Science Final Flashcards
Wave Speed Math Formula
Speed (in m/s)
————————–l————————–
Frequency (in Hz) l Wavelength (in m)
A wave in a disturbance that transfers energy from one place to another without transferring?
a) sound
b) matter
c) rarefactions
d) vibrations
b) matter
A water wave is an example of a?
a) electromagnetic wave
b) medium
c) mechanical wave
d) longitudinal wave
c) mechanical wave
Mechanical waves cannot travel through?
a) air
b) a vacuum
c) water
d) solids
b) a vacuum
A wave that travels perpendicular to the disturbance would likely be a
a) longitudinal wave
b) mechanical wave
c) surface wave
d) transverse wave
d) transverse wave
The highest points on a transverse wave represent the
a) rest points
b) troughs
c) crests
d) source of energy
c) crests
The lowest points on a transverse wave represent the
a) wavelengths
b) troughs
c) crests
d) amplitudes
b) troughs
The distance from crest to crest is measured as the
a) amplitude
b) crest height
c) rest position
d) wavelength
d) wavelength
When the particles in a medium move parallel to the direction that the wave travels you have a
a) transverse wave
b) parallel wave
c) longitudinal wave
d) particle wave
c) longitudinal wave
Longitudinal waves have compressions, this is where the particles are
a) closer together
b) farthest apart
c) resting
d) vibrating
a) closer together
Three types of mechanical waves would be
a) rope, water, sound
b) sound, water, seismic
c) sound, water, spring
d) rope, spring, water
b) sound, water, seismic
Electromagnetic waves can travel through empty space and
a) water
b) solids
c) matter
d) air
c) matter
Which measurement defines the amount of energy a wave has?
a) speed
b) amplitude
c) rest position
d) wavelength
b) amplitude
If a wave has a lot of energy it will have a lot of?
a) frequency
b) pitch
c) wavelength
d) amplitude
d) amplitude
What is another way to represent wavelength?
a) Hz
b) lambda
c) tambda
d) speed
b) lambda
The law of reflection states
a) when reflected from a surface, the angle of reflection is equal to the angle of incidence
b) angle of reflection is never the same as the angle of incidence
c) when reflected from a surface, the angle of reflection is always 45 degrees
d) when absorbed from a surface, the angle of reflection is equal to the angle of incidence.
a) when reflected from a surface, the angle of reflection is equal to the angle of incidence
What do we call it when energy by a wave is transferred to the medium through which it travels
a) transmission
b) absorption
c) refraction
d) diffraction
b) absorption
What is the term for the matter through which a mechanical wave travels?
a) medium
b) substrate
c) conductor
d) wave relay
a) medium
What is the area of low density in a sound wave called?
a) wavelength
b) rarefaction
c) compression
d) vibration
b) rarefaction
Why does sound travel at different speeds in different materials?
a) matter causes sound to echo
b) long wavelengths travel farther than short wavelengths
c) sound travels fastest in low density materials
d) because particles are farther apart in some materials than others
d) because particles are farther apart in some materials than others
Where is the eardrum located?
a) outer ear
b) middle ear
c) inner ear
d) between the brain and cochlea
b) middle ear
Which of these would likely be a longitudinal wave?
a) tsunami
b) sound
c) a rope on a door handle
d) cell phone signals
b) sound
Pitch describes the human perception of which property?
a) resonance
b) amplitude
c) frequency
d) overtones
c) frequency
Which property of a sound wave determines how close together the particles are in the compression region?
a) amplitude
b) frequency
c) wave length
d) wave speed
a) amplitude
Which phenomenon do musical instruments use to amplify sound?
a) beats
b) interference
c) resonance
d) doppler effect
c) resonance
the amount of sound energy that passes through a square meter of space in one second
Intensity
Sonar Signal Math Formula
Depth
—————————l—————-
Speed (in m/s) / 2 l Time (in s)
The lowest frequency at which a material naturally vibrates is called its
a) interference
b) overtone
c) base tone
d) fundamental tone
d) fundamental tone
Decibel Loudness Math Formula
Loudness (EX: 100) = 10 dB x 10 db
Ben Underwood was able to amaze scientists with his “echolocation” abilities. Dolphins use a similar echolocation to navigate the murky waters of the ocean. Why were scientists so impressed?
a) because sound travels better in water than air
b) because sound travels better in air than water
c) because ben was only 14
d) because nobody else has ever used echolocation
a) because sound travels better in water than air
What kind of obstacles were the most difficult for Ben to detect?
a) flat objects
b) obstacles lower than ground level
c) round objects
d) curved objects
b) obstacles lower than ground level
What happens to an electromagnetic wave as it passes from space to matter?
a) slows down
b) speeds up
c) no change
d) changes frequency
a) slows down
Which type of electromagnetic waves have the longest wavelengths?
a) ultraviolet
b) infrared
c) microwaves
d) radio waves
d) radio waves
Which type of electromagnetic wave does your body emit?
a) ultraviolet waves
b) infrared waves
c) radio waves
d) x-rays
b) infrared waves
Which three types of electromagnetic waves carry most of the Sun’s energy that strikes Earth?
a) infrared, light, and ultraviolet waves
b) ultraviolet waves, light, microwaves
c) light, ultraviolet waves, radio waves
d) X-rays, infrared, and gamma waves
a) infrared, light, and ultraviolet waves
What happens to a wave if its frequency decreases?
a) Its amplitude increases
b) Its energy decreases
c) Its speed increases
d) Its wavelength decreases
b) Its energy decreases
Which type of EM wave causes a chemical to glow in a fluorescent light bulb?
a) gamma waves
b) infrared waves
c) radio waves
d) ultraviolet waves
d) ultraviolet waves
Which list of EM waves is in the correct order from highest to lowest energy?
a) gamma rays, radio waves, infrared waves, microwaves
b) ultraviolet waves, gamma rays, X-rays, light
c) light, infrared waves, microwaves, radio waves
d) X-rays, gamma rays, ultraviolet waves, light
c) light, infrared waves, microwaves, radio waves
Of all the EM waves on the spectrum which one can penetrate matter the most?
a) radio waves
b) ultraviolet waves
c) X-rays
d) gamma rays
d) gamma rays
Electromagnetic waves transfer what from one place to another?
a) amplitude
b) light
c) matter
d) energy
d) energy
This color has the longest wavelength of all the colors in the spectrum
a) radio waves
b) red
c) infrared
d) violet
b) red
This color has the shortest wavelength of all the colors in the spectrum
a) ultraviolet
b) red
c) violet
d) indigo
c) violet
Light represents only a small portion of the total…
a) number of colors
b) light waves
c) electromagnetic spectrum
d) microwaves
c) electromagnetic spectrum
Which frequency would you most likely be able to hear without any aides?
a) 10 Hz
b) 100 Hz
c) 1000 Hz
d) 20,000 Hz
c) 1000 Hz
When the electric field is strongest in one direction, the magnetic field is strongest…
a) perpendicular to that direction
b) parallel to that direction
c) in the same direction
d) depending on the medium
a) perpendicular to that direction
Electromagnetic waves travel through space at the rate of…
a) 300,000 km/s
b) 300,000 ft/s
c) 300,000 m/s
d) 300,000 mm/s
a) 300,000 km/s
Scientists are studying an exciting way to travel beyond the solar system using…
a) Tesla technology
b) solar sails
c) space shuttles
d) the new green deal
b) solar sails
Your skin senses infrared waves with longer wavelengths as…
a) a red color
b) noise
c) pragmatic
d) warmth
d) warmth
Why can you get sunburnt on a cloudy day?
You can get sunburnt because ultraviolet waves are strong enough to pass through clouds, and they are strong enough to burn human skin.
A particle of electromagnetic radiation is called a…
photon
Light can carry through matter and…
space
A material that allows almost all the light that strikes it to pass through and form a clear image is…
transparent
A material that allows most of the light that strikes it to pass through and form a blurry image is…
translucent
A material through which light does not pass is…
opaque
he passage of light through an object is called…
transmission
According to the __________________, when a wave is reflected from a surface, the angle of reflection is equal to the angle of incidence.
law of reflection
Reflection of light from a smooth, shiny surface is called…
regular reflection
Reflection of light from a rough surface is called…
diffuse reflection
A mirror that curves inward is called a…
concave mirror
A mirror that curves outward, like the back of a spoon, is called a…
convex mirror
Index of Refraction Math
3.0 x 10^8 m/s / speed of light in that material
a transparent object with at least one curved side that causes light to change direction is a…
lens
Any instrument or object used to produce or control light is an…
optical device
an electric circuit with many paths…
parallel circuit
electric insulators…
do not conduct electricity well
a closed or complete oath in which an electric current travels…
electric circuit
when you provide an alternative path for electrical charge to travel into the ground…
grounding
an electric circuit with only one path…
series circuit
An unbalanced positive or negative electrical charge on an object…
static charge
when you have electrons concentrated on one end of n object the it is…
polarized
the amount of energy transformed by the circuit depends on the battery’s…
voltage
the process of an unbalanced electrical charge becoming balanced is called…
electric discharge
a measure of how difficult it is for an electric current to flow through a material…
electric resistance