What Is the Cosmic Microwave Background Radiation

question 216

Multiple Choice

What is the cosmic microwave background radiation?

• A) uniform background of radiation from electrons spiraling in weak intergalactic magnetic fields
• B) radiation left over from the Big Bang after the universe expanded and cooled
• C) almost uniform background of radiation from distant, unresolved, overlapping galaxies
• D) radiation from a very tenuous, ionized gas that fills the universe equally in all directions

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Definitions:

Interest Rate

The cost of borrowing money or the return for investing money, usually expressed as a percentage per annum.

Money Demand

The desire to hold cash or liquid assets rather than making investments, influenced by interest rates, income levels, and inflation.

Real GDP

The assessment of a nation's economic production once it has been corrected for changes in prices, such as inflation or deflation, showcasing the actual amount of goods and services generated.

Nominal Interest Rate

The interest rate before taking inflation into account, representing the raw interest rate that a borrower pays to a lender.