If You Stay on Earth While a Friend Races Off

question 85

Multiple Choice

If you stay on Earth while a friend races off in a rocket at close to the speed of light,then,according to special relativity,you will see a clock on the rocket appear to tick more slowly than the one on your wall.If your friend looks back at your clock,then,according to the same theory,the friend will see your clock appear to tick:

• A) at the same speed as the clock on the rocket.
• B) faster than the clock on the rocket.
• C) faster or slower than the clock on the rocket, depending on the direction of travel of the rocket compared with Earth.
• D) slower than the clock on the rocket.

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Definitions:

Thymine

A pyrimidine base found in DNA, pairing with adenine (A) through two hydrogen bonds to assist in stabilizing the nucleic acid structures.

Centromere

The specialized DNA sequence of a chromosome that links a pair of sister chromatids and where spindle fibers attach during cell division.

Duplicated Chromosomes

Chromosomes that have undergone replication, resulting in two identical copies joined together, crucial for cell division.

Purine

A nitrogen-containing compound that is one of the two types of bases found in DNA and RNA, the other being pyrimidine.