1 / 25

Review: Physics

1 st term. Review: Physics. Question 1: Which material(s) can NOT be magnetized?. copper (Cu) nickel (Ni) iron (Fe) cobalt (Co). Question 2: Where is the magnetic force strongest?. At the poles. In the centre. On top. It's equally strong everywhere.

raymondreynolds
Download Presentation

Review: Physics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 1st term Review: Physics

  2. Question 1: Which material(s) can NOT be magnetized? • copper (Cu) • nickel (Ni) • iron (Fe) • cobalt (Co)

  3. Question 2: Where is the magnetic force strongest? • At the poles. • In the centre. • On top. • It's equally strong everywhere.

  4. Question 3: How can you demagnetize a magnet? • by rubbing it. • by heating it. • by shaking it. • by colouring it.

  5. Question 4: What can be used to show the magnetic field? • compass needles • paper scraps • aluminium • iron filings

  6. Question 5:There is no such thing as... • a magnetic field. • a magnetic monopole. • an electromagnet. • a permanent magnet.

  7. Question 6:Which animals do NOT have a magnetic sense? • elephants • sharks • pigeons • migratory birds

  8. Question 7:Where does magnetism come from? • from the adhesive forces between molecules. • from the protons attracting neutrons. • from the electrons moving around the atomic nucleus. • from electric current.

  9. Question 8:How can you magnetize a piece of steel? • by placing it near a magnet. • by rubbing it with one end of a magnet. • by heating it. • by placing it in a coil of wire and pass current through the coil.

  10. Question 9:The magnetic field of a current-carrying coil is similar to... • the magnetic field of a current-carrying wire • the magnetic field of a ring magnet • the magnetic field of a bar magnet • the magnetic field of a horseshoe magnet

  11. Question 10:The experiment that showed that every electric current produces a magnetic field was conducted by... • Isaac Newton • Michael Faraday • Hans Christian Ørsted • Albert Einstein

  12. Question 11:What do you need to build an electromagnet? • a volt meter • a wire • a power supply • an iron core

  13. Question 12:In which device is there no electromagnet? • electric bell • electric motor • compass • loud speaker

  14. Question 13:In order to keep an electromotor rotating after half a turn you need... • a turbine. • a coil. • a commutator. • a dynamo.

  15. Question 14:A generator converts... • electric energy into kinetic energy. • radiant energy into electric energy. • dinetic energy into radiant energy. • kinetic energy into electric energy.

  16. Question 15: Which physical principle does a generator use? • law of conservation of energy • induction • magnetism • refraction of light

  17. Question 16:Which of the following is a DC source? • power socket • battery • solar cell • accumulator

  18. Question 17:What is the frequency of AC current in the mains in Europe? • 100 Hz • 100 Volts • 50 Hz • 230 Volts

  19. Question 18:A device for converting current and voltage is called... • transformer. • generator. • uniformator. • transistor.

  20. Question 19:An efficient power plant makes use of... • power-heat-coupling. • current-heat-coupling. • force-current-coupling. • light-current-coupling.

  21. Question 20:A renewable energy resource is... • coal • wood • oil • gas

  22. Question 21:Which is NOT a greenhouse gas? • methane • oxygen • CFCs • carbon dioxide

  23. Question 22:An advantage of nuclear power plants is the fact that... • they use renewable energy resources. • they can be built in a short period of time. • they do not emit CO2. • all of the garbage can be recycled.

  24. Question 23:Wood is called CO2-neutral because • it is a natural energy resource. • it takes up as much CO2 when growing as it emits when burned. • it does not emit CO2 when growing. • burning it does not emit greenhouse gases.

  25. CONGRATULATIONS!!!!!

More Related