Gravity
Electricity
Magnetism
Electromagnetism
Mixture
100

Is gravity attractive or repulsive?

attractive

100
Electric charge that doesn't flow 

static electricity

100

Are magnetic forces repulsive or attractive?

they are BOTH

100

A magnet can be made by running ____________ through a wire.  

current, electric current

100

A device that converts kinetic energy into electric energy is a 

generator

200

Where does gravity pull objects on Earth?

Toward the center of Earth

200

What kind of charge does a neutral object have?

an equal amount of both positive and negative charges

200

If two south poles of a magnet are pointed at each other will they attract or repel?

repel

200

Increasing the voltage source will 

increase the strength of the magnet

200

Increasing the distance from a magnet _________ the force.  

Decreases
300

What does weight measure?

the amount of gravitational force on an object

300
Electric forces are only attractive. True or False?

False, they are both repulsive an attractive.

300

Do opposite poles of a magnet attract or repel?

attract

300

True/False. Electromagnets are temporary.

True, they can be turned on and off.  

300

Electricity can be generated when a turbine is twirled between two

Magnets

400

What is mass?

The amount of matter an object is made of

400

Do like (the same) poles attract or repel each other?

repel

400

The core of the Earth creates a magnetic force. True or False?

TRUE

400
What materials are good for the electromagnet core?

iron, nickel, cobalt

400

Which atomic particle creates electric charge?

electrons

500

What two factors determine the strength of the gravitational force between two objects?

mass and distance

500

What is an electric current?

a FLOW of particles with an electric charge

500

Can a north pole of a magnet exist without a south pole?

no

500

A coil of wire wrapped around an iron core is called a 

solenoid

500

What three things did you need to build an electromagnet?

battery, wire, and a core

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