1. Unit 3 Vocab

2. astronomer
a person whose job it is to study space

3. axis
the imaginary line that goes through the Earth from pole to pole

4. constellation
a pattern of stars in the night sky

5. hemisphere
half of the Earth

6. lunar
anything having to do with the moon

7. the path a planet follows when revolving around the sun
orbit
the path a planet follows when revolving around the sun

8. phases
the changes in appearance of the moon’s shape as seen from Earth

9. probes
vehicles that move through space without any person driving them, and are controlled by computers on Earth

10. quarter
a phase of the moon representing half the moon as being lit

11. spinning of the Earth that results in days and nights
rotate
spinning of the Earth that results in days and nights

12. revolve
the orbit around the sun that brings about changes in the seasons

13. an object that revolves around another larger object in space
satellite
an object that revolves around another larger object in space

14. seasons
one of the four natural divisions of the year characterized by temperature and weather....caused by the revolution of the Earth

15. solar
anything having to do with the sun

16. telescope
a tool that uses lenses to make faraway objects appear closer

17. period during which the moon appears to be reflecting MORE light; begins at New Moon and goes until the moon reaches Full Moon

18. waning
period during which the moon appears to be reflecting LESS light; begins after Full Moon and goes until the moon reaches New Moon