Wind Energy

When the wind blows, the air movement is caused by:

• the movement of the Earth

• the storms over the ocean

• day and night changes of sunlight

• local heating and cooling of the earth

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Land and sea breezes are examples of:

• warm air and cool air moving

• convection cell circulation of air

• warm air rising

• oceans are cooler than land

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Windmills and wind turbines move because:

• warm air rises against the blades

• convection currents push air onto the blades

• moving air pushes on the blade, slowing the air

• moving air going around the blades, pulls them along

Tags

NGSS.MS-ESS2-6

The kinetic energy of the wind is transferred to the wind turbine blade

• and is changed to potential energy when it hits the wind turbine blade

• and the blade gains all the kinetic energy

• and the wind loses all its kinetic energy

• when the wind collides with the blade and the wind loses kinetic energy

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

Wind mills and wind turbines have different size blades because:

• different wind speeds transfer amounts of kinetic energy dependent on blade speed

• different purposes require different designs

• different materials were available to build the windmill or wind turbine

• all of the above

Tags

NGSS.MS-ETS1-1

The wind is blowing, but the wind turbine is not moving, reasons for this are:

• the wind is too strong or is too weak for the size of the wind turbine

• maintenance on the turbine requires a lockdown

• bird migrations are taking place this week

• all of the above

Wind energy is considered renewable because:

• wind turbines can be easily replaced

• no carbon dioxide or water vapour is produced during operation

• no waste heat energy is produced

• there is a continuing supply of wind energy

Tags

NGSS.MS-ESS2-6

Which answer best completes this sentence correctly?

A flow chart that shows the energy transformation occurring in a wind turbine is best represented by:

• heat energy → electrical energy + sound energy

• gravitational potential energy → electrical energy + heat energy + sound energy

• solar energy → electrical energy + heat energy + sound energy

• kinetic energy → electrical energy + heat energy + sound energy

Tags

NGSS.MS-PS3-5

Which answer best completes this sentence correctly?

Wind turbines do not contribute to the enhanced greenhouse effect while they are being used because:

• wind turbines produce only a minimal amount of waste heat energy.

• wind turbines do not produce any carbon dioxide gas.

• wind turbines are very efficient.

• wind turbines do not damage the ozone layer.

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

A solar panel is used to deliver electrical energy to a lamp. Which diagram shows the correct way of connecting a voltmeter to measure the voltage across the lamp?

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