wind and water power

_________ convert the energy of the wind into electricity.

• wind turbines

• hot air balloons

• wind mills

• solar cells

Tags

NGSS.MS-PS3-5

What is a wind farm?

• A farm that uses windpower

• Wind turbines grouped together in an area

• A plant that produces energy to move wind turbines

• A farm that produces wind

Tags

NGSS.MS-PS3-5

The basic elements of wind turbines are:

• blades, shafts, gears and generators

• towers

• blades

• gears and blades

What is a disadvantage of wind turbines?

• They pollute the air.

• They do not pollute

• They produce noise and may harm some animals

• They are "green" energy

What are advantages of wind energy? Check all that apply.

• clean energy

• nonrenewable

• renewable

• generate most of the electricity in the U.S.

Examples of wind power other than electrical generation might be.. (more than one answer)

• pumping water

• heating homes

• grinding grain

• doing homework

Wave and tidal energy harvesting system emits zero greenhouse gas emissions during its operation.

• True

• False

Tags

NGSS.HS-ESS3-4

NGSS.HS-ETS1-3

NGSS.HS-LS2-7

The wave and tidal energy harvester system could affect the marine ecosystem.

• True

• False

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of these is an opinion?

• Hydroelectric plants should not be built until more study is done.
• Hydroelectric plants use dams that block fish from swimming to sea.
• Hydroelectric plants use water to spin turbines that create electricity.
• Hydroelectric plants cost less to run that other kinds of power plants.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Can you produce current in a wire with a magnet that is sitting still?

• Yes; having a magnet near a wire is enough to excite the electrons

• No; the magnetic field has to be changing to excite the electrons

• No; magnets cannot create electricity

Tags

NGSS.HS-PS2-5