Science: Electromagnetic Spectrum, Electricity and Magnetism
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Science: Electromagnetic Spectrum, Electricity and Magnetism - Leaderboard
Science: Electromagnetic Spectrum, Electricity and Magnetism - Details
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50 questions
| 🇬🇧 | 🇬🇧 |
| It keeps magnetism for a long time, creates its own magnetic field and is made of magnetized materials | Permanent Magnet |
| Made from materials easy to magnetize but loose magnetism immediately | Temporary (Induced) Magnets |
| The force of attraction or repulsion | Magnetism |
| Ends of a magnet where magnetic effect is strongest | Magnetic poles |
| Produced when magnetic poles interact | Magnetic force |
| T or F: The closer together the magnetic field lines are the lesser the magnetic force is | False-stronger (closer distance conveys higher magnetic force) |
| Fill in the blanks: When like poles are placed near each other, their magnetic fields _____ each other and there is a _____ point where combined field strength is ____ | Cancel, neutral, zero |
| Fill in the blanks: When the liquid in the earth flows, electric ____ move, which makes a magnetic ____ | Charges, forces (The core consists of Iron and Nickel which are magnetic materials) |
| What did William propose in 1600 | The earth is a magnet |
| T or F: Magnetic Poles ARE NOT aligned with geographic poles | True (Magnetic South is Geographic North vice versa) |
| How does a magnetic compass work? | Compass needle points north because its north pole is attracted to the earth’s magnetic pole |
| The region where particles penetrate the filed due to solar wind bombarding the earth's magnetic field | Van Allen Belts |
| Who showed a current carrying wire passes over a compass the needle which is a magnet the needle deflects | Hans Christian Oersted |
| Lorentz Force or the second right-hand rule is mostly applied to? | Freely moving charges (called cathode rays or otherwise push on electric currents) |
| In The Lorentz Force, the index refers to what? | Direction of the field |
| In The Lorentz Force, the middle finger refers to what? | Direction of the force |
| What can act just like a bar magnet? (magnetic domain, air solenoid, dough magnet) and from what rule is this from? | Air solenoid from Rule 3 Solenoid Rule |
| Instrument use for detecting the strength and direction of small current presence in a circuit | Galvanometer |
| Refers to the production of electric current due to the change of magnetic field | Electromagnetic Induction (increase the movement, Strength of the field/magnet, Increase the area of the coil, Increase the loops) |
| Temporary magnet made by wrapping a current carrying wire around an iron core | Electromagnet (these are useful because they can be turned on and off) |
| T or F: Light is an part of the electromagnetic spectrum <(0o0)> | True (visible light is the only waves humans can see ;)) |
| This is the type of wave EM (Electromagnetic Waves) fall under | Transverse (can travel w/o medium meaning they can travel through an empty space or vacuum like outer space<3) |
| T or F: The change in magnetic fields that causes electric fields to change causes both fields to vibrate causing an electromagnetic field | False- electromagnetic WAVE kac dapat |
| How fast d EM waves travel? | 300,000km or 300,000,000 m/s or #SpeedOfLight (can travel 8 times around the world in one second) |
| T or F: the process wherein white light can be split into a range of colors using a prism is called dispersion | True (there are millions of every color, every hue that is represented by me and you) |
| Fill in the blanks: The _____ (higher, lower) the frequency, the ____ (longer, shorter) the wavelength, the higher the frequency, the _____(shorter, longer) the wavelength | Lower, longer, shorter (like the red color on the rainbow, it is longest because it has the lowest frequency) |
| These waves have the lowest frequency and longest wavelengths | Radio Waves (fun fact, these waves are also emitted by stars and gases in space) |
| This measures the time it takes radio waves to travel from several satellites to receiver, determining the distance | Global Positioning System (GPS) switchin them global positions for yOoUu |
| These use short wave radio waves with a magnet to create an image | Magnetic Resonance Imaging (MRI) we gotta resonate |
| Arrange the seven types of EM waves in descending order from the highest frequency and shortest wavelength to the lowest frequency and longest wavelength | Gamma rays, x-rays, ultraviolet rays, visible light, infra red, micro waves, radio waves |
| Uses temperature that objects give off ex: thermogram | Infrared (means below red) |
| The only type of EM wave detected by the human eye | Visible light (violet-highest frequency; red-lowest) |
| This EM wave is emitted by the sun, can be used as sterilization as it kills bacteria and is the reason skin tans. | Ultraviolet waves (UV) |