Science vocab solar system
Across
- 1. rocky worlds revolving around the sun that are too small to be called planets.
- 5. huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. Aside from our sun, the dots of light we see in the sky are all light-years from Earth.
- 8. a celestial body moving in an elliptical orbit around a star.
- 9. (of a celestial object or spacecraft) move in orbit around (a star or planet).
- 13. move or cause to move in a circle around an axis or center.
- 14. the gravitational curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
- 15. a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
Down
- 2. the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly. Of the objects that orbit the Sun directly, the largest are the eight planets, with the remainder being smaller objects, the dwarf planets and small Solar System bodies.
- 3. of a surface or body) throw back (heat, light, or sound) without absorbing it.
- 4. a large planet composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core.
- 6. the sun's rays hit the Earth a lot of the heat is reflected back into space"
- 7. he star around which the earth orbits.
- 10. move in a circular orbit around.
- 11. an invisible force that pulls objects toward each other.
- 12. the envelope of gases surrounding the earth or another planet.