WorksheetsRenewable Energy Sources
Total questions: 24
Worksheet time: 12mins
What are renewable energy sources primarily derived from?
Fossil fuels
Solar irradiation
Tidal forces
Name two types of renewable energy that are not derived from solar energy.
Solar and wind energy
Wind and tidal energy
Geothermal and tidal energy
What percentage of the solar spectrum is in the visible range?
25%
47%
52%
What unit is used to measure irradiance?
Newton
Wh/m² or J/m²
W/m²
List the four types of irradiation.
Direct and indirect
Global, direct, diffuse, reflected
Irradiation and reflection
What instrument is used to measure global solar irradiance?
Barometer
Pyranometer
Anemometer
How is wind created?
By ocean currents
By the uneven warming of the atmosphere
By gravitational forces
Name three types of anemometers used to measure wind speed.
Sonic, Doppler, Cup
Cup, propeller, hot-wire
Pressure, cup, Doppler
What does the wind profile power law describe?
Wind speed at different temperatures
Wind speeds at different heights
Wind speeds at different times of day
What is the formula for wave energy flux?
P = T²
P = (ρg²H²T) / 64π
P = V²R
What are the key variables in wave energy?
Wind height and speed
Wave height and period
Water density and temperature
What is a typical application of a wind rose?
For predicting solar energy
To show wind direction frequencies
For measuring temperature
What kind of energy is primarily derived from the gravitational forces of the moon and sun?
Wind energy
Tidal energy
Geothermal energy
Name a device used to measure wave height.
Radar
Buoys
Thermal sensors
What global organization provides a renewable energy atlas for data collection?
IRENA
World Meteorological Organization
Global Energy Agency
What type of wind instrument uses the Doppler effect?
Pressure sensor
Doppler anemometer
Sonic anemometer
Explain the significance of Peak Sun Hours (HPS) in solar energy.
Energy per square meter
Energy per hour
Hours of direct sunlight
What is albedo?
Solar reflection
The fraction of sunlight reflected by a surface
The change in solar spectrum
How does terrain roughness affect wind speeds?
It increases wind speed
It decreases wind speed
It creates turbulence
What is the significance of wave period (T) in determining wave energy?
It's inversely proportional to energy
It's directly proportional to energy
It's unrelated to energy
What instrument is commonly used to measure wind speed?
Pyranometer
Anemometer
Wave buoy
What is diffuse solar irradiance?
Solar radiation reflected from the ground only
Solar radiation directly received from the sun
Solar radiation scattered by the atmosphere
Which renewable energy source uses heat from the Earth's interior?
Geothermal energy
Wave energy
Biomass energy
What does a wind rose primarily indicate?
The intensity of solar radiation
The distribution of wind directions and speeds
The height and period of ocean waves
