Friction
A force that pulls objects towards Earth's surface is called?
Gravity
Something that keeps repeating is called?
Pattern
What causes objects to change in motion, direction, or speed?
Force
How do magnets attract each other?
Opposite poles
What makes magnets repel each other?
Same poles
What helps to reduces friction?
Lubricant
A collection of forces that result in a change in the objects motion is called?
Unbalances forces
What kind of forces are acting on you right now?
Gravity, pushes and pulls.
A force that can push or pull without touching is called?
Magnetism
What forces gets a train to move?
Powerful pushing or pulling force.
A force that occurs between 2 surfaces that are touching is called?
Ex. rubbing your hands together
Friction
When we say something is going to happen is to?
Predict
What type of forces act on an object that is not moving?
Balanced forces
Why do maglev trains ride smoother?
There is a reduced amount of friction.
Who builds machines or parts to create or improve ways to make work easier?
Engineers
A push or a pull between two objects that are touching each other is called?
Contact force
A push or a pull is called?
Force or applied force
What are attracted to a magnet?
Certain metals and other magnets
An object that is moving has what type of force?
Unbalanced forces
Magnets are used to levitate, or float the trains over the tracks. What are these trains called?
Maglevs
Forces that cancel each other out and produce no change in the objects motion is called?
Balanced forces
The process of an objects changing position is called?
Motion
What happens to objects that experience a push force?
They move away from each other.
What happens to objects that experience a pull force?
They move closer to each other.
How did Elijah McCoy's invention improve train travel?
It was a way of lubricating the engine, which meant that the train could make fewer stops.