NATSCI 1 - PREFINAL QUIZ NO. 2

1. What is the Sun?

• A. A planet

• B. A moon

• C. A star

• D. A comet

2. What elements make up most of the Sun’s mass?

• A. Hydrogen and oxygen

• B. Hydrogen and helium

• C. Helium and carbon

• D. Nitrogen and hydrogen

3. What process occurs in the Sun’s core?

• A. Combustion

• B. Photosynthesis

• C. Nuclear fusion

• D. Evaporation

4. What temperature is the Sun’s core approximately?

• A. 1 million °C

• B. 5 million °C

• C. 10 million °C

• D. 15 million °C

5. What results when hydrogen nuclei fuse in the Sun’s core?

• A. Helium nucleus

• B. Carbon nucleus

• C. Oxygen nucleus

• D. Hydrogen atom

6. The Sun’s visible surface is called the:

• A. Chromosphere

• B. Corona

• C. Photosphere

• D. Lithosphere

7. Which Sun layer can be seen during a solar eclipse?

• A. Chromosphere

• B. Photosphere

• C. Core

• D. Radiation zone

8. What color does hydrogen gas turn the chromosphere?

• A. Blue

• B. Bright red

• C. Yellow

• D. White

9. What is the Sun’s outermost layer called?

• A. Corona

• B. Chromosphere

• C. Photosphere

• D. Mantle

10. What are cooler, dark areas on the Sun’s surface called?

• A. Prominences

• B. Sunspots

• C. Solar flares

• D. Corona