Magnetic Force
What are the two poles on a magnet?
What is North and South.
List two sources of electrical currents.
Batteries, generators, other power supplies
An invisible force that pulls different objects towards each other.
What is Gravity.
This is the force that combines electric and magnetic forces.
What is Electromagnetism
The combination of all the forces acting on an object.
What is Net Force
Like poles of magnets _______________ and ________________ poles attract each other.
What is; repel and opposite
What particle is a positive charge and what particle is a negative charge.
What is a proton (positive) and electron (negative).
The force of gravity on earth is...
What is 9.8 meters/second squared
What are two ways you can strengthen an electromagnet?
What is wrapping the copper wire around the nail more times (more coils), use a stronger power source, increase the current or voltage.
What is the net force of someone pushing a box to the left with 37N of force.
What is 37N <----------
The further from the poles of the magnet the _______________ the magnetic field.
What is weaker.
Charged particles exert ______________ forces on each other when the charges are opposite and _____________ forces when there charges are the same.
What is attraction and repulsion forces
True or False
The gravitational force between two objects is larger when the masses of the objects are smaller.
What is False
What is one real life example of where we can see electromagnets being used?
What are Junk yards, sorting metal from non-metal, electric buzzers and bells
Look at the board in the front right of the room and right the answer on your whiteboard.
What is the Net Force on that box?
What is
What is the space around a magnet in which it can be felt by another magnet.
What is a magnetic field.
What is the physical field that surrounds electrically charged particles?
What is an electric field.
Any object with ___________ exerts a gravitational force on all other objects with ___________.
What is mass and mass
Draw a picture of an electromagnet and label it.
Mr. Joseph / Mr. Breese / Mrs. Werts will check it.
One person is pushing on a box with 70N of force to the right and the other person is pulling right with a force of 82N. What is the Net Force?
What is 152N to the ------>
What is the force exerted by magnets when they attract or repel each other.
What is Magnetism.
What is the flow of particles that are charged, moving through an electrical conductor or space.
What is an Electrical Current.
Gravitational Force is dependent upon two factors what are they?
What is Mass and Distance Apart
What is one benefit of using an electromagnet instead of a permanent magnet?
What is you can turn it on and off, you can make it stronger by coiling it around the nail more or by changing the power source.
Read the following problem on the board.
Write the direction of each force that is acting on the sled.
Friction - Left
Gravity - Down
Push - Right
Wind - Left