GCSE Astronomy Topic 10 Solar Astronomy

One way to observe the Sun safely is to set up a telescope so the Sun's image falls on a sheet of card.

This is called telescopic __________

If you look directly at the unfiltered Sun, you could damage your....

• retina

• cornea

• iris

• sclera

How does a H-alpha solar filter work?

• It only allows a tiny part of the visible light spectrum to pass through

• It decreases the intensity of all light

• It block a tiny part of the visible light spectrum

• It blocks all visible light and only allows ultraviolet light to pass through

Give 2 disadvantages of a pin-hole camera for observing the Sun.

• The image is small

• The image is inverted

• The image is unfocused

• The image is monochrome (black and white)

Reorder the following from the Sun's centre outwards

• Radiative zone

• Convective zone

• Core

• Photosphere

What is the approximate temperature of the Sun's core?

• 15,000,000 kelvin

• 2,000,000 kelvin

• 5,800 kelvin

• 100,000,000 kelvin

The Sun's radiative zone is where _______ of light bounce around, taking about a million years to travel outwards through it.

What is the temperature drop in the Sun's radiative zone?

• 7 million to 2 million kelvin

• 15 million to 7 million kelvin

• 2 million to 5800 kelvin

• 100 million to 15 million kelvin

The zone above the radiative zone where hotter plasma rises and cooler plasma falls is called the __________ zone

The surface of the Sun is called the __________

• Photosphere

• Chromosphere

• Corona

• Sunscape