Across
- 3. a 4.5 billion-year-old yellow dwarf star
- 6. the angle a planet's rotation axis makes with the plane of its orbit
- 9. the planet on which we live; the world
- 11. the time taken by the earth to make one revolution around the sun
- 13. sunlight in which the path of light from the sun to an object is a straight line
- 15. the period of lightness in each twenty-four hours
- 16. each of the twelve named periods into which a year is divided
- 18. the southern end of the axis of rotation
- 19. a view or opinion that is incorrect because based on faulty thinking or understanding
Down
- 1. an object's spinning motion about its own axis
- 2. an imaginary line that goes through the North and South Poles
- 4. the half of the earth that lies north of the equator
- 5. the part of the earth that lies south of the equator
- 7. the period of darkness in each twenty-four hours
- 8. an imaginary line drawn around the earth that make the NH and SH
- 10. the intensity of heat present in an object
- 12. The motion of an object around a point, especially around another object or a center of mass
- 14. when something in the path of light from the sun filters the sunlight before it hits the object
- 17. the northern end of the axis of rotation
- 20. the curved path of an object around a star, planet, or moon
