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Ultimate ES Stack 3
Solar System
| Question | Answer |
|---|---|
| Belongs to the Milky-way Galaxy. It includes the Sun, and the planets and space debris that are held by the Sun’s gravity | Solar System |
| Using the Radiometric Dating, we can calculate the age of the solar system at about | 4.56 billion years. |
| (earthlike), inner planets: Mercury, Venus, Earth, Mars | Terrestrial / Inner planet |
| (Jupiter-like), Gas Giants, Outer Planets planets: Jupiter, Saturn, Uranus, Neptune | Jovian / Outer Planet |
| Planets revolve around | The sun |
| Planets rotate | within their axis |
| Planets Revolve | around the sun |
| Planets Revolve around the sun in imaginary lines known as | orbits. |
| these planets have orbits near the sun | Inferior Planets |
| these planets have their orbits around the sun which lie beyond that of Earth | Superior Planets |
| -the motion of the planets were explained scientifically and mathematically by 2 well-known scientists: | Johannes Kepler and Isaac Newton |
| orbits of the planets are elliptical and the Sun which it at the center is the focus of the ellipse | Law of Orbits |
| The planets move in different rates. They move faster when near the Sun and slower when further away | Law of Area |
| the relationship of orbital periods to orbital size where the solar distances can be calculated | Law of Periods |
| counterclockwise when viewed from above the Earth's North Pole. | Prograde |
| clockwise when viewed from above the Earth's North Pole. | Retrograde |
| Objects executing motion around a point possess a quantity called | angular momentum. |
| sometimes called minor planets, are small rocky worlds which orbit the sun in a belt between the orbits of Mars and Jupiter. They are irregular in shape and have craters. | Asteroids |
| Have icy nucleus, which evaporates and gets blown into space by solar wind pressure. | Comets |
| Small dust grains throughout the solar system | Meteoroids |
| Where do you think is the mass of the Solar System concentrated? | At the center (SUN) |
| How will you describe the shape of the orbit of the planets? | * Orbits are elliptical. |
| Where do planets revolve around? How do they move, clockwise or counter clockwise? | • Planets revolve around the SUN and are on the same plane. • Most planets rotate prograde. |
| Do all planets revolve at the same rate? rotate at the same rate? | No. Innermost planets revolve faster. • Innermost planets rotate slower. |
| 5. What’s the difference between prograde and retrograde? | Prograde - counterclockwise when viewed from above the Earth's North Pole. Retrograde - clockwise when viewed from above the Earth's North Pole. |