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Ch. 20 Solar System
Formation of the Solar System
| Question | Answer |
|---|---|
| Planetary Orbits are shaped like what? | ellipses |
| This ordinary term is correctly defined as 'what is the average kinetic energy of particles in an object?' | temperature |
| These imperfections on the sun's surface, discovered by Galileo are called what? | Sunspots |
| Light takes how long to travel from the sun to Earth? | 8.3 light minutes |
| Only visible during a solar eclipse is what layer. | corona |
| The visible layer of the sun? | Photosphere |
| To find a planet's 'period of revolution' you must know it's? | orbit |
| Which of Kepler's laws gets credit for 'gravitational assist?' | Kepler's 2nd Law |
| How long does a sunspot cycle usually take? | 11 years |
| Path of a body around another body is called a what? | orbit |
| Giant eruptions on the Sun's surface are what? | Solar Flares |
| The resistance of an objects speed or direction until acted upon by another body is call what? | inertia |
| Where does nuclear fusion occur? | Core of the sun. |
| A nebula collapses because of what force? | Gravity |
| Very thick, dense and light takes up to a million years to escape. | Radiative Zone |
| This layer can only be seen during a total solar eclipse, what is it? | chromosphere |
| Hot gasses rise, cool down, heat up and rise, cool down and sink, this occurs in what layer of the sun? | Convective Zone |
| After the nebula collapses, and the center gets hotter, pressure increases and forces begin working, what is formed? | Sun |
| The outer atmosphere of the sun is called what? | chromosphere |
| Planets which are very large and formed of gas, with possible solid cores are what type of planet? | Outer Planet |
| One complete trip of a body around another body is called what? | revolution or period of revolution |
| Spin of a body on it's axis is called a what? | rotation |
| Planets which are small, solid and rocky are called what kind of planet? | Inner Planet |
| Two key ideas explain why Earth has seasons, what are they? | Tilt and Revolution |
| What name is given to small molten rock bodies that develop at the beginning of a star system? | Planetesimals |
| The nebula's balance between gravity and inner pressure ends with the nebula collapsing and spinning which direction? | counter clockwise |
| As temperature increases so does what? | pressure |
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Christine160