Flashcards
Science Flashcards for exam
Cards in this deck (12)
- 1What is a wave?Is a disturbance involving the transfer of energy from one place to another.
- 2Mention 3 characteristics for mechanical waves and what causes them.Medium: the material in which a wave travels.
Energy: a force that makes the wave move
Vibration: when the vibration moves through the medium. - 3What are 3 types of mechanical waves and their characteristics.Transverse Waves: move perpendicular, have 2 points, the higher point is called crest and the lowest point is called trough.
Longitudinal Waves: the medium vibrates on the same direction as the wave moves. (Sound)
Surface Waves: it separates two mediums. - 4Describe Amplitude, wavelength, frequency and speed.Amplitude: maximum distance the medium vibrates from the rest position
Wavelength: distance between two corresponding parts of a wave.
Frequency: the number of waves that pass a given point in a certain amount of time.
Speed: how far the wave travels in a given amount of time. - 5How is a wave's speed related to it's wavelength and frequency?The higher the speed its wavelength would be smaller and the frequency would be higher.
- 6How are amplitude and energy of a wave related?Bigger the energy, higher the amplitude.
- 7Explain the 3 ways in which a wave can change direction. Provide an example for each.Reflection: is when a wave can't pass through a surface so it bounces back. When you look yourself at the mirror.
Refraction; the changing of medium that causes the wave to bend. When you put a straw inside a water glass.
Difraction: when the wave moves around an object. When an ocean wave surrounds a barrier. - 8Compare and contrast constructive interference and destructive interference.Constructive: When waves combine forces (crest and crest) and make a wave with a higher amplitude.
Both: Combine their energy.
Destructive: When 2 waves combine, a smaller wave is formed. - 9What is the law of reflection?The law of reflection is that the angle of incidence and the angle of reflection need to measure the same.
- 10What are electromagnetic waves? Provide 3 characteristics.Is a transverse wave that involves the transfer of electric and magnetic energy.
1. It can travel through a vaccum
2. Is made up of vibrating electric and magnetic fields.
3. An electromagnetic wave can begin of a movement of charged particles. - 11How are electromagnetic waves similar and different?-They travel at the same speed of a vaccum.
-They have different wavelength and different frequencies.
-They are all part of an electromagnetic spectrum
-Only visible light can be seen - 12describe each ype of wave in the electromagnetic spectrum.
Information
- Description
- Flashcards on Science Flashcards for exam, created by Natalia Bonilla on 07/06/2016.
- Created by
- Natalia Bonilla
- Views
- 2
- Rating