1. Review Session
Chapter 1 – Planet Earth

2. Size and shape of the earth

3. Evidence of Earth’s shape…
Ships appear to sink as they go over the horizon.

4. Evidence of Earth’s shape…
2. Earth's shadow on the moon during an eclipse is always curved.

5. Evidence of Earth’s shape…
3. Different time zones.

6. Evidence of Earth’s shape…
4. Similarities in gravity at sea level all over Earth.

7. Evidence of Earth’s shape…
5. Different angles to Polaris as you travel N. or S.
The altitude of Polaris is equal to your latitude on Earth.

8. Evidence of Earth’s shape…
6. Photos from space - best proof.

9. What is Earth’s true shape?
Which means?
What is Earth’s true shape?
Earth’s true shape is a slightly oblate spheroid.
Flattened at the polar regions.
Bulging at the equatorial regions.
Caused by Earth’s rotation (spinning on its axis).

10. ESRT pages

11. Composition of the Atmosphere:

12. Layers of the atmosphere:
Turn to page 14 of the ESRT

13. Latitude and longitude

14. Cardinal Directions

15. Let’s get more specific….

16. Topography

17. Topographic Maps
350m
300m
250m
200m
150m
100m
50m

18. Each color change represents a 50 meter increase.

19. Drawing a Topographic Profile!B
1200m F
1000m A
800m
400m
600m