Electricity
Which of these in an insulator?
plastic
copper
silver
What is plastic?
This force occurs when there is an attractive and repulsive force between two poles.
What is magnetic force?
Which of the following could be used as the core of a simple electromagnet?
drinking straw
iron core
aluminum core
What is an iron core?
If two objects with static charge are attracted, what do you know about them?
What is opposite charge?
Two unlike charge particle will _____________ each other
What is attract?
Electric current flowing through a wire produces
What is a magnetic field?
The magnetic field of a magnet is ____________ further away from the magnet.
What is weaker?
Which of these forces works only by combining electric and magnetic forces?
What is an electromaget?
In a static discharge, which particles move from one object to another?
What are electrons?
Static electricity is:
What is build up of charge?
What is the purpose of an electric motor?
What is electrical energy to mechanical energy?
A scientist observed that the needle of a compass moved when it was placed near a wire carrying an electric current. What did this observation show?
What is a magnetic field?
What is the purpose of an iron core in an electromagnet?
What is to make a magnet stronger?
When a plastic rod is rubbed with wool, why does the wool acquire a positive charge?
What is electrons move (from wool to rod)?
Movement of static charges that is temporary is
What is induction?
What is the purpose of a generator?
What is mechanical energy to electrical energy?
When a magnet is broken in half you are left with this.
What are 2 magnets?
A student is investigating how changing the size of the core of an electromagnet affects its strength. Which of these is most likely the dependent variable in the student's investigation?
A balloon is rubbed all over with wool. The balloon will now attract wool because the balloon and wool
What are opposite charges?
The process of an unbalanced electric charge becoming balanced is called
What is electric discharge?
The force of repulsion between two like-charged particles will increase if the distance between the particles is
What is decrease?
Maglev trains use magnet fields to travel up to 600 miles per hour. Magnets on the bottom of the train and on the tops of the rails have similar magnetic poles. Based on properties of magnets, how do these magnets affect the train?
What is levitate? (also acceptable any answer that reflects this word)
Which electromagnet would have the most strength?
10 coils
20 coils
30 coils
5 coils
What is 30 coils?
Which is an example of static discharge?
thunder
motor
generator
lightning
What is lightning?
When the movement of a static charge is made permanent by this means?
What is conduction?