1. Our
Solar
System
©Mark Place,

2. The total mass of all the asteroids is less than that of the Moon.
rocky objects with round or irregular shapes
lie in a belt between Mars and Jupiter
The total mass of all the asteroids
is less than that of the Moon.

4. only visible when
they are close to
the sun

5. Comet orbit (notice tail)
Famous comets

6. shooting stars
Meteor showers (link)

7. Meteorites Meteoroids (in space) that STRIKE the ground = MeteoriTes!!
3 main types:
1 – Stony - Si, Al = “crust”
2 – Metallic - Fe, Ni = “core”
3 – Carbonaceous chondrites – C = “life”

8. Apophis
Nasa

9. The Planets

10. Terrestrial vs. Jovian
Terrestrial planets are the inner, earth-like planets
Jovian planets are the outer, Jupiter-like planets

11. Draw a line across the table between
the terrestrial and Jovian planets and label.

13. Which are more dense?
Jovian or terrestrial

14. Which have more moons ?
Jovian or terrestrial

15. Which have longer periods of revolution?
Jovian or terrestrial

16. Which are larger in size on average ?
Jovian or terrestrial

17. Which planet has the longest day?
Venus

18. Which planet has the longest year?
Neptune

19. Pg. 7

20. How are the orbits of the planets described?
slightly, eccentric ellipse -
Kepler's 1st Law
eccentricity website

21. More eccentric Which planet has the least Mercury
perfectly circular orbit?
More eccentric
Mercury

22. Least eccentric Venus Which planet has the most
perfectly circular orbit?
Least eccentric
Venus

23. Calculate the eccentricity
of the ellipse below:
length of major axis
Formula:
eccentricity = distance between foci (d)
length of major axis (L)

24. d = 1.7 cm _________ L = 6.5 cm e = 0.262 Eccentricity e = d L
-Round to nearest thousandth
-NO labels

25. When does a planet move
fastest in its orbit?
When closest
to Sun
When does a planet move
slowest in its orbit?
When furthest
from Sun

27. Area A = Area B Equal areas
Kepler's Second Law
Area A =
Area B
Equal areas
eccentricity website
Website 2

28. Explain the difference between the geo- and helio-centric
models of the solar system.
Helio-centric
Geo-centric
Earth-
centered
Sun-
centered