A) 8 minutes and 20 seconds B) 1 hour C) 30 minutes D) 1 day
A) Chemical reaction B) Photosynthesis C) Nuclear fusion D) Nuclear fission
A) Mercury B) Earth C) Mars D) Venus
A) Greenhouse effect B) Solar eclipse C) Light pollution D) Global warming
A) Chromosphere B) Sunspots C) Corona D) Photosphere
A) Mayans B) Ancient Greeks C) Ancient Egyptians D) Vikings
A) Oxygen and Carbon B) Hydrogen and Helium C) Nitrogen and Sulfur D) Iron and Nickel
A) Solar zenith B) Celestial equator C) Solar axis D) Sun's meridian
A) Solar eclipses B) Sunspots C) UFO spots D) Satellite spots |