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Astronomy Quiz - Our Sun
1. Our sun is a:
A star
B planet
C moon
2. The sun is composed of the gases hydrogen and:
A oxygen
B helium
C methane
3. The main colour of our sun is:
A red
B yellow
C blue
4. The distance between the earth and the sun is about:
A 150 million kilometres
B 90 million kilometres
C 1 light year
5. The sun rotates every:
A day
B year
C 30 days
6. The core of the sun has a temperature of approximately:
A 16 million degrees
B 5 million degrees
C 6000 degrees
7. The coloured part of the sun is the:
A core
B photosphere
C chromosphere
8. What name is given to the cooler darker spots on the sun's surface?
A solar flares
B sunspots
C auroras
9. The cycle of sunspot activity is about:
A1 year
B11 years
C20 years
10. Loop-like arched shapes of gases on the sun's surface are solar:
Aprominences
Bflares
Csystems
11. The sun's energy comes from nuclear:
Aradioactivity
Bfusion
Cfission
12. In nuclear fusion, two smaller hydrogen nuclei join to form one larger:
Aoxygen nucleus
Bstar
Chelium nucleus
13. The estimated age of the sun is:
A4.5 billion years
B50 million years
C4.5 million years
14. The sun is thought to be:
Aat the beginning of its life cycle
Bat the end of its life cycle
Chalf-way through its life cycle
15. The nearest star to earth apart from the sun is:
AAlpha Crucis
BAlpha Centauri
CSouthern Cross

 

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