characteristics of waves
Movement of transverse and longitudinal waves particles and energy
t/electromagnetic: right angle (particles= side to side; energy to the right)
l: particles= side to side; energy to the right
Draw a high pitched sound and low pitched sound
Look at science not paper
What are the characteristics of the left side of the em spectrum
The left is low frequency, large wavelengths, low energy. Freq and energy increase as it goes right and wave leg goes down
Wave speed equation
Speed (m/s)= frequency (Hz) x wavelength (m)
Draw/ explain: transverse, longitudinal, electromagnerice, meschanical, and compression waves
Answers may vary
Draw a loud and soft sound
Look at science notes paper
What do the colors do that are not transmitted through transparent and translucent objects?
They are absorbed and scattered
Name the em spectrum waves in order from left to right (include the colors too)
Radio, microwave, infrared, visible (roygbiv), ultraviolet, x ray, gamma
What happens to the light plane mirrors, concave mirrors, and convex mirrors reflect?
Plane mirrors reflect light waves straight, concave mirrors reflect light to focus into a central point, convex mirrors reflect light spread out
How are waves created
By a disturbance of vibrations in the medium or in th electric and magnetic fields. The vibrations transfer energy from one location to another.
Examples of reflected, refracted, and diffracted sounds
Reflected: echo, navigation by animals, underwater direction
refraction: change in sound when your head is underwater
diffracted: hearing sound around corners, through doorways, or different rooms
what is the difference between transparent, translucent, and opaque objects?
(what makes them like that)
How much light they reflect vs. how much light they transmit (moving of electromagnetic waves (light) through a material)
How are rainbows formed
They are formed when white light is bent (by a prism or water droplet)and since different colors have different wavelengths they bend differently so the colors are separated
The speed of a wave is dependent on...
Its medium
What is a medium (give an example??)
Is the matter that a wave travels through. Ex. Air, water, ground. any state of matter
How ar high and low pitches made using different instruments?
Smaller instruments= higher pitch
larger= low pitch
based on light 300, how much light is reflected and transmitted with...
1. Transparent
2. translucent
3. Opaque
1. Transmits nearly all the light that hit them so you can see the other side
2. Transmit some light but scatter it so you can see through them but not clearly
3. Reflect or absorb all the light that strikes them and they do not transmit any so you can’t see through them
How are the colors of the rainbow arranged
increasing frequency/ decreasing wavelength
Explain constructive and destructive interference
Constructive: when waves with the same amplitude and frequency, combine to make a bigger wave
destructive: when wave cancel each other out
Name one difference and one similarity between mechanical and electromagnetic waves
Unique to Mechanical Waves
- require some form of matter as a medium
- cannot travel in a vacuum
- include water waves, sound, earthquakes, waves on a slinky, etc.
Unique to EM Waves
- do NOT require a medium
- CAN travel in a vacuum, such as outer space
- all listed on the EM spectrum, based on wavelength/frequency and energy
Similarities of Both Types
- transfer energy from one place to another without moving the matter
- can both travel in matter, and their speed is based on the medium they travel through - Speed = wavelength x frequency
Provide the properties of sound that depends on one another
Amplitude: loudness or intensity
frequency & wavelength: pitch
speed: depends on the medium (extra)
What determines the color of an .... object
1. Transparent
together
2. Translucent
3. Opaque
1 & 2= By the wavelengths of light that is transmitted through them
3. By the wavelengths of light they reflected
Opaque object: by the wavelength they reflect and absorbs the other wavelength and transparent and translucent object: by the color of light they transmit
What happens to light rays when they go through a concave and convex lenses?
Concave: spreads light rays out
convex: focuses light rays