7.19 Review

Match the biofuel type with its organic components.

• Food crops

• First generation

• Algae

• Second generation

• Waste, oils and fats

• Third generation

• Woods and grasses

• Advanced

Categorize the types of biofuel creation methods.

• Combustion

• ___ is the creation of bio-gas and digestate by breaking down material with bacteria.

• Anaerobic digestion

• ___ is the creation of heat by burning biomass.

• Fermentation

• ___ is when syngas is created via heat, pressure, and partial combustion.

• Gasification

• ___ is when glucose is converted to ethanol fuel.

• Pyrolysis

• ___ is the creation of bio-oil and bio-char by decomposing using heat without oxygen.

Tags

NGSS.HS-PS1-4

Which biofuels are responsible for each statement?

• Second generation

• ___ biofuels may lead to water and soil degradation due to increased fertilizer use.

• First generation

• ___ biofuels may lead to deforestation.

• First generation

• ___ biofuels may cause food price spikes due to increased need for agriculture.

To what depth are geothermal wells drilled? Your answer should be a numerical range, and expressed in kilometers (e.g. 26-42 km).

How long are geothermal wells designed to last? Your answer should be a numerical range, and expressed in years (e.g. 26- 42 years).

What are two of the ways waste heat from geothermal wells can be used by the community?

• Drying timber

• Fish farms

• Heating greenhouses

• Hothouses/saunas/hotsprings

Tags

NGSS.HS-ETS1-3

NGSS.HS-ESS3-4

NGSS.HS-PS3-4

Complete the sentence: “Compared to oil and gas reserves, geothermal has _____ times as much energy.” Your answer should be expressed numerically.

Complete the sentence: “The energy of the sun is _____ times more than our annual demand for oil and gas.” Your answer should be expressed numerically.

Tags

NGSS.HS-ESS1-1

Compare the types of solar power.

• Photovoltaic

• ___ solar power uses semiconductors to convert light into electricity.

• Passive

• ___ solar power uses the sun’s heat to warm buildings.

• Thermal

• ___ solar power has mechanical components and circulates heat-carrying fluids.

• Active

• ___ solar power has no moving parts and the design is enhanced to capture the sun’s rays.

Tags

NGSS.MS-PS3-3

What is the minimum average annual wind speed necessary for potential wind turbine sites to be considered efficient enough to approve and construct? Your answer should be expressed numerically, in decimal form, as mph or m/s (e.g. 98.6 mph or 98.6 m/s).

Tags

NGSS.HS-ESS3-2

NGSS.HS-ETS1-2