Energy Conservation

What is a key advantage of nondepletable energy sources over nonrenewable energy sources?

• Nondepletable energy sources will not run out on human time scales.

• Electricity generated by nondepletable energy sources is consistently lower in price.

• Nondepletable energy is easier to use than fossil fuels.

• Use of nondepletable energy sources has no negative environmental effects.

• Nondepletable energy sources do not require complex technology to use.

Tags

NGSS.HS-ETS1-3

Which is a disadvantage of solid biomass as an energy source?

• Expensive costs that can be prohibitive in developing countries

• Emission of chlorofluorocarbons into the atmosphere

• Emission of particulate matter and carbon monoxide

• Release of more methane than other fuels

• Emission of more carbon dioxide than other fuels

Tags

NGSS.HS-ETS1-3

Which source of biofuel cannot currently be used at a large scale because of its high cellulose content?

• Corn

• Soybeans

• Sugar cane

• Switchgrass

• Algae

Which source for biodiesel production utilizes the least amount of energy to produce the greatest yield of fuel per hectare of land?

• Algae

• Switchgrass

• Corn

• Soybeans

• Sugar cane

Hydroelectric dams generate electricity by

• using the energy of the river to produce steam.

• using run-of-the-river systems, in which turbines are placed into the natural water flow.

• water impoundment, in which dam operators control the rate of water flow to turbines.

• using generators that are placed on the bottom of a river.

• converting the kinetic energy of the water impounded behind a dam into potential energy.

Tags

NGSS.HS-PS3-3

South-facing windows are an example of

• passive solar design.

• active solar energy.

• geothermal design.

• thermal inertia.

• wind power.

Tags

NGSS.HS-ESS3-4

NGSS.HS-ETS1-3

Which of the following is NOT a disadvantage of wind power?

• Deaths of birds and bats

• Reliance on batteries

• Noise from turbines

• Costs after initial set up

• Appearance of turbines

Tags

NGSS.HS-ETS1-3

Put the items below in correct sequence for using wind to generate electricity.<br />1 – A generator converts mechanical energy into electrical energy.<br />2 – Wind turns the wind turbine blade.<br />3 – A gear box transfers mechanical energy to a generator.<br />4 – Electricity is transferred to the grid.

• 1-2-3-4
• 2-1-3-4
• 2-3-1-4
• 2-4-3-1
• 4-2-3-1

Tags

NGSS.HS-PS3-3

Which is NOT a benefit of using wind energy over other renewables?

• The land used by a wind farm can also be used for other purposes.

• Wind farms do not alter water quality.

• Use of wind energy does not release greenhouse gases.

• Wind is a nondepletable resource.

• Wind turbines pose a threat to local wildlife.

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

Which is an aspect of geothermal energy?
I. Geothermal energy emits almost no carbon dioxide.
II. Geothermal energy is a renewable source of energy.
III. Geothermal energy can be used to produce heat and electricity.

• I only

• II only

• III only

• I and II

• I, II, and III