: A balanced force exists when all the forces acting on an object result in the object staying at rest or moving at a constant speed in the same direction.
What is true?
300
Magnetism, electricity, and gravity are all examples of this type of force.
What is non-contact force?
300
The force happening when the plane is at rest after its landing.
What is a balanced force?
300
True or False: Objects with more mass will always hit the ground faster than objects that weigh less.
What is false?
300
The force that made the paper clip "float" on the string.
What is magnetism?
400
The force caused by surfaces rubbing against each other.
What is friction?
400
A device that makes a job easier to do by changing the amount of force, the direction of a force, or the distance through which a force moves.
What is a simple machine?
400
The force occurring when you throw the airplane.
What is thrust, or a push?
400
True or False: A ball will remain still unless an outside force, such as a kick or push, acts on it to make it move.
What is true?
400
The two ends of a magnet, where opposites are attracted to each other.
What are the north and south pole?
500
The force involved when two teams are playing tug-of-war and neither team can pull the other one over.
What is balanced force?
500
What you look at to tell something is in motion. (Hint: looking at a tree to know a bird is in motion).
What is a point of reference?
500
The four forces that affect the flight of the airplanes.
What is gravity (weight), friction (air resistance/drag), push or pull (thrust), and lift?
500
Newton's law that states moving objects will move forever and resting objects will rest forever unless some outside force acts on them.
What is Newton's First Law?
500
The force used when a magnetic field moves objects over a distance without actually touching then.