Unit 7 Quiz 2

Scientists are going to build a new telescope on the Earth, which of the following locations should they choose and why.

• Location 1, because it is closer to the city where they all live.

• Location 2, because it is far away from light pollution of the city and its elevation is higher limiting atmospheric interference.

• Location 1, because it limits atmospheric interference and uses the light from the city to enhance visibility of distant galaxies.

• Location 2, because the atmosphere helps to enhance visibility of starts and galaxies throughout the universe.

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Which of the following factors is most important when selecting a site for a new astronomical observatory?

• Proximity to major highways for easy access.

• Presence of a large local population for educational outreach.

• Low levels of light pollution and high altitude.

• Availability of local amenities and restaurants.

Why is it beneficial to build telescopes at high altitudes?

• To avoid interference from radio signals at lower altitudes.

• To take advantage of cooler temperatures at higher elevations.

• To reduce atmospheric interference and improve image clarity.

• To be closer to the stars and planets.

What is the primary reason for choosing remote locations for telescopes?

• To ensure the safety of the equipment from urban theft.

• To minimize light pollution and maximize observational quality.

• To provide a quiet environment for scientists to work.

• To reduce the cost of land acquisition.

Where would you place a telescope to avoid interference from the atmosphere?

• on top of a hill
• in outer space
• in a low valley
• along a river

Scientists have used technology in the form of remote rovers to landscape, take pictures and analyze air and material on Mars. What is a benefit to the use of this type of technology?

• Data is collected without exposing astronauts to unknown dangerous environments.

• The rover can mail samples back to Earth.

• We have not achieved any useful information from this type of technology.

• We can observe smells and taste the environment of mars with this rover.

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Dr. Kuiper is studying the electromagnetic radiation emitted by a star in the Andromeda Galaxy.  He has detected three different wavelengths of electromagnetic energy from the star.  Which of the following describes what Dr. Kuiper should see when he calculates the frequencies of these waves?

• The wave with the shortest wavelength will have the lowest frequency.

• 
  The wave with the shortest wavelength will have the highest frequency.

• The wave with the longest wavelength will have a frequency that is double its amplitude. 

• The wave with the longest wavelength will have a frequency that is one-half its amplitude. 

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Which of the following lists the types of radiation in order of decreasing energy?

• x-ray, infrared, radio

• 
  x-ray, radio, infrared

• radio, x-ray, infrared

• 
  radio, infrared, x-ray

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Which statement accurately compares a radio wave and an infrared wave?

• 
  A radio wave has a longer wavelength and a lower frequency than an infrared wave.

• A radio wave has a longer wavelength and a higher frequency than an infrared wave.

• A radio wave has a shorter wavelength and a lower frequency than an infrared wave.

• 
  A radio wave has a shorter wavelength and a higher frequency than an infrared wave.

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Which wave has the largest wavelength? (a)  

• B
• A
• C
• None (same wavelength)