Question | Answer |
What two types of planets are there? | There are two types of planets in our solar system |
What two tpes of planets are there in our solar sysrem? | Small, rocky, high density inner planets all inside the asteroid belt (Terrestrial or inner planets). Large, gaseous, low density outer planets that are outside the asteroid belt (Jovian or outer planets). |
What are astroids? | 2. Asteroids are pieces of a broken planet and are found in the Asteroid Belt which is between Mars and Jupiter. |
What is the order of the planets from the sun? | 1. Mercury, 2. Venus, 3. Earth, 4. Mars, 5. Jupiter, 6. Saturn, 7. Uranus, 8. Neptune. |
What similar characteristics do inner planets have? | 4. Inner planets are similar in: composition: iron and nickel cores, mantles and crust. Mercury has a very large core ) and thinner mantle and little or no crust |
What two planets have no moon? | 6. No moons for Mercury and Venus |
Where were there evidence of volcanic activity? | Evidence of past volcanic and earthquake activity on Mercury, Earth, Mars and probably on Venus. |
Why does Mars and Earth show evidence of tilt? | 8. Mars and Earth show evidence of tilt because of seasons |
Why does Mars have a redish tint? | 9. Mars’ soil has high iron content |
What did dry lakes and reiver beds show evidence of on Mars? | Water |
What characteristics do outter planets share? | size: very large. Atmospheres: high in hydrogen and helium with Uranus and Neptune have some methane giving them a bluish tint. Many moons (more than 10). Rings. Fast periods of rotation Long periods of revolution (12 years or more) |