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WorksheetsLight+Telescopes
Total questions: 26
Worksheet time: 3mins
Moving electric charges create magnetic fields.
True
False
c = 3x108 m/s
The speed of light
The Boltzmann constant
Coulomb's constant
The universal gravitational constant
What is the energy of 150 nm light?
(1240 nm eV ) / 150 nm
(1240 nm eV ) * 150 nm
0 eV
cannot be determined
Which light waves have the longest wavelength?
red light
radio waves
ultraviolet light
gamma rays
Which light waves have the highest frequency?
red light
radio waves
ultraviolet light
gamma rays
Which bands of electromagnetic radiation are blocked from reaching Earth's surface by our atmosphere?
visible light
radio waves
x-ray
gamma rays
Reflecting telescopes focus light using a...
mirror.
lens.
spectrometer.
filter.
Refracting telescopes focus light using a...
mirror.
lens.
spectrometer.
filter.
What are some disadvantages refracting telescopes?
expensive
large lens can be deformed by its own weight.
flaws in glass
chromatic aberration
The second largest radio telescope in the world (located in Puerto Rico) that collapsed after sustaining damage from hurricanes and earthquakes.
Arecibo Observatory
ALMA
SOFIA
Keck 1 and 2
Which telescope will use a powerful camera to survey the entire southern sky every 3 nights, making a time lapse movie of our observable Universe?
Extremely Large Telescope
ALMA
Vera Rubin Observatory
Keck 1 and 2
Which observatory, located in Chile, is made of 66, 12m radio telescopes that come together to form one giant telescope?
Arecibo Observatory
ALMA
SOFIA
Keck 1 and 2
Arecibo Observatory
ALMA
SOFIA
Keck 1 and 2
Which space telescope collected images in 1995 of a tiny and dark patch of sky, revealing thousands of distant galaxies.
Hubble Space Telescope
James Webb Telescope
Wide-Field Infrared Survey Telescope
Kepler Space Telescope.
What are some of the characteristics of a good location for building a telescope?
Calm air
Clear skies (few clouds for most of the year)
Dark skies (far from cities)
Dry
A galaxy moving toward the Earth would appear to be...
red shifted.
blue shifted.
A star moving away from the Earth would appear to be...
red shifted.
blue shifted.
Which equation would you use to calculate the temperature of a blackbody?
T= 3x106 nm*K / λmax
E = mc2
P2 = a3
E = 1240 eV nm / λ
Which equation would you use to calculate the energy of a photon?
T= 3x106 nm*K / λmax
E = mc2
P2 = a3
E = 1240 eV nm / λ
When an electron "drops down" to a lower energy orbit around an atom, it emits a ________.
proton
neutron
electron
photon
When you look at a galaxy that is 2 billion light years away, you see the galaxy as it was ___________ years ago.
2 billion
2 million
zero
20 billion
With a 39 meter primary mirror, the ________ will be the largest telescope ever built when it begins collecting light in 2028.
Extremely Large Telescope
Preposterously Big Telescope
Very Large Telescope
Supersized Telescope
The event horizon telescope is consists of radio telescopes around the world. Using a technique called very-long-baseline interferometry, this planet sized array achieves the angular resolution needed to observe _______.
supermassive black holes
superclusters
protogalaxies
cosmic strings
The Daniel K Inouye Solar Telescope (DKIST) is a 4 meter telescope that studies our home star. Where is the telescope located?
The Island of Maui, Hawaii
The Atacama Desert, Chile
The Canary Islands, Spain
Low Earth Orbit
What type of spectrum is shown in the graph?
blackbody or continuous
emission
absorption
What produces this type of spectrum?
stars
cold gas clouds with starlight shining through them
excited electrons in atoms, returning to their ground state
hot glowing objects
