1. Planets

2. Planets

3. Planet Groups N The Outer Planets The Inner Planets Mercury Venus
Planets far from the Sun
Jupiter
Saturn
Uranus
Neptune
The Inner Planets
Planets closest to the Sun
Mercury
Venus
Earth
Mars
Pluto???

4. Mercury N Planet closest to the Sun Smallest Terrestrial Planet
Has no moons of its own
Has extreme temperatures because
1) ____________________________
2) ________________________

5. Venus N
Can be seen in the west just after sunset or in the morning sometimes.
Is also called the “evening or morning star” even though it is not a star.
Similar to Earth in size and mass and is called the Earth’s twin
Has the hottest surface of all the planets because of the greenhouse effect

6. Earth’s Motion through space
ROTATION
The Earth spinning around its axis
Takes 1 day (24 hrs)
Causes days and nights
REVOLUTION
The Earth moving around the Sun
Takes 1 yr (365 days)
Causes seasons

7. Earth’s Motion through space
What causes the seasons?
The tilt of the Earth causes seasons.

8. Which of the following diagrams shows the correct seasonal orientation of the Earth as it rotates around the Sun?

9. Phases of the moon N New moon None of the moon is visible
Crescent Moon
Less than half of the Earth facing side of the moon is visible
Quarter Moon
Exactly half of the Earth-facing side of the moon is visible
Gibbous Moon
More than half of the Earth-facing side of the moon is visible
Full Moon
The entire Earth facing side of the moon is visible.
High tides occur during Full Moons

10. Waxing & Waning N
If the part of the moon that we see from the Earth is INCREASING, we say the moon is WAXING.
If the part of the moon that we see from the Earth is DECREASING, we say the moon is WANING.

11. Mars N Called the “Red planet” due to the iron rich rock (Rusty)
Mars is quite cold due to
1) Its thin atmosphere
2) Its distance from the Sun

12. Outer Planets – The gas giants
All the gas giants have thick atmospheres
Outer layers of the gas giants are extremely cold due to the distance from the Sun
All the gas giants have moons
They also have RINGS – thin disks of small particles of ice and rock.

13. Jupiter and Saturn N Jupiter The largest and most massive planet
Has 4 moons
Saturn
The 2nd largest planet
Has the most spectacular rings around it

14. Uranus , Neptune & Pluto N Uranus
Looks blue-green in color because of the methane in the atmosphere
Neptune
Is a cold, blue planet
Its atmosphere contains visible clouds.
Pluto – A Dwarf Planet
Because it has not cleared out the neighborhood around its orbit.
Has a solid surface
Is smaller & denser than the outer planets

15. Answer these questions
1) Which planets make up the inner planets?
2) Which planets make up the outer planets?
3) Name 4 characteristics of the outer planets?
4) Give two differences between rotation and revolution.
5) Name the different phases of the moon and write a sentence on each.
6) What is the order of planets?
7) Come up with an acronym for YOU to remember the order of the planets.