Energy on Earth

Question 1

What are triatomic molecules?

Answer 1

• compound
• 2+ kinds of atoms

Question 2

What are examples of positive feedback?

Answer 2

• water vapor (GHG)
• glaciation

Question 3

What are some examples of negative feedbacks?

Answer 3

• basic infrared (T^4)

Question 4

Why are clouds complicated?

Answer 4

• high clouds: reflect solar energy (cool)
• low clouds: keep in infrared (warm)

Question 4

where do we get energy from?

Answer 4

• fossil fuels (not renewable): oil, gas, coal, uranium (supernovas)
• renewable: biofuels (can grow back, real-time, as fast as we use them)
• inexhaustible: solar, wind (powered by the sun), hydro (powered by the sun), fusion (drives the sun, putting together nuclei)

Question 5

What time is high tide when the moon is full?

Answer 5

noon or midnight

Question 6

how do we generate electricity?

Answer 6

• coal (before)
• gas (now)
• wood
• hydro
• solar
• geothermal

Question 7

Which country uses the most energy per capita? (from least to most)

Answer 7

1. Iceland
   *US higher than China (surpassed Europe)

Question 8

How does the US use its energy?

Answer 8

transportation, industry, residential/commercial
*1/3 each

Question 9

Why can Pennsylvania export energy?

Answer 9

Rivers (generates)