3/23/10. What is an electrochemical cell? An electrochemical cell transforms… All cells have…(3 parts) A dry cell has… but a wet cell has… If you connect….

Slides:

Advertisements

Similar presentations

Investigations 3 and 4 Review. Investigation 3 I can build a series circuit and explain how the electricity flows through it. I can build a parallel circuit.

Advertisements

NATE and Cole's information Period Electromagnets Currents in wires create a magnetic field around the wire By turning the current on and off,

Electric Potential Energy 8.1. A _________ is a combination of electrochemical cells connected together (or a single electrochemical cell). Electrochemical.

Section 3.  Chemical energy is the energy stored in chemical compounds  In the 1780s, Luigi Galvani was studying the anatomy of a frog. He was using.

Electric Current Section 2.

Electricity & Work Chapter 13.

ELECTRICITY AND MAGNETISM. INSULATORS AND CONDUCTORS Conductors are materials that are good at carrying an electric charge. Good conductors of electricity.

5.6 (B) demonstrate that the flow of electricity in circuits requires a complete path through which an electric current can pass and can produce light,

OBJECTIVES: WARM-UP: More batteries/volts

Ohm’s law describes the relationship of current, voltage, and resistance.

Ohm’s law describes the relationship of current, voltage, and resistance.

1.Alternating current can be converted to ________ current using a ______. 2. Charges move easily through _____________ but cannot move through ___________.

Bozo Bucket Review Chapter 21 Chapter 21.

Electricity and Magnetism Atomic Review An atom consists of 3 particles:  Protons-positively charged  Neutrons-no charge  Electrons-negatively charged.

Electricity & Magnetism

The Control of Electricity in Circuits 10.2, 10.3 and 10.5.

When you finish turn to page 224 and begin reading about magnetism

Chapter 7 Review Test on Friday, December 7!. Magnetic field lines flow from a magnet’s  A. north pole to south pole  B. south pole to north pole 

Technician’s List Demos

A Unit 4 Review. When an object is charged, it has an imbalance of electrons. Static electricity is another term used to describe this. You can charge.

Jeopardy! More Magnets What about Magnets I love.

Electricity and Magnetism

Producing Electric Current

What is a conductor? What is an insulator? Agenda for Tuesday Feb 22 nd 1.Electricity notes/demo All late work is due by Next Friday, March 4 th.

Thursday 3/25/10.

Electromagnetism.

Current Electricity Chapter Electric Potential Energy  Energy is the ability to do work.  Kinetic energy is energy a moving object has because.

ELECTRICAL CELLS & CURENTS. DRY CELL & WET CELL Wet Cell – the electrolyte is a liquid (car battery) i. In a car battery, Electrolyte is sulfuric acid.

How is a permanent (reg.) magnet different from an electromagnet?? Describe how an electromagnet shows how magnetism & electricity relate to each other.

Alternating and Direct Current Direct Current (DC) is the one way flow of electrical charge from a positive to a negative charge. Batteries produce direct.

Electric Current Chapter 7 section 2.

Electricity & Magnetism Static, Currents, Circuits Magnetic Fields & Electro Magnets Motors & Generators.

Electromagnetism How can you make an electromagnet?

Current Electricity Part 2

Transmitting Electrical Energy Producing Electric Current When the electric energy is transmitted along power lines, some of the electrical energy is.

10.3 Electric Potential. Electric Potential Electric potential refers to the amount of energy that electrons possess in a circuit.

Electric Current – Flow of electrons through a ___________. The number of _________ flowing through the conductor determines the amount of _________ ________.

Sammy G, Madi M, and Jade R Period:41.4. What is a solenoid?  A.) a solid object  B.) an electric current  C.) a magnet  D.) a current carrying coil.

Making a Voltaic Pile Generating Voltage: Creating energy for a cell cell.

Unit D Review Electricity. How can you explain two charged objects “sticking” to one another? Opposite charges, movement of electrons!

Chapter 21.  Electromagnetic induction is the process of generating a current by moving an electrical conductor relative to a magnetic field.  This.

Electricity and Magnetism

Electrochemical Reactions. Anode: Electrons are lost due to oxidation. (negative electrode) Cathode: Electrons are gained due to reduction. (positive.

What is Electromagnetism?

Electromagnets D. Crowley, 2008.

What is Electromagnetism Chapter 3 Section 1 Pages

8.1 ELECTRIC POTENTIAL ENERGY AND VOLTAGE BC Science 9: p

Batteries Lesson 2.3. Key Concepts What was the first battery made of? How does an electrochemical cell work?

Electricity & Magnetism Ch 9 6 th grade. How do charges interact? Atoms contain charged particles called electrons (-) and protons (+). If two electrons.

Warm Up – copy the objective Have you ever felt a shock when you touched someone or something? Describe your experience.

Chapter 3 Magnetism.

To Do List 3/14 Items Needed Textbook Daily Science Journal Notebook Pen or Pencil Paper Agenda Opening: Mini Activator Work Session: Guided Notes Closing:

Electricity & Magnetism Static, Currents, Circuits Magnetic Fields & Electro Magnets Motors & Generators.

Electrochemical Reactions. Anode: Electrons are lost due to oxidation. (negative electrode) Cathode: Electrons are gained due to reduction. (positive.

Batteries Chapter 2, Section 3 p The First Battery Energy can be transformed from one form to another – Batteries transform chemical energy into.

8.1 Electric Potential Energy and Voltage.  A battery is a combination of electrochemical cells connected together  Electrochemical cells convert chemical.

Electricity & Magnetism

The Control of Electricity in Circuits

BASIC PRINCIPLE When electricity flows in a wire a magnetic field is formed around the wire. The stronger the current the stronger the magnetic field will.

Electromagnetism.

Magnetism & Electromagnetism

MAGNETISM AND ITS USES Producing Electric Current

Bell work Electric Charge

ELECTRICITY AND MAGNETISM

Electromagnets Lesson 3

Electricity and Magnetism

5.6 (B) demonstrate that the flow of electricity in circuits requires a complete path through which an electric current can pass and can produce light,

Learning Objective To be able to:

Presentation transcript:

3/23/10

What is an electrochemical cell? An electrochemical cell transforms… All cells have…(3 parts) A dry cell has… but a wet cell has… If you connect…. You will create a… Explain how we created cells and batteries during class to demonstrate this process.

An electrochemical cell is a device that transforms potential chemical energy into kinetic electrical energy. Electrochemical cells are made of two electrodes, the positive electrode (cathode) and the negative electrode (anode), and an electrolyte. Dry cells have an electrolyte paste and wet cells have a liquid electrolyte. If you were to connect two or more cells together it would create a battery. In class we made a penny cell using pennies, aluminum foil, and saltwater. The penny cell made only a little electric current by itself, but could be stacked up with other people’s cells to become a battery which created more electricity. We also made a wet cell with copper, zinc, and vinegar water. Finally, we used fruit and vegetables as our electrolyte and created several cells. Hooking many of these cells together gave us enough electric current to light a small red light (diode).

Today’s Agenda Warm-Up: Key Question 16 – What is an Electrochemical Cell? Classwork: –Electromagnet Textbook Assignment –Electromagnet Variables (Website) Homework: –Step 4, Key Questions 11-15, Quiz 3 DUE FRIDAY!!! Conclusion: –What variables can be changed to strengthen an electromagnet?

Student Objective Saturday, November 21, 2015 Students will be able to… Explain changes you can make to increase the strength of an electromagnet.

Name: ________________ Class: ________________ Directions: Use pages of the electricity and magnetism textbook to answer the following questions. 1.What is a solenoid? 2.What can be placed inside a solenoid to strengthen the magnetic field? 3.What is an electromagnet? 4.What are the 4 ways that you can increase the strength of an electromagnet?

Name: ________________ Class: ________________ 1.What is a solenoid? 2.What can be placed inside a solenoid to strengthen the magnetic field? 3.What is an electromagnet? 4.What are the 4 ways that you can increase the strength of an electromagnet? A solenoid is a current carrying coil of wires which produces a magnetic field. Introducing a ferromagnetic (iron) material inside a solenoid will strengthen the magnetic field created when electric current is flowing. An electromagnet is a solenoid with a ferromagnetic core. It is a magnet created by electric current which you can change the strength of and turn on and off. There are many ways to increase the strength of an electromagnet. You can increase voltage, add more coils, make the coils tighter and neater, use thicker gauge wire, add a stronger ferromagnetic material for the core, and change the type of conducting wire. Directions: Use pages of the electricity and magnetism textbook to answer the following questions.

Name: ________________ Class: ________________ 1.What is a solenoid? 2.What can be placed inside a solenoid to strengthen the magnetic field? 3.What is an electromagnet? 4.What are the 4 ways that you can increase the strength of an electromagnet? Current carrying coil of wires. Ferromagnetic (iron) material. Solenoid with ferromagnetic core. Can be turned on/off and made stronger. More loops Tighter loops More voltage Stronger/more ferromagnetic core Directions: Use pages of the electricity and magnetism textbook to answer the following questions.

Name: ______________________ Date: _______________________ Class: ______________________ Use the following website to fill in the table and answer the questions about electromagnets. Power Supply (AC or DC) Volts (10, 50, or 100) Wire Gauge (Thick, Med, or Thin) Wire Type (Al, Cu, or String) # of Winds (0 – 100) Iron Filings Collected According to your website exploration, what are 3 things you can do in order to make an electromagnet stronger? 2.According to your website exploration, what are 2 different things you can do in order to decrease the strength of an electromagnet? Now go to the following website and use your knowledge to pick up the correct number of paper clips using an electromagnet. DO NOT USE THE HINT OPTION! 3.According to the website, each battery will pick up _____ clips and each set of 10 coils will pick up _____ clips.

HOMEWORK DUE FRIDAY 1.Project Step 4 2.Key Questions Quiz 3 – Electricity & Magnetism Always copy daily homework into your agenda.

Which of the following things would NOT result in a stronger electromagnet? ??? A.Increasing the loops (coils) from 20 to 40. B.Using thinner copper wire. C.Changing to a stronger ferromagnetic (iron) core. D.Changing from a 1.5 Volt energy source to a 9 Volt energy source.