1. EARTH'S ROTATION AND REVOLUTION

2. Earth’s Rotation Rotation is the spinning of the Earth on its axis.
The time for one rotation is 24 hours.
The speed of rotation 24,855 miles/24 hr or 1,038 miles/hr
Click image to view Earth’s rotation.

3. Earth’s Revolution
A revolution occurs as the earth moves around the sun.
Time for one revolution = 365 1/4 days = 8,766 hours
The speed of earth’s revolution is about 18 miles per second.

4. Earth’s Revolution

5. The Earth’s Tilt
The Earth has 4 seasons. Summer, Spring, Autumn, and Winter.
These seasons are caused by Earth’s
Tilt

6. The Earth’s axis is the imaginary line around which the Earth spins (rotates) causing the Earth to tilt toward and away from the sun during different times of the year.

7. The seasons depend on which side of Earth is tilted toward the sun.
When the Northern Hemisphere is tilted toward the sun it is summer in the north and winter in the south and vice versa.

8. Summer Solstice for Northern Hemisphere
Winter Solstice for Southern Hemisphere

9. Equinoxes
During the Equinoxes the Earth is neither pointing toward or away from the Sun.
During the Spring and Fall equinox the length of day versus night is equal.

10. Solstices The solstices are the longest and shortest days of the year.
The Summer Solstice is the longest and the winter solstice is the shortest.

11. Northern Hemisphere
During the Summer Solstice, the Earth is tilted as far toward the Sun as possible.
During the Winter Solstice, the Earth is tilted as far away from the Sun as possible.

12. Earth’s Orbit
The path an object takes as it revolves around another object.

13. Around and Around We Go
Every second, that you sit in this classroom, the Earth's orbital motion carries you about 18 miles through space.

14. SPACE
EARTH
MOVEMENTS

15. Round One 1. The Earth spinning on its axis.
Rotation
Revolution
2. Going around a larger body.
Rotation
Revolution
Revolution
3. 24 hours.
Round One
Rotation
Revolution
4. Causes the Earth’s seasons.
Rotation
Revolution
5. Creates a year.
Rotation
Revolution
6. The moon going around Earth.
Rotation
Revolution

16. Identify the motion being shown in each of these pictures
Identify the motion being shown in each of these pictures. Each team must write their answers for each figure in the form of a question.
Figure #1
Rotation
Revolution
Planet
Round Two
Figure #2
Earth
Rotation
Revolution

17. Earth Science TEST ONE REVIEW (study power point)
Tell the story of the solar system’s formation
Inner and outer planets – composition + reason for composition
Comparing Asteroids / Comets / Meteoroid -> meteor -> meteorite
Calculating AU for a given planet’s distance in km (or vice versa!)
Star Life Cycle diagram + vocab
Moon facts
Moon phases – predicting and naming
Draw Eclipse diagrams (lunar and solar)
Tides
Rotation / Revolution (it may help if you know the reasons for the seasons)