Forces
What is the name of the force taking place when an object is moving forward ?
Thrust.
What is one magnetic material ?
Iron, nickel, cobalt etc...
What is the chemical symbol for oxygen ?
O²
What is the type of friction that is applied when an object is moving ?
Air resistance.
In what direction does the magnetic field go ?
From the north to the south pole.
What is current ?
An electric current is a flow of electrons through a circuit.
What is the chemical symbol for water ?
HO²
What os the force that resists motion between two surfaces in contact called ?
Friction.
Which poles must be facing eachother to attract eachother ? Two of the same or two diffeerent ones ?
North and South.
What is the unit for current ?
Amps.
What unit is used to measure weight ?
Newtons.
What is the force of attraction between two masses called ?
Gravitational force.
How can you simply make an electromagnet ?
You wrap insulated wire around a piece of iron or steel, connect it to a battery, and when electricity flows, the metal becomes magnetized.
What is the voltage ?
The voltage is the force that makes electrons flow.
What is energy ?
Scientists define energy as the ability to do work.
What is the force that that holds protons and neutrons together in the nucleus called ?
Nuclear force.
What is an electromagnet ?
An electromagnet is a magnet that can be turned on or off by electricity.
How do you measure resistance ?
Voltage devided by current.
What is a force ?
A force is a push or pull that can make an object move, stop, change direction, or change shape.