| Term | Definition |
|---|
| astronomy | the study of space |
| a day | period of one rotation round it's axis |
| a year | period of one orbit around the sun |
| satellite | an object orbiting a larger object |
| gravity | the force holding objects in their orbit |
| constellation | a group of stars with a pattern |
| south pole | the nightsky point which stars seem to turn about |
| full moon | lit-up side of the moon is facing Earth |
| new moon | dark side of the moon is facing Earth |
| lunar eclipse | when Earth's shadow covers the moon |
| solar eclipse | when moon's shadow stops us seeing Sun |
| equinoxes | 2 days occuring halfway between longest and shortest days |
| seasons | caused by Earth's axis tilting to or from Sun |
| gas giants | the four massive planets with huge gravity |
Combine with other sets
Share on Facebook
Share on MySpace
!