Is gravity attractive or repulsive?
attractive
static electricity
Are magnetic forces repulsive or attractive?
they are BOTH
A magnet can be made by running ____________ through a wire.
current, electric current
A device that converts kinetic energy into electric energy is a
generator
Where does gravity pull objects on Earth?
Toward the center of Earth
What kind of charge does a neutral object have?
an equal amount of both positive and negative charges
If two south poles of a magnet are pointed at each other will they attract or repel?
repel
Increasing the voltage source will
increase the strength of the magnet
Increasing the distance from a magnet _________ the force.
What does weight measure?
the amount of gravitational force on an object
False, they are both repulsive an attractive.
Do opposite poles of a magnet attract or repel?
attract
True/False. Electromagnets are temporary.
True, they can be turned on and off.
Electricity can be generated when a turbine is twirled between two
Magnets
What is mass?
The amount of matter an object is made of
Do like (the same) poles attract or repel each other?
repel
The core of the Earth creates a magnetic force. True or False?
TRUE
iron, nickel, cobalt
Which atomic particle creates electric charge?
electrons
What two factors determine the strength of the gravitational force between two objects?
mass and distance
What is an electric current?
a FLOW of particles with an electric charge
Can a north pole of a magnet exist without a south pole?
no
A coil of wire wrapped around an iron core is called a
solenoid
What three things did you need to build an electromagnet?
battery, wire, and a core