Solar System Skill Builder
| # | Answer |
|---|---|
| 1 | The Sun. |
| 2 | A solar system. |
| 3 | Mercury. |
| 4 | Mars. |
| 5 | The Sun. |
| 6 | Mercury, Venus, Earth, Mars. |
| 7 | A planet orbits a star, while a moon orbits a planet. |
| 8 | Earth has seasons because its axis is tilted as it orbits the Sun. |
| 9 | Jupiter. |
| 10 | Jupiter, Saturn, Uranus, and Neptune. |
| 11 | Gravity. |
| 12 | Because Venus is similar to Earth in size and composition. |
| 13 | A small rocky object that orbits the Sun, mostly found in the asteroid belt. |
| 14 | A region between Mars and Jupiter where many asteroids orbit the Sun. |
| 15 | A comet is made mostly of ice, dust, and rock, and it can form a tail near the Sun; an asteroid is mostly rocky or metallic. |
| 16 | Its orbit. |
| 17 | Because they travel a shorter path and move faster in their orbits due to the Sun’s gravity. |
| 18 | Mercury is small and has weak gravity, so it cannot hold onto many gases. |
| 19 | Mars is of interest because it has evidence of past water and may have conditions that could have supported life. |
| 20 | Its large, visible ring system. |
| 21 | The inner planets are smaller and rocky, while the outer planets are larger and mostly made of gas and ice. |
| 22 | The outer planets are farther from the Sun, so they receive less sunlight and heat. |
| 23 | The Moon is not a planet because planets orbit stars, while moons orbit planets. |
| 24 | A change in Earth’s tilt would change the severity and length of seasons, making them more or less extreme. |
| 25 | Earth is in the habitable zone, has liquid water, a suitable atmosphere, and moderate temperatures. Mercury is too hot and airless, while Neptune is far too cold and is a gas giant with no solid surface like Earth’s. |