Solar Radiation and Atmospheric Effects Quiz

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What is the term for the sun's apparent location in the sky east or west of true south?

Declination angle

Altitude angle

Azimuth angle (correct)

Zenith angle

Which angle defines the off-south position in the horizon?

Solar declination

Azimuth angle (correct)

Zenith angle

Altitude angle

What determines the height of the sun above the horizon?

Azimuth angle

Altitude angle (correct)

Solar declination

Zenith angle

When does the shortest solar day typically occur for places in the northern hemisphere?

Around December 21 (winter solstice) Signup and view all the answers

During which phenomenon should the length of the day be theoretically equal to the length of the night?

Spring equinox Signup and view all the answers

What is the angle formed between the plane of the equator and a line drawn from the center of the sun to the center of the Earth called?

Solar Declination Signup and view all the answers

During which celestial event is the declination angle equal to 0?

Spring Equinox Signup and view all the answers

What is the angle between the sun and the local horizon directly beneath the sun known as?

Altitude Angle Signup and view all the answers

In terms of its reference, when is the azimuth angle positive?

When the sun is in the east Signup and view all the answers

What causes the seasonal variation of the solar declination angle?

Axial Tilt of Earth Signup and view all the answers

What is the declination angle denoted by?

δ Signup and view all the answers

At what point is the Earth nearest the sun during its orbit?

Perihelion Signup and view all the answers

What is the tilt equal to for the highest average insolation on a PV module?

Latitude Signup and view all the answers

Which of the following days marks the summer solstice?

June 21 Signup and view all the answers

What would be the variation in distance on July 4 from the aphelion point?

$152 - 4$ million kilometers Signup and view all the answers

What is the typical unit for peak sun hours?

MJ/m² Signup and view all the answers

Which type of radiation reaches the earth surface directly from the sun?

Direct radiation Signup and view all the answers

What represents the sum of direct and diffuse radiation in solar radiation components?

Global solar radiation Signup and view all the answers

If the Air Mass is 1.5, what are the values of h1 and h2?

h1=1, h2=1.5 Signup and view all the answers

What is the term used to describe the sun's height above the horizon?

Altitude Angle Signup and view all the answers

What is the relationship between solar declination, latitude, and zenith angle?

Solar declination is directly proportional to latitude and inversely proportional to zenith angle Signup and view all the answers

How does the altitude angle of the sun change throughout the day at a specific location?

It reaches its peak at noon and then decreases Signup and view all the answers

How does the seasonal variation of solar declination affect solar radiation at different latitudes?

It causes a decrease in solar radiation at higher latitudes Signup and view all the answers

How does the azimuth angle relate to the orientation of a solar panel?

Azimuth angle determines the direction a solar panel faces Signup and view all the answers

How does the altitude angle of the sun at solar noon compare at different latitudes?

It is highest at lower latitudes Signup and view all the answers

What is the astronomical unit (AU) used for in the solar system?

Measuring the average distance between Earth and the sun Signup and view all the answers

What is the estimated travel time for photons released in fusion reactions at the sun's core to reach the surface?

Thousands of years Signup and view all the answers

What is the speed at which solar radiation travels?

186,000 mi/sec Signup and view all the answers

How much energy from the sun hits the Earth every hour?

430 quintillion Joules Signup and view all the answers

What does solar insolation refer to?

The intensity of solar radiation reaching a given area Signup and view all the answers

What is the term for the angle between the sun and the local horizon?

Altitude angle Signup and view all the answers

Which angle defines the sun's position north or south of the equator?

Solar declination Signup and view all the answers

What causes the seasonal variation of solar declination?

Earth's tilt relative to its orbit around the sun Signup and view all the answers

In which phenomenon does the sun have its highest altitude and lowest daily path length for an observer at 0° latitude?

Summer solstice Signup and view all the answers

What is the name for the angle that defines the sun's compass direction in the sky?

Azimuth angle Signup and view all the answers

At what angle are the rays of the sun most intense for an observer at equator during the equinoxes?

$90^{\circ}$ Signup and view all the answers

Solar Radiation and Atmospheric Effects Quiz

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Questions and Answers

What is the term for the sun's apparent location in the sky east or west of true south?

Which angle defines the off-south position in the horizon?

What determines the height of the sun above the horizon?

When does the shortest solar day typically occur for places in the northern hemisphere?

During which phenomenon should the length of the day be theoretically equal to the length of the night?

What is the angle formed between the plane of the equator and a line drawn from the center of the sun to the center of the Earth called?

During which celestial event is the declination angle equal to 0?

What is the angle between the sun and the local horizon directly beneath the sun known as?

In terms of its reference, when is the azimuth angle positive?

What causes the seasonal variation of the solar declination angle?

What is the declination angle denoted by?

At what point is the Earth nearest the sun during its orbit?

What is the tilt equal to for the highest average insolation on a PV module?

Which of the following days marks the summer solstice?

What would be the variation in distance on July 4 from the aphelion point?

What is the typical unit for peak sun hours?

Which type of radiation reaches the earth surface directly from the sun?

What represents the sum of direct and diffuse radiation in solar radiation components?

If the Air Mass is 1.5, what are the values of h1 and h2?

What is the term used to describe the sun's height above the horizon?

What is the relationship between solar declination, latitude, and zenith angle?

How does the altitude angle of the sun change throughout the day at a specific location?

How does the seasonal variation of solar declination affect solar radiation at different latitudes?

How does the azimuth angle relate to the orientation of a solar panel?

How does the altitude angle of the sun at solar noon compare at different latitudes?

What is the astronomical unit (AU) used for in the solar system?

What is the estimated travel time for photons released in fusion reactions at the sun's core to reach the surface?

What is the speed at which solar radiation travels?

How much energy from the sun hits the Earth every hour?

What does solar insolation refer to?

What is the term for the angle between the sun and the local horizon?

Which angle defines the sun's position north or south of the equator?

What causes the seasonal variation of solar declination?

In which phenomenon does the sun have its highest altitude and lowest daily path length for an observer at 0° latitude?

What is the name for the angle that defines the sun's compass direction in the sky?

At what angle are the rays of the sun most intense for an observer at equator during the equinoxes?

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