Env. Science · Unit 6 · Paper 1

Energy Resources & Consumption unit test

A test on this unit alone, marked as a percentage and a letter grade — for the test your class is actually sitting, rather than for May. Answer everything, then submit once: seeing the answer to question 3 before attempting question 4 makes the final percentage meaningless.

Paper 1 Paper 2 Paper 3

Each paper is built from this unit’s 22 terms and is the same for everyone, so a teacher can assign “Unit 6, Paper 1” and every student sits the identical test. Multiple choice is marked objectively; the written sections you mark yourself against the model answer and rubric.

Suggested time 37 min 34 points0/17 attempted

Cogeneration

Fossil fuel formation

CAFE standards

Biomass and biofuels

Energy efficiency of conversion

Coal types and quality

Geothermal energy

Wind energy

Solar energy

Coal combustion pollutants

Passive vs active solar

Nuclear fission

Short answer 1. Define or explain: Energy conservation

3 pts

Short answer 2. Define or explain: Renewable vs nonrenewable

3 pts

Short answer 3. Define or explain: Hydraulic fracturing

3 pts

Short answer 4. Define or explain: Energy return on investment

3 pts

Free response

10 pts

A 600-MW coal-fired power plant operates at 35% thermal efficiency with a capacity factor of 0.80. The coal it burns releases 30 MJ of energy per kilogram.

Calculate the plant's average power output, using the capacity factor.

Calculate the plant's annual electricity output in kWh.

Convert that annual output to megajoules.

Calculate the thermal energy input required, using the plant's efficiency.

Calculate the mass of coal burned per year, in kilograms.

Convert that mass to metric tons.

Describe ONE environmental consequence of operating this plant, including its mechanism.

Describe a SECOND, different consequence, including its mechanism.

Identify a specific technology or policy that would reduce one of those consequences.

Explain the mechanism by which that measure reduces it.