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