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Cosmic Background Radiation

Last updated over 1 year ago
11 questions
Warm up
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What is the approximate age of the Universe?

Cosmic Background Radiation Video - How Do Scientists Study the Birth of the Universe?
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What is cosmic inflation?

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What evidence are scientists looking for that would help support the cosmic inflation theory?

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Why is the new camera important to the astrophysicists’ work?

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Why did the astrophysicists choose Antarctica as the site to set up the telescope?

Regents Questions
Cosmic Microwave Background Radiation
In the 1920s, Edwin Hubble's discovery of a pattern in the red shift of light from galaxies moving away from Earth led to the theory of an expanding universe. This expansion implies that the universe was smaller, denser, and hotter in the past. In the 1940s, scientists predicted that heat (identified as cosmic microwave background radiation) left over from the Big Bang would fill the universe. In the 1960s, satellite probes found that cosmic microwave background radiation fills the universe uniformly in every direction, and indicated a temperature of about 3 kelvins (K). This radiation has been cooling as the universe has been expanding.
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Scientists infer that the universe began approximately

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Which graph best shows the relationship of the size of the universe to the temperature indicated by the cosmic microwave background radiation?

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Cosmic microwave background radiation is classified as a form of electromagnetic energy because it

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The current temperature indicated by the cosmic microwave background radiation is (Use the temperature chart on ESRT pg. 13)