Answer ALL questions, 1 - 22
Mastery Assess It 11
1.
What is the difference between a reflecting optical telescope and a refracting optical telescope?
Reflecting and refracting optical telescopes use a different mechanism to magnify distant objects. A reflecting optical telescope uses a mirror, and a refracting optical telescope uses a lens.
The lenses in a reflecting telescope bend light toward a single point, the focal point. The refracting optical telescope uses a mirror to collect light and create a metter image of what you are trying to view.
The reflecting optical telescope uses a secondary mirror to magnify objects. The refracting optical telescope uses a primary mirror to magnify objects.
The reflecting optical telescope uses a primary and secondary mirror to magnify objects. The refracting optical telescope only uses a primary mirror to magnify objects.
2.
Which method of medical diagnostic imaging uses radio waves to change the alignment of the spin of hydrogen nuclei?
X-ray
ECG
MRI
CAT scan
3.
The primary colors of pigments are cyan, magenta, and yellow, and the secondary pigment colors are red, green, and blue. If you add the colors yellow and blue together, what is the resulting color, and why?
white, all of the color is absorbed
white, all of the color is reflected
black, all of the color is absorbed
black, all of the color is reflected
4.
The default wavelength for any AM radio station is
meters. What would the default frequency be for an AM radio station? Use the formula:
or
.
Hz
Hz
Hz
-
Hz
5.
What is the most efficient type of light?
incandescent
fluorescent
LED
halogen
6.
Which type of communication device only uses one frequency to communicate?
GPS
cordless telephone
cell phone
walkie-talkie
7.
What types of waves are electromagnetic waves?
mechanical waves
compression waves
transverse waves
sound waves
8.
When John broke his arm, the doctor took an x-ray of John’s arm. John had never seen an x-ray before. He asked the doctor how the x-ray was able to show his bones but not his skin and other tissue. Which explanation would the doctor best provide to John?
X-rays have higher frequency than gamma rays and therefore pass through skin and bone.
X-rays have lower frequency than infrared light and therefore penetrates through the bone.
X-rays have higher frequency than visible light and therefore can pass through skin and tissue but not through the bone.
X-rays have lower energy than visible light and therefore produce a black background behind the bone image.
9.
What is the difference between specular reflection and diffuse reflection?
Specular reflection occurs when a wave bends around an object. Diffuse reflection occurs when a wave moves from one material to another, and the speed of the wave changes, causing it to bend.
Specular reflection occurs when a wave moves from one material to another, and the speed of the wave changes, causing it to bend. Diffuse reflection occurs when a wave bends around an object.
Specular reflection occurs when waves reflect off a smooth surface; however, diffuse reflection occurs when waves reflect off a rough surface.
Specular reflection happens when the waves bounce off an object in all directions, which happens with objects that are not smooth on the surface. Diffuse reflection occurs when the light bounces off a material so that all the waves are going in the same general direction.
10.
Calculate the speed of a gamma ray with a frequency of 3.0x1019 Hz and a wavelength of 1.0x10-11 m.
3.0x108 m/s
3.0x109 m/s
3.0x1019 m/s
9.0x1027 m/s
11.
Which do you observe first in a thunderstorm and why?
Lightning is observed first because the speed of light is faster than the speed of sound.
Lightning is observed first because the speed of sound is faster than the speed of light.
Thunder is observed first because the speed of sound is faster than the speed of light.
Thunder is observed first because the speed of light is faster than the speed of sound.
12.
What would be your image appearance on a concave mirror if you were standing at the center of curvature of the mirror?
Your image on the mirror would appear smaller and upside down.
Your image on the mirror would appear larger and upside down.
Your image on the mirror would appear larger and right side up.
Your image on the mirror would appear the same size and upside down.
13.
What is the speed of light in a vacuum?
3.40x102 m/s
3.00x108 m/s
it depends on the type of electromagnetic wave
6.70x1013 m/s
14.
Which waves on the electromagnetic spectrum have the longest wavelength?
x-rays
gamma rays
ultraviolet waves
radio waves
15.
Which statement describes the dual nature of light?
Light may eject either a proton or an electron from an atom.
Light exhibits characteristics and behaviors of both waves and particles.
Light can cause transformations between matter and energy.
The precise position and velocity of a photon, or packet of light, cannot be determined simultaneously.
16.
How does a digital camera record an image?
Electrical signals invert the image using a primary and secondary mirror to focus the image.
Electrical signals are used to send information about the images to the camera's computer.
The lens of a digital camera focuses light to form a real, inverted image on film in the back of the camera.
The lens of the digital camera magnifies the object then uses a primary and secondary mirror to focus the image.
17.
Why is a microscope or magnifying glass used to view objects close up instead of moving the object closer to your naked eye?
These instruments use reflection to focus the image that cannot be seen by the naked eye.
When an object is too close to the naked eye, the eye is unable to focus because it is unable to change shape and, therefore, unable to resolve the detail of the object.
The microscope and magnifying glass block out the light, which allows the naked eye to focus on the object.
These instruments use radio waves to focus the image that cannot be seen by the naked eye.
18.
The Global Positioning Satellite system (GPS) consists of 24 active satellites that orbit Earth. A recent development in this technology is the use of portable GPS devices in automobiles. These devices assist drivers by directing them to selected destinations. How has the application of GPS technology MOST likely affected society?
It has helped with the prediction of where traffic accidents might occur.
It has crowded the airways with instruments that make it dangerous for people traveling by air.
It has helped save lives by aiding emergency units in locating distress calls.
It has increased the travel time of people driving from one location to another.
19.
How would your vision be affected if you had hyperopia vision?
You would have blurry vision.
You would be able to see things in the distance clearly.
You would have 20/20 vision.
You would be able to see things in focus close, but not far away.
20.
In a word problem, you were given the value for the wavelength of a gamma ray. In that problem, how many other variables must you be given the value for in order to solve for frequency?
No additional variable values must be given.
One additional variable value must be given.
Two additional variable values must be given.
It is impossible to determine without reading the exact word problem.
21.
What is the relationship between frequency and wavelength?
As wavelength increases, frequency increases.
It depends on the type of electromagnetic wave.
As wavelength decreases, frequency decreases.
As wavelength increases, frequency decreases.
22.
What is the main factor to differentiate between plane, concave, and convex mirrors?
the angle of reflection
the curve of the mirror
the angle of incidence
the type of light