WorksheetsRenewable Energy and Wind Turbines review for summative
Total questions: 24
Worksheet time: 12mins
What causes wind?
Uneven heating of the earth’s surface
Earth’s rotation
Air moving from areas of high to low pressure
All of the above
Hot air...
Moves to an area of high pressure
Sinks
Rises
Rotates
A generator...
Converts mechanical energy into electrical energy
Converts electrical energy into mechanical energy
Spins turbines
Increases turbine power
The speed and direction of wind at a specific location
Density
Efficiency
Velocity
Airfoil
At higher elevation, air density ...
Increases
Decreases
Stays the same
Which type of power is easiest to control to meet energy demand?
geothermal
Solar
Wind
fossil fuels
The industrial revolution was sparked with the invention of this.
wind turbines
steam engine
water mill
airplane
Angular velocity is how fast the blades are spinning while ______ is how hard the blades are spinning.
axis of rotation
air density
torque
tangential force
A measure of force that causes an object to rotate around a fixed axis of rotation.
angle of attack
tangential force
angular velocity
torque
Which of the following increases torque?
applying force close to the axis of rotation
applying force directly above the axis of rotation
applying force farther from the axis of rotation
decreasing lift while increasing drag
curved aerodynamic shape of a blade element that increases lift force while decreasing drag
chord
airfoil
span
swept area
The distance between the root and the tip of a blade
axis of rotation
airfoil
chord
span
For every action there is an equal and opposite reaction.
Newton's 1st law of motion
Newton's 2nd law of mtion
Newton's 3rd law of motion
Newton's 1st law of thermodynamics
The width of a blade element
chord
span
root
swept area
Which of the following is produced at the same rate as we use it?
coal
nuclear power
geothermal
natural gas
Which of the following is produced at a much slower rate than we use it?
geothermal energy
natural gas
solar energy
hydro power
Splitting uranium atoms to generate steam to turn turbines that is converted into electrical energy
geothermal energy
burning fossil fuels
nuclear power
hydroelectric dam
Harm to wildlife, noise pollution, high initial cost, and loss of energy as electricity travels are challenges of this type of power.
solar
wind
geothermal
nuclear
PV cells use _______ to set up an electrical field that controls the movement of electrons.
turbines
semiconductors
quartz
plutonium
This type of energy harnesses power from the earth's heat to heat water, and generate steam to turn turbines.
fossil fuels
solar
hydroelectric
geothermal
all of the following are disadvantages of geothermal energy EXCEPT
expensive to drill
limited locations
water pollution
could trigger small earthquakes
all of the following are disadvantages of nuclear power EXCEPT
relies on non-renewable sources
risk of nuclear meltdown
carbon emissions
radiactive waste
Which of the following is effective at controlling nature to meet energy demands?
solar panels
hydroelectric dam
wind turbines
none of the above
All of the following are challenges of solar energy EXCEPT...
toxic byproducts from using quartz to make silicon
making solar panels more efficient
expensive
increased electric bills
