Why are non-optical telescopes essential for astronomical observations?

Non-Optical Telescopes and Their Functions

Quiz
•
Physics
•
11th Grade
•
Hard
Shannon Howes
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
They are less expensive to build than optical telescopes.
Stellar objects emit radiation across the entire electromagnetic spectrum, and optical telescopes only detect visible light.
They can operate in all weather conditions, unlike optical telescopes.
Non-optical radiation travels faster through space, allowing for quicker observations.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a significant advantage of radio telescopes over optical telescopes in terms of their primary dish construction?
Radio telescope dishes must be made of highly polished glass for precise reflection.
Radio telescope dishes can be made of wire mesh, which is cheaper and lighter, because radio waves have longer wavelengths.
Optical telescopes require larger primary mirrors, making them more difficult to construct.
The primary dish of a radio telescope does not need to reflect waves to a focal point.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a primary disadvantage of a single radio telescope compared to an optical telescope regarding image clarity?
Radio telescopes are more susceptible to atmospheric interference.
Radio telescopes have a very poor resolving power due to the long wavelengths of radio waves.
They cannot be used during the day, limiting observation time.
The parabolic dish of a radio telescope suffers from significant spherical aberration.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do astronomers overcome the poor resolving power of individual radio telescopes?
By using larger individual parabolic dishes, often made of glass.
By placing them in orbit to avoid atmospheric interference.
By linking multiple radio telescopes together to form a single, larger effective telescope.
By using advanced digital signal processing to enhance the image resolution.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of a preamplifier in a radio telescope system?
To convert radio waves into visible light.
To reflect radio waves to the aerial.
To amplify weak radio signals without adding significant noise.
To transmit information for analysis.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are infrared telescopes often placed in space or in high, dry locations on Earth?
To avoid interference from visible light.
To minimize the absorption of infrared radiation by water vapor in the atmosphere.
To reduce the need for a primary concave mirror.
To allow for easier maintenance and coolant replenishment.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it challenging to manufacture ultraviolet (UV) telescopes?
UV radiation has a longer wavelength than visible light, making mirrors less effective.
UV radiation is easily absorbed by water vapor, requiring specialized materials.
UV radiation has a shorter wavelength than visible light, requiring mirrors to be more parabolic and precise.
UV telescopes require extremely low temperatures to operate efficiently.
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