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 (a)  

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

• Photosphere

• Core

• Radiative zone

• Convective zone

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 (a)   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 (a)   zone

The surface of the Sun is called the __________

• Photosphere

• Chromosphere

• Corona

• Sunscape