How Do Scientists Estimate How Old the Solar System Is

question 30

Multiple Choice

How do scientists estimate how old the solar system is?

• A)They make a guess: no one really knows how old the solar system is.
• B)They measure the speeds and distances of galaxies, and calculate the time it took for them to travel that distance.
• C)They measure the abundances of radioactive elements in meteorites, and use their half- lives to calculate the age.
• D)They look up the answer in a book.
• E)They measure how fast the Sun is losing energy, and how much energy it has to lose.

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