Planets and Other Objects in Space

Lesson 1- D6-67
Objectives
1. Find out how the Earth and moon move.
2. Find out what causes seasons.
 Solar System Trading Cards
 Astronomy Picture of the Day
 Earth and Moon Viewer
 Amazing Space Interactive
 Solar System Jigsaw & Games
 Best Dressed Astronaut
 Solar System Story - Interactive
 Launch the Shuttle - Story 
 Cosmic Trivia Quiz Game 
 Nasa Kids Club 
 Constellations 
 Moon Phases 
 Nasa Space Place 
 Planet links- interactive 

Vocabulary

1. satellite - an object that moves around another object in space.
2. orbit - a path that one object takes around another object.
3. phases - one of the different shapes the moon seems to have as it orbits the earth.
4. revolution - the movement of any object in an orbit, such as Earth moving around the sun.
5. axis - an imaginary line which  runs through both poles of a planet.
6. rotation - the motion of a planet or other object as it turns on its axis.

Study Guide
(Practice With Active Board)

1. A _________________  is an object that moves around another object in space.

2. The moon moves around Earth in a certain path or ___________________.

3. It takes a little more than __________ days for the moon to complete its orbit.

4. The moon looks as large as the sun because it is much _________________ to Earth.

5. The moon seems to have different shapes, or _______________________.

6. The moon's appearance changes during a month because as the moon moves __________________ Earth, different amounts of its lighted side are visible.

7. During the first half of the moon's cycle (days 1 to 14) the amunt of the lit side of the moon seen from Earth ________________ , or increases.

8. During the last half of the moon's cycle (days 15 to 28) the amunt of the lit side of the moon seen from Earth ______________________ or decreases. Then the cycle begins again.

9. The movement of Earth around the sun is called its ____________________.

10. It takes Earth one year (_______________) days to complete a revolution.

11. The imaginary line, or __________________ , runs through the center of Earth from the North Pole to the South Pole.

12. It takes ________ hours or one day, for Earth to complete one rotation on its axis.  This causes day and night.

13. The two motions of Earth are _____________________________________

_______________________________________________________________

14. What causes the seasons?
 

15. Winter occurs in the ____________________ Hemisphere when Earth's axis is tilted away from the sun.

16. Why would you classify the moon and Earth as satellites?
 

17. What season would a town in the southern Hemisphere have during January?

18. Name the phases of the moon:
 

Answers
1. satellite
2. orbit
3. 28 days
4. closer
5. phases
6. around
7. waxes
8. wanes
9. revolution
10. 365 days
11. axis
12. 24 hours
13. Earth revolves around the sun and rotates on its axis.
14. Due to the tilt of Earth's axis and its movement around the sun, different  places on Earth receive different amounts of direct sunlight which causes a difference in the length of days and nights.
15. Northern Hemisphere
16. Both orbit an object in space.
17. Summer
18.     1. Waxing Crescent
         2. First Quarter
         3. Waxing Gibous
        4. Full Moon
        5. Waning Gibbous
        6. Last Quarter
        7. Waning Crescent
        8 New Moon