In the Northern Hemisphere, why are summers warmer than winters, even though the Earth is actually close to the sun in January?
The sun is a star. All stars eventually burn up and die.
What keeps the sun shining brightly year after year instead of it just burning up all its energy and dying?
How long has the sun been in existence?
How would you suggest that the scientific method proved that plate tectonics are a reality?
How does the ocean floor move? Does this apply to land as well?