Earth-Sun-Moon System

4. Only ______ of the Moon is illuminated by the Sun.
6. When it's summer in Ireland it is ______ in Australia.
7. The change from winter to summer is called ______.
9. Tilting towards the Sun means that the sunlight in the summer is more ______ than it is during the winter.
12. For half the lunar cycle, the illuminated area of the Moon visible on Earth is increasing; the Moon is said to be ______ .
13. The change from summer to winter is called ______.
14. The Earth has seasons because its axis is ______ .

1. A ______ Moon is the first phase in the lunar cycle and cannot be seen because we are looking at the unlit half of the Moon.
2. A ______ eclipse occurs when the Earth blocks out the light of the Sun.
3. The side of the Earth illuminated by the Sun is in ______, while the side of the Earth the sunlight doesn't reach is in nighttime.
5. A ______ occurs when the Moon looks like it is entirely illuminated.
7. A ______ eclipse occurs when the Moon blocks out the light of the Sun.
8. During the other half of the lunar cycle, the illuminated area of the Moon visible on Earth is decreasing; the Moon is said to be ______ .
10. During our summer, the Earth is positioned such that the northern hemisphere is tilted ______ the Sun.
11. The portion of illuminated Moon you are able to see changes, these changes are called ______ of the Moon.