Show:
Magnetism
Magnetic Earth
Electricity
Batteries and Circuits
Electromagnetism
100
The attraction and repulsion forces between objects.
What is magnetism?
100
Earth is compared to this type of magnet.
What is bar magnet?
100
Electric charge is the property of these. Bonus 100 if you can correctly name the charges for each.
What is protons (positive) and electrons (negative)?
100
He built the first electric battery.
Who is Alessandro Volta?
100
The relationship between electricity and magnetism is this.
What is electromagnetism?
200
Any material that attracts iron or materials that contain iron.
What is a magnet?
200
True or false, the Earth geographical north and south poles are in the same place as the magnetic north and south poles? Double Jeopardy*The region of the Earth's magnetic field that is shaped by solar wind.
What is false? Double Jeopardy*What is magnetosphere?
200
The interaction between charges is called this.
What is electricity?
200
Batteries change chemical energy into____________ energy.
What is electrical?
200
The three characteristics that a magnetic field produced by a current has.
What are that the field can be turned on and off, have its direction reversed, and have its strength changed?
300
If let to hang freely on a string a magnet will always point________
What is north?
300
The Earth's magnetic field is so strong it can create magnets out of this type of material.
What is ferromagnetic?
300
Describe the difference between electric force and electric field. No need to form it in a question.
Electric force is the attraction or repulsion between electric charges. The electric field is the region around a charged object in which the electric force occurs?
300
True or false. Physical reactions occur inside electrochemical cells. Double Jeopardy*Draw an electrochemical cell, label the three parts.
What is false (chemical reactions)? Double Jeopardy*Should look like a large cylinder with two long electrodes, liquid electrolyte, and the terminal (part of electrode above the liquid level) labeled.
300
The types of magnets used in computers and doorbells.
What are electromagnets?
400
The ends of a magnet are called this. Two unlike ones attract each other, two like ones repel each other.
What is magnetic poles? (poles is acceptable)
400
The items and location of the items that scientists studied that proves that the Earth's magnetic poles change positions over time.
What is rocks at the bottom of the sea?
400
True or false In static electricity charges build up on an object, but they do not flow continuously. Double Jeopardy*There are three methods of transferring charges built up by static electricity. Name them.
What is true? Double Jeopardy*What are friction, conduction, and induction?
400
Write and solve using Ohm's law. In a circuit there is a 0.7A current in a light bulb. The voltage across the bulb is 14V. What is the bulb's resistance? Remember to show your work!
What is Resistance=14V _____ = 20 Ohms 0.7A
400
Electrical energy is changed into this when a current is placed in the magnetic field. Thus producing motion.
What is mechanical energy?
500
A spinning electron produces a ___________________ that makes the elctron behave like a tiny magnet in an atom. Double Jeopardy*The charge of an electron is ___________
What is magnetic field? Double Jeopardy*What is negative charge?
500
Draw a picture of the Van Allen belts.
Drawings should look like doughnuts.
500
The spark we associate with static electricity is produced by this. It is the loss of static electricity as charges move from one object to another. Lighning is an example of it, but thunder is not.
What is static discharge?
500
Describe the difference between a series circuit and a parallel circuit. No need to form it in a question.
In a series circuit there is only one path for the current to take, in a parallel there are several paths for the current to take.
500
Direct current and alternating current are two types of induced current. You can induce a current in these two ways.
What is move the conductor through the magnetic field, or move a magnet through a coil of wire?