Practice Quiz Electromagnetic Spectrum and Space Technology

What is the correct order of the visible light spectrum starting with the longer wavelength?

• Red, yellow, orange, blue, violet, indigo

• Violet, indigo, blue, green, yellow, orange, red

• Green, yellow, blue, indigo, red, orange

• Red, orange, yellow, green, blue, indigo, violet

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Nora is working in a chemistry lab and is given an unknown gas mixture to analyze. She uses a spectroscope to compare the emission spectra of the unknown mixture with those of four known gases: Gas A, Gas B, Gas C, and Gas D. Based on the spectral lines shown, which gases are present in the unknown mixture?

• Gas B & Gas D

• Gas C & Gas B

• Gas A & Gas D

• Gas D & Gas C

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What waves have the lowest energy? 

• Gamma rays
• Visible light waves
• Radio waves
• X rays

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Black holes emit tremendous amounts of energy which result in astronomers using many different means of technology to gather information. Instruments such as the GALEX satellite and Spitzer Space Telescope use different parts of the electromagnetic spectrum to gather data about these strange celestial objects. To view black holes, the GALEX typically operates at a frequency of about 1.3 X 10¹⁵ Hz while the Spitzer Space Telescope operates at 2.2 X 10¹² Hz.

Which two portions of the electromagnetic spectrum are astronomers using to detect information about black holes?

• Ultraviolet and X-Ray

• Gamma Ray and X-Ray

• Ultraviolet and Infrared

• Infrared and Radio

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Aria, a scientist, observed a celestial object emitting a wavelength of 3 x 10^-10m. What type of telescope did Aria have to use to view this?

• Radio wave

• Infrared ray

• X-ray

• Gamma Ray

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In 1965, two Bell Labs engineers used a microwave receiver to receive radio transmissions but were unable to eliminate a persistent background noise that seemed to affect the receiver no matter where they pointed it in the sky, day or night. After cleaning the receiver and ruling out other possibilities, they realized their discovery was cosmic background radiation (like heat left over from an explosion) from the Big Bang. They eventually received the Nobel Prize for Physics in 1978.

What does this story show about the development of scientific theories?

• Scientific discoveries are rarely rewarded

• Accidents almost always happen

• Scientist compete with one another and rarely cooperate

• New technology can lead to new discoveries

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Maya wants to observe distant stars and galaxies, so she decides to use a reflecting telescope like the one shown in the diagram. What is an advantage of using this type of telescope?

• It can gather more light

• It can focus images perfectly

• It can detect very small objects

• It can use very small lenses

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Grace is an astronomer who needs to place a telescope in a location which will avoid all atmospheric interference. What would be the best location for her telescope?

• In deserts

• In valleys

• In cities

• In space

Arjun is learning about electromagnetic waves in his science class. He wants to know which type of electromagnetic wave has the HIGHEST energy. Can you help him choose the correct answer?

• gamma

• microwave

• radio

• x-ray

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What type of spacecraft is the Hubble Space Telescope?

• space station

• space shuttle

• space probe

• artificial satellite