Across
- 3. the path an object follows as it moves around another one
- 6. An ancient model of the solar system which we know today is not correct. It puts earth at the center of the solar system and says that everything orbits around the earth.
- 9. A tool that provides evidence that the earth is rotating. It is made of a heavy weight hanging from a long wire which swings back and forth.
- 10. An ancient tool used to tell time during the day. Part of it casts a shadow onto a flat surface marked in hours. It works due to Earth’s rotation.
Down
- 1. A model of the solar system which puts the Sun at the center and says that the planets orbit around the sun.
- 2. A group of stars that form a recognizable shape
- 4. The apparent shift of position of some stars through the year.
- 5. The action of the earth turning or spinning around its center.
- 7. Our solar system is made up of the sun, 8 planets and their moons. The planets all orbit around the sun and moons orbit around a planet.
- 8. A year with one additional day added