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WorksheetsSound Waves, Nature of Light
Total questions: 20
Worksheet time: 1hrs 6mins
Which of the following best describes the nature of light?
Light is both a wave and a particle.
Light is a wave.
Light is a particle.
Light is neither a wave nor a particle.
Light exhibits certain behaviors that are characteristic of any wave and would be difficult to explain with a purely particle-view. Which of the following are examples of this behavior? CHOOSE ALL THAT APPLY!
Light reflects in the same manner that any wave would reflect.
Light refracts in the same manner that any wave would refract.
Light undergoes interference in the same manner that any wave would interfere.
Light exhibits the Doppler effect just as any wave would exhibit the Doppler effect.
Which of the following IS NOT true of the phenomenon of "wave interference"?
Constructive interference occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction.
Wave interference is a phenomenon that occurs when two waves meet while traveling along the same medium.
The interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium.
Wave interference can be constructive or destructive in nature.
Which of the following IS NOT a human-induced crisis that is currently threatening the Earth and its inhabitants?
threat of impact from meteoroids and comets
over-population
climate change
pollution
ocean acidification
Which f the following statements is most accurate?
Human hunger is mostly caused by failures in getting the food to the people.
The Earth cannot produce enough food to feed all of its peoples.
Wasting food in the USA is not related to people starving in Africa.
The Earth will always be able to supply enough food to feed the population.
In what year was the first Earth Day celebrated?
1970
1995
2005
1776
A sound wave is created as a result of a ______________ object.
vibrating
stationary
compressed
longitudinal
All objects have a natural frequency or set of frequencies at which they vibrate.
True
False
A _______________ tends to vibrate at a single frequency, producing a very pure tone.
flute
tuba
human voice
bell
Sounds cannot be heard in outer space because sound waves require a medium, such as air or water, to travel through.
True
False
The greater the frequency of a sound wave, the higher the ____________ of the sound will be.
pitch
volume
timbre
speed
Longitudinal waves have two important features. _______________ are regions where particles are squished together. __________________ are regions where particles are spread apart.
Compressions, Rarefactions
Clumps, Voids
Transversions, Convertises
Crests, Troughs
When sound waves hit a wall, they often bounce back. The reflected waves can interact with the oncoming waves in a phenomenon called:
interference.
refraction.
dispersion.
compression.
Which of the following BEST describe this wave?
standing wave
longitudinal wave
compression wave
transverse wave
Sound travels at 344 m/s at sea level. An observer hears thunder 6.5 seconds after he sees the associated lightning flash. How far was the lightning bolt from the observer's position?
2236 m
52.9 m
1508 m
2946 m
This picture best illustrates:
light refraction.
light reflection.
Visible light, like all electromagnetic radiation, travels at a speed of 186,000 miles per second in a vacuum. The Sun is 93,000,000 miles from the Earth. How much time does it take for light to travel from the Sun to the Earth?
about 8 minutes and 20 seconds
about 2 minutes and 12 seconds
about 16 minutes and 4 seconds
about 11 minutes and 56 seconds
The diameter of the Earth at the Equator is about 25,000 miles. How many times can a beam of light circle the earth in one second? C = 186,000 miles per hour.
about 7.5 times
about 2.5 times
about 4 times
about 10 times
A light wave travels in only one plane.
True
False
Material objects cannot travel faster than the speed of light.
True
False
