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