Entropy Quiz (https://www.youtube.com/watch?v=DxL2HoqLbyA)

What is the main concept that governs everything from molecular collisions to humongous storms and the direction of time?

• Light rays

• Warmth

• Energy

• Vitamin D

How much energy does the Earth radiate back into space relative to the amount it gets from the sun?

• More

• Less

• Equal

• Varies

What is the efficiency of Carnot's ideal heat engine?

• 100%

• 75%

• 50%

• Less than 50%

What was Jacob Bekenstein's proposal regarding black holes?

• They have zero entropy

• They have entropy proportional to their surface area

• They do not emit radiation

• They have infinite temperature

Why is there an arrow of time according to the video?

• Due to entropy increasing from unlikely to more likely states

• Due to the laws of physics

• Due to the Big Bang

• Due to the expansion of the universe

The Earth receives a steady stream of low entropy, concentrated bundled up energy from the sun.

• True

• False

The efficiency of an ideal heat engine depends on the design and materials used.

• True

• False

Black holes do not emit radiation and do not have a temperature.

• True

• False

The universe tends toward maximum entropy, leading to the heat death of the universe.

• True

• False

The arrow of time is determined by the increasing entropy of the universe.

• True

• False