Waves
Light
Sound
Experiment or Scientific Investigation?
Miscellaneous
100
Longitudinal or Transverse?
Transverse
100
Fill in the blanks:
Light travels quickest in _________________ and slowest in ___________________.
a vacuum; solids
100
True or False: Sound can be heard in space.
False. Sound cannot be heard in space because there is no air or other medium for sound waves to travel through. Space is a vacuum.
100
Where you test a hypothesis by changing one independent/test variable while keeping the other factors constant.
Experiment
100
Which part of the electromagnetic spectrum has the longest wavelength?
Radio waves
200
Longitudinal or Transverse?
Longitudinal
200
What 2 factors discussed affect light speed?
Density of the medium
Temperature
200
The speed of sound is greatest in ______________.
solids
200
Observing the natural world without interference. There are variables, but they are not manipulated/ altered by the scientist.
Scientific Investigation
200
Which part of the electromagnetic spectrum has the shortest wavelength?
Gamma rays
300
A sound wave is a _______________ wave.
longitudinal
300
What caused the pencil to refract?
Refraction is the process of light bending when it passes through different mediums at different speeds
300
The speed of sound exists but is lowest in ___________.
gases
300
Which of the following is the best example of an experiment?
a. Observing birds in their natural habitat
b. Surveying people about their eating habits
c. Testing the effect of different fertilizers on plant growth
d. Reading about the life cycle of a butterfly
c. Testing the effect of different fertilizers on plant growth
300
Sound wave wavelength and frequency have a(n) ______________ relationship.
Inverse
400
Longitudinal and transverse waves are both _________________ waves.
mechanical
400
An object would appear more blue outside because more blue light is _______________ while red and green light is _________________.
reflected; absorbed
400
Sound travels faster in _____________ than air.
water
400
What is the best example of an experiment?
-Measuring wavelengths of one type of light
-Measuring the change of wavelengths of light with different mediums
-Measuring the change of wavelengths of light with different mediums
400
Describe how scientific findings become widely accepted.
Scientists must obtain evidence through repetition and replication form multiple scientists. Then, scientists discuss and debate these findings, look at the evidence and data, and have to agree upon the new theory.
500
How are electromagnetic waves different from mechanical waves?
Mechanical waves require a medium to travel whereas EM waves do not
500
Match the letter to the light behavior. (Bonus points if you do A correctly!)
A. Transmission
B. Reflection
C. Refraction
D. Absorption
500
Why does sound travel faster in warmer air?
Warmer air molecules have more energy and vibrate faster
500
An experiment requires the manipulation of ___________.
Variables
500
Why did the "invisibility cloak" structure created by Andrea Alu appear invisible?
The structure absorbed light energy and no light is reflected, causing it to appear invisible.