What is an axis?

What is a day and how long is it?

What is revolution?

What is a year and how long is it?

What is the tilt of the Earth's Axis?

How does the angle of the sun's rays make the temperature more intense?

What season has the longest day?

What season has the shortest day?

What seasons have equal hours of day and night?

Why can we see the moon at night even though it does not produce its own light?

What is a moon phase?

What is a month?

What is the difference between waxing & waning?

What are the different moon phases?

What is an eclipse?

What is an umbra?

What is a penumbra?

What is a lunar eclipse?

What is a solar eclipse?

How many low and high tides happen each day?

What is a neap tide?

What is a spring tide?

What causes tides?