If You Compared the Diameter of the Earth (13,000 Km)to

question 6

Multiple Choice

If you compared the diameter of the Earth (13,000 km) to 1 second,what unit of time would be equivalent to the size of our Galaxy,whose diameter is ? __________,which is the length of time between now and when __________.

• A) 3 million years;man's ancestors first began to walk upright
• B) 30,000 years;humans first arrived in the Americas
• C) 400 years;Galileo used a telescope to demonstrate that Jupiter had moons that revolved around it
• D) 4 billion years;the Solar System was born

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