Vocabulary
A ________ occurs between two objects.
force
Give two examples of a pulling force.
Teacher will determine correct answers.
What is it called when magnets pull to one another?
attract
How do you place magnets so that they will attract one another?
opposite poles near each other - opposites attract
What force comes from the Earth?
gravity
A force happens when there is a ___________.
change or stop of an object
What is it called when magnets push apart?
repel
If two teams are playing tug o' war but the rope is not moving, what is happening?
the forces are balanced - both teams are using the same amount of force to pull the rope
A person who solves problems by designing solutions, is called an ____________.
engineer
Give an example of a non-touching force.
magnetic force or force of gravity
What type of magnet is used on the floating train?
electromagnet
copper - penny, aluminum, gold, silver, lead, brass and titanium
When more than two forces cause a change to occur, this is referred to as a ___________ reaction.
chain reaction
A lamp is sitting on a table. What forces are acting on the lamp?
the force of the table - a touching force and gravity
What is the most important difference between an electromagnet and the magnets in our science kits?
an electromagnet uses electricity and turn on and off but our science kits magnets do not
How is it that the floating train rises off the tracks?
The electromagnet is turned on, and it's force is stronger than gravity. This is an unbalanced force that allows the train to move off the track.
Pedaling a bike is called a ___________ force.
pushing
If forces are _________________, an object will not move.
balanced
When a magnetic force is stronger than a gravitational force, what is happens?
the magnets cause an object to move
How does the floating train stay floating above the track as it moves?
The force of gravity and magnetic force are equal which keep the train floating above the track.