A) Fossil Fuels B) The Moon C) The Sun D) Wind
A) Gravity B) Chemical Reaction C) Nuclear Fusion D) Nuclear Fission
A) Corona B) Chromosphere C) Convection Zone D) Photosphere
A) Lunar Cycle B) Seasonal Cycle C) Solar Cycle D) Decadal Cycle
A) About 1 week B) About 2 hours C) About 1 day D) About 8 minutes
A) Oxygen and Carbon B) Nitrogen and Sulfur C) Hydrogen and Helium D) Iron and Nickel
A) Chromosphere B) Corona C) Photosphere D) Convective Zone
A) Mars B) Venus C) Mercury D) Jupiter
A) Meteoroids B) Solar Flares C) Comets D) Asteroids |