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WorksheetsUnit 4 Summative Practice
Total questions: 15
Worksheet time: 5mins
Which of the following statements about electromagnetic and mechanical waves is true?
Electromagnetic waves must travel through a medium, but mechanical waves do not require a medium.
Electromagnetic waves travel mostly through matter, and mechanical waves travel mostly through a vacuum.
Mechanical waves must travel through a medium, but electromagnetic waves do not require a medium.
Mechanical waves sometimes travel through a vacuum, and electromagnetic waves sometimes travel through matter.
Which of the following statements is true with regard to transverse and longitudinal waves?
Both transverse waves and longitudinal waves have motion parallel to velocity.
Transverse waves have motion parallel to velocity, while longitudinal waves have motion perpendicular to velocity.
Transverse waves have motion perpendicular to velocity, while longitudinal waves have motion parallel to velocity.
Both transverse waves and longitudinal waves have motion perpendicular to velocity.
Which of the following correctly shows the part of the wave that represents the wavelength?
Which of the following shows the correct order of the electromagnetic spectrum, from shortest wavelength to longest?
gamma ray → X-ray → ultraviolet → visible → infrared →
microwave → radio
radio → microwave → infrared → visible → ultraviolet →
X-ray → gamma ray
visible → infrared → ultraviolet → X-ray → gamma ray →
radio → microwave
microwave → X-ray → gamma ray → ultraviolet → visible
→ radio → infrared
Which wavelengths of light can human eyes detect?
ultraviolet waves
infrared waves
visible waves
X-ray waves
Directions: The picture below shows three light rays from the Sun that traveled toward Earth. Use the picture to answer any questions that follow. What happened to light ray Y?
It was absorbed by the carbon dioxide molecules and made
oxygen.
It was reflected by the ground and headed back into space.
It was refracted by the atmosphere due to changes in air
density.
It was scattered by the clouds due to a change in temperature.
What is the difference between a reflected and a diffracted sound wave?
A diffracted sound wave bounces back to the place of origin.
A reflected sound wave changes direction as it passes through
an opening.
A diffracted sound wave bounces back to the place of origin.
A reflected sound wave is absorbed as it passes through an
opening.
A reflected sound wave bounces back to the place of origin.
A diffracted sound wave changes direction as it passes
through an opening.
A reflected sound wave is absorbed by the medium. A
diffracted sound wave changes direction as it passes through
an opening.
The graphic shows a red light shining on objects Q and R. Object Q appears to be black, and object R appears to be red. Which of the following is correct?
Object Q refracts red light, and object R diffracts red light.
Object Q diffracts red light, and object R refracts red light.
Object Q reflects red light, and object R absorbs red light.
Object Q absorbs red light, and object R reflects red light.
What is the name given to the substance through which a wave travels?
crest
medium
trough
frequency
The data shows the speed of sound through air and sea water at 21°C. How does the speed of sound in seawater compare to the speed of sound in air?
The speed of sound is slower in sea water because the
molecules in sea water are closer to each other and less
dense.
The speed of sound is faster in sea water because the
molecules in sea water are closer to each other and less
dense.
The speed of sound is faster in sea water because the
molecules in sea water are closer to each other and more
dense.
The speed of sound is slower in sea water because the
molecules in sea water are closer to each other and more
dense.
Which statement best explains how a light wave behaves when moving from air to water?
It slow down and continues straight.
It speeds up and continues straight.
It slows down and bends.
It speeds up and bends.
Jessie creates a model of two waves that have the same amplitude as shown. Which description BEST compare the two waves?
Wave B has greater energy because it has a higher frequency
and a shorter wavelength.
Wave A has greater energy because it has a lower frequency
and a longer wavelength.
Wave A has less energy because it has a higher frequency
and a shorter wavelength.
Wave B has less energy because it has a lower frequency and
a longer wavelength.
Water is a chemical combination of hydrogen and oxygen atoms. Water is
a solution
a mixture
an element
a compound
What state of matter does B represent?
gas
liquid
plasma
solid
Jessica did an investigation into the state of the matter. As part of the investigation, Jessica wanted to change a liquid into a solid. What must she do to bring about this state change?
place the liquid in a different container
stir the liquid as quickly and thoroughly as possible
remove energy from the liquid so that its particles slow down
increase the energy of the liquid so that its particles move
faster
