Topic 5/6: Energy and Insolation

Front

What is insolation?

Back

Insolation refers to the amount of solar radiation received by a given area over a specific time period.

Front

How does the angle of the Sun affect insolation?

Back

The angle of the Sun affects insolation because a higher angle (closer to 90 degrees) results in more concentrated solar energy, while a lower angle spreads the energy over a larger area.

Front

What is the significance of latitude in relation to insolation?

Back

Latitude affects insolation because locations closer to the equator receive more direct sunlight throughout the year, while higher latitudes receive sunlight at a more oblique angle, reducing intensity.

Front

What is the Earth's axial tilt?

Back

The Earth's axis is tilted at an angle of approximately 23.5 degrees.

Front

How does the Earth's axial tilt influence seasons?

Back

The tilt of the Earth's axis causes different parts of the Earth to receive varying amounts of sunlight throughout the year, leading to the changing seasons.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the process by which greenhouse gases trap heat in the Earth's atmosphere, preventing it from escaping into space.

Front

Which latitude receives the most insolation during the summer solstice?

Back

The latitude that receives the most insolation during the summer solstice is 23.5 °N (Tropic of Cancer).

Front

What happens to solar radiation as it passes through the atmosphere?

Back

As solar radiation passes through the atmosphere, some of it is absorbed, scattered, or reflected, reducing the amount that reaches the Earth's surface.

Front

Why do higher latitudes experience colder temperatures?

Back

Higher latitudes experience colder temperatures due to the lower intensity of insolation caused by the curvature of the Earth, which spreads solar energy over a larger area.

Front

What is the relationship between altitude and insolation?

Back

Generally, as altitude increases, insolation increases because the atmosphere is thinner, allowing more solar radiation to reach the surface.