The diagram below shows the tilt of the Earth on its axis. What is the season in the Northern Hemisphere in this picture?  

Which type of eclipse occurs when the Sun is completely obscured the by moon? The Sun is replaced by only a dark silhouette of the Moon. The Corona of the sun is still visible, but only faintly.

How do the vibrations of the sound source compare for louder vs. softer sounds?  

How do the vibrations of the sound source compare for louder vs. softer sounds?  

Why don’t lunar eclipses happen twice a month?

The Moon goes through all its phases in about ___________.

In order for the object to continue moving, a constant force needed to be applied. For example: the guitar sting only moved when it is plucked, as soon as the finger is no longer touching it, the motion stops.

What causes the moon to change shape?

A scientific model must have which three elements?

What causes the number of hours of daylight a place receives to change over the course of a year?