THIS IS With Your Host... AStatic Electricity BFlowing Electricity C- Magnetic Fields DTransform It! ETeacher’s Choice 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 What causes static electricity? A- when positive and negative charges no longer balance B- gaining electrons C- losing electrons D- when positive and negative charges balance A 100 What causes static electricity? A- when positive and negative charges no longer balance A 100 A ________ object repels a positively charged object. A- negatively charged B- positively charged C- neutrally charged A 200 A ________ object repels a positively charged object. B- positively charged A 200 What type of particles will gather near the bottom of a cloud before energy is released as lightning? A- neutral particles B- positive and negative particles C- negative particles D- positive particles A 300 What type of particles will gather near the bottom of a cloud before energy is released as lightning? C- negative particles A 300 Two objects that have the same charge ________ each other. A- repel B- attract C- stick to D- do nothing to A 400 Two objects that have the same charge ________ each other. A- repel A 400 What is the space around and electrically charged object called? A- magnetic field B- electric field C- electric force D- electric charge A 500 What is the space around and electrically charged object called? B- electric field A 500 Which of these would be a good conductor for a closed circuit? A- plastic B- rubber C- copper D- wood B 100 Which of these would be a good conductor for a closed circuit? C- copper B 100 A material that conducts electric current poorly is called.. A- an insulator B- a circuit C- a charge D- a conductor B 200 A material that conducts electric current poorly is called.. A- an insulator B 200 What would happen to the other light bulbs in the circuit if one light bulb burns out? A – The others will remain on. B- The others will go out. B 300 What would happen to the other light bulbs in the circuit if one light bulb burns out? B- The others will go out. B 300 Do new homes use electricity that arranged in a series or parallel circuit? A- Series circuits B- Both series and parallel circuits. C- Parallel circuits B 400 Do new homes use electricity that arranged in a series or parallel circuit? C- Parallel circuits B 400 A(n) ________________ will allow electric charges to flow without any interruptions. A- open circuit B- resistance C- electric field D- closed circuit B 500 A ________________ will allow electric charges to flow without any interruptions. D- closed circuit B 500 Where is a magnetic field the strongest? A- at the south-seeking pole B- at the north-seeking pole C- in the middle D- at both poles C 100 Where is a magnetic field the strongest? D- at both poles C 100 Why does a compass needle point in a north-south direction? A- The needle is lightweight. B- The needle is pulled in the middle by Earth’s equator. C- The needle reacts to Earth’s magnetic poles. C 200 Why does a compass needle point in a north-south direction? C- The needle reacts to Earth’s magnetic poles. C 200 What did Michael Faraday do when he discovered that changing a magnetic field created an electric current in a wire? A- He shared his invention with other scientists. B- He told no one of his investigation. C- He did not think he had discovered anything. C 300 What did Michael Faraday do when he discovered that changing a magnetic field created an electric current in a wire? A- He shared his invention with other scientists. C 300 What does this show? A- magnets attracting B- magnets repelling C- electric field C 400 What does this show? B- magnets repelling C 400 The _____________ are caused by charged particles being attracted to the strongest part of Earth’s magnetic poles. A- North Pole B- Northern Lights C- Northern Particles D- Northern Auras C 500 The _____________ are caused by charged particles being attracted to the strongest part of Earth’s magnetic poles. B- Northern Lights C 500 In a doorbell, electromagnets help covert _________ to magnetic energy to mechanical energy. A- mechanical energy B- static electricity C- electric energy D 100 In a doorbell, electromagnets help covert _________ to magnetic energy to mechanical energy. C- electric energy D 100 How can the strength of an electromagnet be increased? A- by using less current B- by using a smaller magnetic core C- by using a smaller magnet D- by using more turns in the metal coil D 200 How can the strength of an electromagnet be increased? D- by using more turns in the metal coil D 200 What is produced when a coiled wire is spun around a magnet? A- magnetic energy B- mechanical energy C- electrical energy D- geothermal energy D 300 What is produced when a coiled wire is spun around a magnet? C- electrical energy D 300 _______________ are often used in industry to lift heavy objects. A- Magnets B- Electromagnets C- Electric motors D- Permanent magnets D 400 _______________ are often used in industry to lift heavy objects. B- Electromagnets D 400 A generator uses magnets and wires to turn mechanical energy to _____________. A- static electricity B- electrical energy C- energy of motion D- hydroelectric power D 500 A generator uses magnets and wires to turn mechanical energy to _____________. B- electrical energy D 500 What is a charge in motion? A- parallel circuit B- electric current C- magnetism D- static electricity E 100 What is a charge in motion? B- electric current E 100 One advantage of a(n) __________ is that its magnetic field can be turned off. A- electric current B- permanent magnet C- electromagnet D- generator E 200 One advantage of a(n) __________ is that its magnetic field can be turned off. C- electromagnet E 200 Which of the following is NOT used to power generators? A- wind B- moving water C- hot rocks deep below earth’s surface D- static electricity E 300 Which of the following is NOT used to power generators? D- static electricity E 300 Lights are wired as shown. What happens to the circuit if one bulb burns out? A- Half of the bulbs light. B- All bulbs light. C- All but one light. E 400 Lights are wired as shown. What happens to the circuit if one bulb burns out? C- All but one light. E 400 If you break a magnet in two pieces, what might happen? A- The magnetic field disappears. B- Each piece has only one pole. C- Each piece has a north and south pole. D- One magnet has two north poles and the other has two south poles. E 500 If you break a magnet in two pieces, what might happen? C- Each piece has a north and south pole. E 500