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Electromagnetic Spec
Mr. Bellerillo: Sound/Light study guide
| Question | Answer |
|---|---|
| The HIGHEST POINT of a wave is called the? | CREST |
| The LOWEST POINT of a wave is called the? | TROUGH |
| A measure of the amount of ENERGY a wave is carrying is called? | AMPLITUDE |
| How do you measure the amplitude of a wave? | Measure from the X-AXIS to the CREST |
| The distance from CREST to CREST or TROUGH to TROUGH is a measure of the? | WAVELENGTH |
| The number of waves that pass in one second is known as the? | FREQUENCY |
| What is the unit used to measure frequency? | HERTZ (Hz) |
| If 20 waves pass in 1 second, what is the frequency? | 20 Hz |
| If 200 waves pass in 5 second, what is the frequency? | 40 Hz |
| If the frequency increases, what happens to the wavelength? | GETS SHORTER |
| How is an electromagnetic wave created? | Electrons gain energy, speed up and move to a higher energy level, release the extra energy in the form of an electromagnetic wave and the electrons returns to its normal energy level. |
| Name the waves of the electromagnetic spectrum from the lowest energy wave to the highest. | RADIO, INFRARED, VISIBLE, ULTRAVIOLET, X-RAY, GAMMA |
| Which wave has the LONGEST wavelength? | RADIO |
| Which wave has the HIGHEST frequency? | GAMMA |
| Which wave is the only wave that we can see? | VISIBLE |
| What are the colors of the visible spectrum? | RED, ORANGE, YELLOW, GREEN, BLUE, INDIGO, VIOLET |
| Which wave is the only wave to carry HEAT? | INFRARED |
| Which wave causes sunburns? | ULTRAVIOLET |
| Plants use this wave to conduct photosynthesis? | VISIBLE |
| Doctors use this wave to determine if you have a broken bone? | X-RAY |
| Cell phones use this type of wave to carry a sound wave? | MICROWAVE |
| True/False: Electromagnetic waves are made-up of an electric field and a sound wave. | FALSE |
| True/False: An electromagnetic wave is created when a NEUTRON moves between energy levels. | FALSE |
| True/False: Vitamin D is produced in the body as a result of ultraviolet waves. | TRUE |
| Sound waves require a ______________ to travel from place to another. | MEDIUM |
| What type of wave is a sound wave? | LONGITUDINAL WAVE |
| The part of a sound wave where the molecules are compacted together? | COMPRESSION |
| The part of a sound wave where the molecules are NOT compacted together? | RAREFACTIONS |
| Waves are created because of ______________. | VIBRATIONS |
| The unit that equals 1 Wave per second | HERTZ |
| LOUDNESS of a sound depends on ______________. | AMPLITUDE |
| PITCH of a sound wave depends on ____________. | FREQUENCY |
| When a sound moves TOWARD a reciever or the reciever moves TOWARD the sound the pitch will do what? | INCREASE |
| When pitch changes due the movement of sound, it is known as the ________________________. | DOPPLER EFFECT |
| Sound waves travel the fastest through which phase of matter? | SOLIDS |
| Sound waves over 20,000 Hz are known as? | ULTRASONIC |
| Sound waves below 20Hz are known as? | INFRASONIC |
| Humans can hear frequencies between? | 20 Hz -20,000 Hz |
| Thermal cameras use what type on wave to see at night? | INFRARED |
| Lasers use what type of wave? | VISIBLE LIGHT |
| A light particle is known as a? | PHOTON |
Created by:
jbellerillo
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